matplotlib-users Mailing List for matplotlib (Page 2)

Hello,
I appologize for a slightly off topic post, but I'm sure someone here
knows the answer. I like the idea of developing code interactively
with IPython, but I cannot get past one hurdle. I would like to write
my code in a module that I then import and instantiate classes or call
functions from interactively. However, when I try to do this in
IPython I find that after I import my code, it is cached and even
after restarting and reimporting, the changes are not recognized. What
is the paradigm people use to get around this, or what is the
preferred paradigm for interactive development using IPython.
Thanks,
Glenn

Hi Stephen,
On Mon, Apr 28, 2008 at 1:57 PM, Stephen George
<ste...@op...> wrote:
> Hi Sunzen,
>
> I also get similar results as you. - always have
Thank you for your trying.
>
> 'extremely zoomed' means I pick a corner of your staircase, and zoom in
> on the corner multiple times, each time no bigger than the cross hairs
> of the cursor.
>
> If I don't get the blocked out triangles I get the data changing direction
>
> i.e. if looking at
>
> |
> ---
>
> I might see
> --- or |__ or __|
> |
Good description!
>
> I've seen similar results with other graphic toolset (not python based)
>
Oh. What kind of other graphic toolset?
> I feel it something to do with zooming in beyond the resolution of the
> underlying system (no evidence of this)
>
I have no idea of it. Could some masters say something about it?
-- 
sunzen
<<freedom & enjoyment>>

yes it does! -lz now shows up and the pstest runs fine. Any idea what is 
failing wrt pkgconfig?
thanks,
Johann
John Hunter wrote:
> On Mon, Apr 28, 2008 at 3:55 PM, Johann Cohen-Tanugi
> <co...@sl...> wrote:
> 
>> Hi Michael,
>>
>> ok, here it is attached. For completion, from the matplotlib directory, I
>> issued :
>> [cohen@jarrett matplotlib]$ \rm -rf build
>> [cohen@jarrett matplotlib]$ python setup.py build > build.log
>> The following was printed out to the screen and not redirected :
>> src/backend_agg.cpp: In member function 'Py::Object
>> RendererAgg::write_rgba(const Py::Tuple&)':
>> src/backend_agg.cpp:1303: warning: ignoring return value of 'size_t
>> fwrite(const void*, size_t, size_t, FILE*)', declared with attribute
>> warn_unused_result
>> src/backend_agg.cpp:1308: warning: ignoring return value of 'size_t
>> fwrite(const void*, size_t, size_t, FILE*)', declared with attribute
>> warn_unused_result
>> lib/enthought/traits/ctraits.c: In function '_trait_cast':
>> lib/enthought/traits/ctraits.c:2370: warning: format '%lu' expects type
>> 'long unsigned int', but argument 3 has type 'Py_ssize_t'
>>
>> I have revision 5087 of matplotlib. In the log you can see that libz is
>> linked against for the backends, but not for ft2font......
>> Best,
>> 
>
> Do you have pkgconfig installed? In setupext.py, it looks like the
> 'z' lib is added only if we are not finding pkgconfig:
>
> def add_ft2font_flags(module):
> 'Add the module flags to ft2font extension'
> if not get_pkgconfig(module, 'freetype2'):
> module.libraries.extend(['freetype', 'z'])
>
> If get_pkgconfig is returning True, but it is not configured properly
> to find libz for freetype2, you may fall into a configure black hole
> where libz never gets added.
>
> Does it help to modify this function to read:
>
> def add_ft2font_flags(module):
> 'Add the module flags to ft2font extension'
> if not get_pkgconfig(module, 'freetype2'):
> module.libraries.extend(['freetype', 'z'])
> add_base_flags(module)
>
> basedirs = module.include_dirs[:] # copy the list to avoid inf loop!
> for d in basedirs:
> module.include_dirs.append(os.path.join(d, 'freetype2'))
> p = os.path.join(d, 'lib/freetype2/include')
> if os.path.exists(p): module.include_dirs.append(p)
> p = os.path.join(d, 'lib/freetype2/include/freetype2')
> if os.path.exists(p): module.include_dirs.append(p)
>
> basedirs = module.library_dirs[:] # copy the list to avoid inf loop!
> for d in basedirs:
> p = os.path.join(d, 'freetype2/lib')
> if os.path.exists(p): module.library_dirs.append(p)
> else:
> add_base_flags(module)
> module.libraries.append('z')
> 

On Mon, Apr 28, 2008 at 3:55 PM, Johann Cohen-Tanugi
<co...@sl...> wrote:
> Hi Michael,
>
> ok, here it is attached. For completion, from the matplotlib directory, I
> issued :
> [cohen@jarrett matplotlib]$ \rm -rf build
> [cohen@jarrett matplotlib]$ python setup.py build > build.log
> The following was printed out to the screen and not redirected :
> src/backend_agg.cpp: In member function 'Py::Object
> RendererAgg::write_rgba(const Py::Tuple&)':
> src/backend_agg.cpp:1303: warning: ignoring return value of 'size_t
> fwrite(const void*, size_t, size_t, FILE*)', declared with attribute
> warn_unused_result
> src/backend_agg.cpp:1308: warning: ignoring return value of 'size_t
> fwrite(const void*, size_t, size_t, FILE*)', declared with attribute
> warn_unused_result
> lib/enthought/traits/ctraits.c: In function '_trait_cast':
> lib/enthought/traits/ctraits.c:2370: warning: format '%lu' expects type
> 'long unsigned int', but argument 3 has type 'Py_ssize_t'
>
> I have revision 5087 of matplotlib. In the log you can see that libz is
> linked against for the backends, but not for ft2font......
> Best,
Do you have pkgconfig installed? In setupext.py, it looks like the
'z' lib is added only if we are not finding pkgconfig:
def add_ft2font_flags(module):
 'Add the module flags to ft2font extension'
 if not get_pkgconfig(module, 'freetype2'):
 module.libraries.extend(['freetype', 'z'])
If get_pkgconfig is returning True, but it is not configured properly
to find libz for freetype2, you may fall into a configure black hole
where libz never gets added.
Does it help to modify this function to read:
def add_ft2font_flags(module):
 'Add the module flags to ft2font extension'
 if not get_pkgconfig(module, 'freetype2'):
 module.libraries.extend(['freetype', 'z'])
 add_base_flags(module)
 basedirs = module.include_dirs[:] # copy the list to avoid inf loop!
 for d in basedirs:
 module.include_dirs.append(os.path.join(d, 'freetype2'))
 p = os.path.join(d, 'lib/freetype2/include')
 if os.path.exists(p): module.include_dirs.append(p)
 p = os.path.join(d, 'lib/freetype2/include/freetype2')
 if os.path.exists(p): module.include_dirs.append(p)
 basedirs = module.library_dirs[:] # copy the list to avoid inf loop!
 for d in basedirs:
 p = os.path.join(d, 'freetype2/lib')
 if os.path.exists(p): module.library_dirs.append(p)
 else:
 add_base_flags(module)
 module.libraries.append('z')

Hi Michael,
ok, here it is attached. For completion, from the matplotlib directory, 
I issued :
[cohen@jarrett matplotlib]$ \rm -rf build
[cohen@jarrett matplotlib]$ python setup.py build > build.log
The following was printed out to the screen and not redirected :
src/backend_agg.cpp: In member function ‘Py::Object 
RendererAgg::write_rgba(const Py::Tuple&)’:
src/backend_agg.cpp:1303: warning: ignoring return value of ‘size_t 
fwrite(const void*, size_t, size_t, FILE*)’, declared with attribute 
warn_unused_result
src/backend_agg.cpp:1308: warning: ignoring return value of ‘size_t 
fwrite(const void*, size_t, size_t, FILE*)’, declared with attribute 
warn_unused_result
lib/enthought/traits/ctraits.c: In function ‘_trait_cast’:
lib/enthought/traits/ctraits.c:2370: warning: format ‘%lu’ expects type 
‘long unsigned int’, but argument 3 has type ‘Py_ssize_t’
I have revision 5087 of matplotlib. In the log you can see that libz is 
linked against for the backends, but not for ft2font......
Best,
Johann
Michael Droettboom wrote:
> Johann Cohen-Tanugi wrote:
>> After browsing the web a little, it seems that the matplotlib build 
>> of ft2font2 is missing the linking of libz.so : if I add it to the 
>> command line
>> [cohen@jarrett matplotlib]$ g++ -pthread -shared 
>> build/temp.linux-i686-2.5/src/ft2font.o 
>> build/temp.linux-i686-2.5/src/mplutils.o 
>> build/temp.linux-i686-2.5/CXX/cxxsupport.o 
>> build/temp.linux-i686-2.5/CXX/cxx_extensions.o 
>> build/temp.linux-i686-2.5/CXX/IndirectPythonInterface.o 
>> build/temp.linux-i686-2.5/CXX/cxxextensions.o -L/usr/local/lib 
>> -L/usr/lib -lstdc++ -lm -lpython2.5 -L/usr/lib -lfreetype _lz -o 
>> build/lib.linux-i686-2.5/matplotlib/ft2font.so
>>
>> and then reinstall matplotlib, the problem goes away, id est I can 
>> import pylab, and the pstest example works. One word on this last 
>> statement though : as is the pstest example does not open any window 
>> to show the plots, id est the final show() command does not do 
>> anything. But if I savefig('pstest'), I can open the pstest.ps 
>> resulting file with gv and can see the plots. I do not know whether 
>> this behavior is expected....
>>
>> So, should I fill a ticket for the inclusion of libz.so at link time 
>> of ft2font.so?
> matplotlib is should already be attempting to dynamically link libz 
> when it generates ft2font.so. I wonder why it wasn't for you. Can you 
> revert any manual changes, remove the build directory ("build" at the 
> top of the source tree), rebuild ("python setup.py build") and attach 
> the output to this list?
>
> Cheers,
> Mike
>> thanks,
>> Johann
>>
>> Arthur M. Greene wrote:
>>> The replies have been helpful, but I'm still trying to figure out 
>>> where the problem lies, but I have noticed that matplotlib-0.90.1 
>>> apparently doesn't use ttconv. I have this version installed at home 
>>> and am able to generate poscript without a problem. Are you able to 
>>> tell which package is complaining about the undefined symbol(s)?
>>>
>>> If I downgrade (at work) I will probably lose some capabilities, 
>>> since the file size of 0.91.2 is more than twice that of 0.90.1 (!) 
>>> But I would prefer to be able to generate .ps or .eps, even if I 
>>> lose the capability of using LaTeX for plot labels, e.g.
>>>
>>> Best wishes,
>>>
>>> Arthur
>>>
>>> -------------------------------
>>> amg -at- iri -dot- columbia -dot- edu
>>>
>>>
>>> Johann Cohen-Tanugi wrote:
>>>> Sorry for the preceding mis-threaded version. Here it is again :
>>>>
>>>> I dont know if it is related, but I am actually failing an exemple :
>>>> [cohen@jarrett matplotlib]$ ipython examples/pstest.py
>>>> --------------------------------------------------------------------------- 
>>>>
>>>> ImportError Traceback (most recent call last)
>>>>
>>>> /home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
>>>> in <module>()
>>>> 2 import matplotlib
>>>> 3 matplotlib.use('PS')
>>>> ----> 4 from pylab import *
>>>> 5
>>>> 6 def f(t):
>>>>
>>>> /usr/lib/python2.5/site-packages/pylab.py in <module>()
>>>> ----> 1
>>>> 2
>>>> 3 from matplotlib.pylab import *
>>>> 4 import matplotlib.pylab
>>>> 5 __doc__ = matplotlib.pylab.__doc__
>>>>
>>>> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
>>>> 201 from numpy import ma
>>>> 202
>>>> --> 203 from matplotlib import mpl # pulls in most modules
>>>> 204
>>>> 205 # catch more than an import error here, since the src could 
>>>> fail too,
>>>>
>>>> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
>>>> 1
>>>> ----> 2 from matplotlib import artist
>>>> 3 from matplotlib import axis
>>>> 4 from matplotlib import axes
>>>> 5 from matplotlib import cbook
>>>> 6 from matplotlib import collections
>>>>
>>>> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
>>>> 12 from ticker import NullLocator, FixedLocator, AutoLocator
>>>> 13
>>>> ---> 14 from font_manager import FontProperties
>>>> 15 from text import Text, TextWithDash
>>>> 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
>>>>
>>>> /usr/lib/python2.5/site-packages/matplotlib/font_manager.py in 
>>>> <module>()
>>>> 38 import matplotlib
>>>> 39 from matplotlib import afm
>>>> ---> 40 from matplotlib import ft2font
>>>> 41 from matplotlib import rcParams, get_configdir
>>>> 42 from matplotlib.cbook import is_string_like
>>>>
>>>> ImportError: 
>>>> /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: undefined 
>>>> symbol: inflateReset
>>>>
>>>> My config is :
>>>> ============================================================================ 
>>>>
>>>> BUILDING MATPLOTLIB
>>>> matplotlib: 0.98pre
>>>> python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
>>>> 4.1.2 20070925 (Red Hat 4.1.2-33)]
>>>> platform: linux2
>>>>
>>>> REQUIRED DEPENDENCIES
>>>> numpy: 1.1.0.dev5077
>>>> freetype2: 9.16.3
>>>>
>>>> OPTIONAL BACKEND DEPENDENCIES
>>>> libpng: 1.2.22
>>>> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>>>> wxPython: 2.8.4.0
>>>> * WxAgg extension not required for wxPython >= 2.8
>>>> Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
>>>> pygobject: 2.14.0
>>>> Qt: Qt: 3.3.8, PyQt: 3.17.4
>>>> Qt4: Qt: 4.3.3, PyQt4: 4.3.3
>>>> Cairo: 1.4.12
>>>>
>>>> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>>>> datetime: present, version unknown
>>>> dateutil: matplotlib will provide
>>>> pytz: matplotlib will provide
>>>>
>>>> OPTIONAL USETEX DEPENDENCIES
>>>> dvipng: 1.5
>>>> ghostscript: 8.61
>>>> latex: 3.141592
>>>>
>>>> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>>>> configobj: matplotlib will provide
>>>> enthought.traits: matplotlib will provide
>>>>
>>>> best,
>>>> Johann
>>>>
>>>>
>>>>
>>>> Johann Cohen-Tanugi wrote:
>>>>> hmm, I did not use matplotlib recently, but looking at the 
>>>>> library, I would guess that I have the same issue :
>>>>> [cohen@jarrett ~]$ ldd 
>>>>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
>>>>> linux-gate.so.1 => (0x00110000)
>>>>> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
>>>>> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
>>>>> libm.so.6 => /lib/libm.so.6 (0x0011f000)
>>>>> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
>>>>> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
>>>>> libc.so.6 => /lib/libc.so.6 (0x003f3000)
>>>>> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
>>>>> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
>>>>> /lib/ld-linux.so.2 (0x001a4000)
>>>>> [cohen@jarrett ~]$ nm 
>>>>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
>>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>> U _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>>>>>
>>>>>
>>>>> Arthur M. Greene wrote:
>>>>>> Hello Matplotlib users,
>>>>>>
>>>>>> I'm having difficulty generating postscript, and receiving an 
>>>>>> error that I'm guessing reflects a version conflict, but I'm not 
>>>>>> sure exactly which version of what needs to be changed. If I 
>>>>>> generate a plot (backend is QtAGG, so I get a window), then click 
>>>>>> on the save button, I get a dialog saying:
>>>>>>
>>>>>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>>>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>>>
>>>>>> Alternatively, if I do
>>>>>>
>>>>>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>>>>>
>>>>>> the result is as follows (essentially the same error):
>>>>>>
>>>>>> exceptions.ImportError
>>>>>> Traceback (most recent call last)
>>>>>>
>>>>>> /home/amg/<ipython console>
>>>>>>
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>>>>>> ----> 1 from matplotlib.pylab import *
>>>>>> 2 import matplotlib.pylab
>>>>>> 3 __doc__ = matplotlib.pylab.__doc__
>>>>>>
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>>>>>> 290
>>>>>> 291
>>>>>> --> 292 from matplotlib.pyplot import *
>>>>>> 293
>>>>>> 294
>>>>>>
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>>>>>> 35
>>>>>> 36 from matplotlib.backends import pylab_setup
>>>>>> ---> 37 new_figure_manager, draw_if_interactive, show = 
>>>>>> pylab_setup()
>>>>>> 38
>>>>>> 39 def switch_backend(newbackend):
>>>>>>
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>>>>>> in pylab_setup()
>>>>>> 22 backend_name = 'backend_'+backend.lower()
>>>>>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>>>>>> ---> 24 globals(),locals(),[backend_name])
>>>>>> 25
>>>>>> 26 # Things we pull in from all backends
>>>>>>
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>>>>>
>>>>>> 22 from matplotlib.font_manager import findfont, 
>>>>>> is_opentype_cff_font
>>>>>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 
>>>>>> LOAD_NO_HINTING
>>>>>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>>>>>> 25 from matplotlib.mathtext import MathTextParser
>>>>>> 26 from matplotlib._mathtext_data import uni2type1
>>>>>>
>>>>>> ImportError: 
>>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>>>>>> undefined symbol: 
>>>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>>>
>>>>>> (The above backtrace is from iPython, but I get the same thing 
>>>>>> running from plain ol' Python.)
>>>>>>
>>>>>> Googling suggests that this might mean I have a version of 
>>>>>> Matplotlib that is too recent for the g++ compiler on my system, 
>>>>>> but I'm not really certain. I'm running as an unprivileged user 
>>>>>> on RHEL4, with most of the necessary libraries already present on 
>>>>>> the system. I've only had to add qt and PyQt, which are installed 
>>>>>> in my home directory, where Matplotlib can apparently find them. 
>>>>>> Version info is as follows:
>>>>>>
>>>>>> These are locally installed:
>>>>>> Python 2.4
>>>>>> qt-3.3.8b
>>>>>> PyQt-3.17.4
>>>>>> Matplotlib-0.91.2
>>>>>>
>>>>>> The following were already present:
>>>>>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>>>>>> glibc-2.3.4-2.39
>>>>>> gcc-3.4.6-9
>>>>>> tcl-8.4.7-2
>>>>>> tk-8.4.7-3.el4_6.1
>>>>>> freetype-2.1.9-6.el4
>>>>>> libpng-1.2.7-3.el4_5.1
>>>>>> zlib-1.2.1.2-1.2
>>>>>> ghostscript-7.07-33.2.el4_6.1
>>>>>> Output of 'gs --version': 8.50
>>>>>>
>>>>>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>>>>>
>>>>>> Not sure what other info to supply; suggestions appreciated.
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>> Arthur
>>>>>>
>>> ------------------------------------------------------------------------- 
>>>
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>>
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>

Arthur M. Greene wrote:
> The replies have been helpful, but I'm still trying to figure out where 
> the problem lies, but I have noticed that matplotlib-0.90.1 apparently 
> doesn't use ttconv. 
That is correct. ttconv is a tool to convert and subset Truetype fonts 
to Postscript fonts for embedding in Postscript files.
> I have this version installed at home and am able to 
> generate poscript without a problem. Are you able to tell which package 
> is complaining about the undefined symbol(s)?
> 
The undefined symbols you get are from the C++ standard library. These 
sorts of messages are very common when you compile something on one 
version of gcc (libg++) and then run on a machine with another version 
of libg++. Did you obtain binaries for matplotlib 0.91.2 somewhere, or 
did you compile from source?
> If I downgrade (at work) I will probably lose some capabilities, since 
> the file size of 0.91.2 is more than twice that of 0.90.1 (!)
I suspect most of the file size difference is due to the inclusion of 
the STIX math fonts. There weren't huge amounts of code added between 
0.90 and 0.91.
Cheers,
Mike
> But I 
> would prefer to be able to generate .ps or .eps, even if I lose the 
> capability of using LaTeX for plot labels, e.g.
>
> Best wishes,
>
> Arthur
>
> -------------------------------
> amg -at- iri -dot- columbia -dot- edu
>
>
> Johann Cohen-Tanugi wrote:
> 
>> Sorry for the preceding mis-threaded version. Here it is again :
>>
>> I dont know if it is related, but I am actually failing an exemple :
>> [cohen@jarrett matplotlib]$ ipython examples/pstest.py
>> ---------------------------------------------------------------------------
>> ImportError Traceback (most recent call last)
>>
>> /home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
>> in <module>()
>> 2 import matplotlib
>> 3 matplotlib.use('PS')
>> ----> 4 from pylab import *
>> 5
>> 6 def f(t):
>>
>> /usr/lib/python2.5/site-packages/pylab.py in <module>()
>> ----> 1
>> 2
>> 3 from matplotlib.pylab import *
>> 4 import matplotlib.pylab
>> 5 __doc__ = matplotlib.pylab.__doc__
>>
>> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
>> 201 from numpy import ma
>> 202
>> --> 203 from matplotlib import mpl # pulls in most modules
>> 204
>> 205 # catch more than an import error here, since the src could fail 
>> too,
>>
>> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
>> 1
>> ----> 2 from matplotlib import artist
>> 3 from matplotlib import axis
>> 4 from matplotlib import axes
>> 5 from matplotlib import cbook
>> 6 from matplotlib import collections
>>
>> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
>> 12 from ticker import NullLocator, FixedLocator, AutoLocator
>> 13
>> ---> 14 from font_manager import FontProperties
>> 15 from text import Text, TextWithDash
>> 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
>>
>> /usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
>> 38 import matplotlib
>> 39 from matplotlib import afm
>> ---> 40 from matplotlib import ft2font
>> 41 from matplotlib import rcParams, get_configdir
>> 42 from matplotlib.cbook import is_string_like
>>
>> ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
>> undefined symbol: inflateReset
>>
>> My config is :
>> ============================================================================
>> BUILDING MATPLOTLIB
>> matplotlib: 0.98pre
>> python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
>> 4.1.2 20070925 (Red Hat 4.1.2-33)]
>> platform: linux2
>>
>> REQUIRED DEPENDENCIES
>> numpy: 1.1.0.dev5077
>> freetype2: 9.16.3
>>
>> OPTIONAL BACKEND DEPENDENCIES
>> libpng: 1.2.22
>> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>> wxPython: 2.8.4.0
>> * WxAgg extension not required for wxPython >= 2.8
>> Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
>> pygobject: 2.14.0
>> Qt: Qt: 3.3.8, PyQt: 3.17.4
>> Qt4: Qt: 4.3.3, PyQt4: 4.3.3
>> Cairo: 1.4.12
>>
>> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>> datetime: present, version unknown
>> dateutil: matplotlib will provide
>> pytz: matplotlib will provide
>>
>> OPTIONAL USETEX DEPENDENCIES
>> dvipng: 1.5
>> ghostscript: 8.61
>> latex: 3.141592
>>
>> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>> configobj: matplotlib will provide
>> enthought.traits: matplotlib will provide
>>
>> best,
>> Johann
>>
>>
>>
>> Johann Cohen-Tanugi wrote:
>> 
>>> hmm, I did not use matplotlib recently, but looking at the library, I 
>>> would guess that I have the same issue :
>>> [cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
>>> linux-gate.so.1 => (0x00110000)
>>> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
>>> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
>>> libm.so.6 => /lib/libm.so.6 (0x0011f000)
>>> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
>>> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
>>> libc.so.6 => /lib/libc.so.6 (0x003f3000)
>>> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
>>> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
>>> /lib/ld-linux.so.2 (0x001a4000)
>>> [cohen@jarrett ~]$ nm 
>>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>> U 
>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>>>
>>>
>>> Arthur M. Greene wrote:
>>> 
>>> 
>>>> Hello Matplotlib users,
>>>>
>>>> I'm having difficulty generating postscript, and receiving an error that 
>>>> I'm guessing reflects a version conflict, but I'm not sure exactly which 
>>>> version of what needs to be changed. If I generate a plot (backend is 
>>>> QtAGG, so I get a window), then click on the save button, I get a dialog 
>>>> saying:
>>>>
>>>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>
>>>> Alternatively, if I do
>>>>
>>>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>>>
>>>> the result is as follows (essentially the same error):
>>>>
>>>> exceptions.ImportError
>>>> Traceback (most recent call last)
>>>>
>>>> /home/amg/<ipython console>
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>>>> ----> 1 from matplotlib.pylab import *
>>>> 2 import matplotlib.pylab
>>>> 3 __doc__ = matplotlib.pylab.__doc__
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>>>> 290
>>>> 291
>>>> --> 292 from matplotlib.pyplot import *
>>>> 293
>>>> 294
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>>>> 35
>>>> 36 from matplotlib.backends import pylab_setup
>>>> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
>>>> 38
>>>> 39 def switch_backend(newbackend):
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>>>> in pylab_setup()
>>>> 22 backend_name = 'backend_'+backend.lower()
>>>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>>>> ---> 24 globals(),locals(),[backend_name])
>>>> 25
>>>> 26 # Things we pull in from all backends
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>>>
>>>> 22 from matplotlib.font_manager import findfont, 		 
>>>> is_opentype_cff_font
>>>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
>>>> LOAD_NO_HINTING
>>>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>>>> 25 from matplotlib.mathtext import MathTextParser
>>>> 26 from matplotlib._mathtext_data import uni2type1
>>>>
>>>> ImportError: 
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>>>> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>
>>>> (The above backtrace is from iPython, but I get the same thing running 
>>>> from plain ol' Python.)
>>>>
>>>> Googling suggests that this might mean I have a version of Matplotlib 
>>>> that is too recent for the g++ compiler on my system, but I'm not really 
>>>> certain. I'm running as an unprivileged user on RHEL4, with most of the 
>>>> necessary libraries already present on the system. I've only had to add 
>>>> qt and PyQt, which are installed in my home directory, where Matplotlib 
>>>> can apparently find them. Version info is as follows:
>>>>
>>>> These are locally installed:
>>>> Python 2.4
>>>> qt-3.3.8b
>>>> PyQt-3.17.4
>>>> Matplotlib-0.91.2
>>>>
>>>> The following were already present:
>>>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>>>> glibc-2.3.4-2.39
>>>> gcc-3.4.6-9
>>>> tcl-8.4.7-2
>>>> tk-8.4.7-3.el4_6.1
>>>> freetype-2.1.9-6.el4
>>>> libpng-1.2.7-3.el4_5.1
>>>> zlib-1.2.1.2-1.2
>>>> ghostscript-7.07-33.2.el4_6.1
>>>> Output of 'gs --version': 8.50
>>>>
>>>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>>>
>>>> Not sure what other info to supply; suggestions appreciated.
>>>>
>>>> Thanks!
>>>>
>>>> Arthur
>>>>
>>>> 
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
> Don't miss this year's exciting event. There's still time to save 100ドル. 
> Use priority code J8TL2D2. 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
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> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 
-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Johann Cohen-Tanugi wrote:
> After browsing the web a little, it seems that the matplotlib build of 
> ft2font2 is missing the linking of libz.so : if I add it to the command 
> line
> [cohen@jarrett matplotlib]$ g++ -pthread -shared 
> build/temp.linux-i686-2.5/src/ft2font.o 
> build/temp.linux-i686-2.5/src/mplutils.o 
> build/temp.linux-i686-2.5/CXX/cxxsupport.o 
> build/temp.linux-i686-2.5/CXX/cxx_extensions.o 
> build/temp.linux-i686-2.5/CXX/IndirectPythonInterface.o 
> build/temp.linux-i686-2.5/CXX/cxxextensions.o -L/usr/local/lib 
> -L/usr/lib -lstdc++ -lm -lpython2.5 -L/usr/lib -lfreetype _lz -o 
> build/lib.linux-i686-2.5/matplotlib/ft2font.so
>
> and then reinstall matplotlib, the problem goes away, id est I can 
> import pylab, and the pstest example works. One word on this last 
> statement though : as is the pstest example does not open any window to 
> show the plots, id est the final show() command does not do anything. 
> But if I savefig('pstest'), I can open the pstest.ps resulting file with 
> gv and can see the plots. I do not know whether this behavior is 
> expected....
>
> So, should I fill a ticket for the inclusion of libz.so at link time of 
> ft2font.so?
> 
matplotlib is should already be attempting to dynamically link libz when 
it generates ft2font.so. I wonder why it wasn't for you. Can you 
revert any manual changes, remove the build directory ("build" at the 
top of the source tree), rebuild ("python setup.py build") and attach 
the output to this list?
Cheers,
Mike
> thanks,
> Johann
>
> Arthur M. Greene wrote:
> 
>> The replies have been helpful, but I'm still trying to figure out where 
>> the problem lies, but I have noticed that matplotlib-0.90.1 apparently 
>> doesn't use ttconv. I have this version installed at home and am able to 
>> generate poscript without a problem. Are you able to tell which package 
>> is complaining about the undefined symbol(s)?
>>
>> If I downgrade (at work) I will probably lose some capabilities, since 
>> the file size of 0.91.2 is more than twice that of 0.90.1 (!) But I 
>> would prefer to be able to generate .ps or .eps, even if I lose the 
>> capability of using LaTeX for plot labels, e.g.
>>
>> Best wishes,
>>
>> Arthur
>>
>> -------------------------------
>> amg -at- iri -dot- columbia -dot- edu
>>
>>
>> Johann Cohen-Tanugi wrote:
>> 
>> 
>>> Sorry for the preceding mis-threaded version. Here it is again :
>>>
>>> I dont know if it is related, but I am actually failing an exemple :
>>> [cohen@jarrett matplotlib]$ ipython examples/pstest.py
>>> ---------------------------------------------------------------------------
>>> ImportError Traceback (most recent call last)
>>>
>>> /home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
>>> in <module>()
>>> 2 import matplotlib
>>> 3 matplotlib.use('PS')
>>> ----> 4 from pylab import *
>>> 5
>>> 6 def f(t):
>>>
>>> /usr/lib/python2.5/site-packages/pylab.py in <module>()
>>> ----> 1
>>> 2
>>> 3 from matplotlib.pylab import *
>>> 4 import matplotlib.pylab
>>> 5 __doc__ = matplotlib.pylab.__doc__
>>>
>>> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
>>> 201 from numpy import ma
>>> 202
>>> --> 203 from matplotlib import mpl # pulls in most modules
>>> 204
>>> 205 # catch more than an import error here, since the src could fail 
>>> too,
>>>
>>> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
>>> 1
>>> ----> 2 from matplotlib import artist
>>> 3 from matplotlib import axis
>>> 4 from matplotlib import axes
>>> 5 from matplotlib import cbook
>>> 6 from matplotlib import collections
>>>
>>> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
>>> 12 from ticker import NullLocator, FixedLocator, AutoLocator
>>> 13
>>> ---> 14 from font_manager import FontProperties
>>> 15 from text import Text, TextWithDash
>>> 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
>>>
>>> /usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
>>> 38 import matplotlib
>>> 39 from matplotlib import afm
>>> ---> 40 from matplotlib import ft2font
>>> 41 from matplotlib import rcParams, get_configdir
>>> 42 from matplotlib.cbook import is_string_like
>>>
>>> ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
>>> undefined symbol: inflateReset
>>>
>>> My config is :
>>> ============================================================================
>>> BUILDING MATPLOTLIB
>>> matplotlib: 0.98pre
>>> python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
>>> 4.1.2 20070925 (Red Hat 4.1.2-33)]
>>> platform: linux2
>>>
>>> REQUIRED DEPENDENCIES
>>> numpy: 1.1.0.dev5077
>>> freetype2: 9.16.3
>>>
>>> OPTIONAL BACKEND DEPENDENCIES
>>> libpng: 1.2.22
>>> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>>> wxPython: 2.8.4.0
>>> * WxAgg extension not required for wxPython >= 2.8
>>> Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
>>> pygobject: 2.14.0
>>> Qt: Qt: 3.3.8, PyQt: 3.17.4
>>> Qt4: Qt: 4.3.3, PyQt4: 4.3.3
>>> Cairo: 1.4.12
>>>
>>> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>>> datetime: present, version unknown
>>> dateutil: matplotlib will provide
>>> pytz: matplotlib will provide
>>>
>>> OPTIONAL USETEX DEPENDENCIES
>>> dvipng: 1.5
>>> ghostscript: 8.61
>>> latex: 3.141592
>>>
>>> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>>> configobj: matplotlib will provide
>>> enthought.traits: matplotlib will provide
>>>
>>> best,
>>> Johann
>>>
>>>
>>>
>>> Johann Cohen-Tanugi wrote:
>>> 
>>> 
>>>> hmm, I did not use matplotlib recently, but looking at the library, I 
>>>> would guess that I have the same issue :
>>>> [cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
>>>> linux-gate.so.1 => (0x00110000)
>>>> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
>>>> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
>>>> libm.so.6 => /lib/libm.so.6 (0x0011f000)
>>>> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
>>>> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
>>>> libc.so.6 => /lib/libc.so.6 (0x003f3000)
>>>> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
>>>> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
>>>> /lib/ld-linux.so.2 (0x001a4000)
>>>> [cohen@jarrett ~]$ nm 
>>>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>> U 
>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>>>>
>>>>
>>>> Arthur M. Greene wrote:
>>>> 
>>>> 
>>>> 
>>>>> Hello Matplotlib users,
>>>>>
>>>>> I'm having difficulty generating postscript, and receiving an error that 
>>>>> I'm guessing reflects a version conflict, but I'm not sure exactly which 
>>>>> version of what needs to be changed. If I generate a plot (backend is 
>>>>> QtAGG, so I get a window), then click on the save button, I get a dialog 
>>>>> saying:
>>>>>
>>>>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>>
>>>>> Alternatively, if I do
>>>>>
>>>>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>>>>
>>>>> the result is as follows (essentially the same error):
>>>>>
>>>>> exceptions.ImportError
>>>>> Traceback (most recent call last)
>>>>>
>>>>> /home/amg/<ipython console>
>>>>>
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>>>>> ----> 1 from matplotlib.pylab import *
>>>>> 2 import matplotlib.pylab
>>>>> 3 __doc__ = matplotlib.pylab.__doc__
>>>>>
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>>>>> 290
>>>>> 291
>>>>> --> 292 from matplotlib.pyplot import *
>>>>> 293
>>>>> 294
>>>>>
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>>>>> 35
>>>>> 36 from matplotlib.backends import pylab_setup
>>>>> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
>>>>> 38
>>>>> 39 def switch_backend(newbackend):
>>>>>
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>>>>> in pylab_setup()
>>>>> 22 backend_name = 'backend_'+backend.lower()
>>>>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>>>>> ---> 24 globals(),locals(),[backend_name])
>>>>> 25
>>>>> 26 # Things we pull in from all backends
>>>>>
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>>>>
>>>>> 22 from matplotlib.font_manager import findfont, 		 
>>>>> is_opentype_cff_font
>>>>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
>>>>> LOAD_NO_HINTING
>>>>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>>>>> 25 from matplotlib.mathtext import MathTextParser
>>>>> 26 from matplotlib._mathtext_data import uni2type1
>>>>>
>>>>> ImportError: 
>>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>>>>> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>>
>>>>> (The above backtrace is from iPython, but I get the same thing running 
>>>>> from plain ol' Python.)
>>>>>
>>>>> Googling suggests that this might mean I have a version of Matplotlib 
>>>>> that is too recent for the g++ compiler on my system, but I'm not really 
>>>>> certain. I'm running as an unprivileged user on RHEL4, with most of the 
>>>>> necessary libraries already present on the system. I've only had to add 
>>>>> qt and PyQt, which are installed in my home directory, where Matplotlib 
>>>>> can apparently find them. Version info is as follows:
>>>>>
>>>>> These are locally installed:
>>>>> Python 2.4
>>>>> qt-3.3.8b
>>>>> PyQt-3.17.4
>>>>> Matplotlib-0.91.2
>>>>>
>>>>> The following were already present:
>>>>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>>>>> glibc-2.3.4-2.39
>>>>> gcc-3.4.6-9
>>>>> tcl-8.4.7-2
>>>>> tk-8.4.7-3.el4_6.1
>>>>> freetype-2.1.9-6.el4
>>>>> libpng-1.2.7-3.el4_5.1
>>>>> zlib-1.2.1.2-1.2
>>>>> ghostscript-7.07-33.2.el4_6.1
>>>>> Output of 'gs --version': 8.50
>>>>>
>>>>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>>>>
>>>>> Not sure what other info to supply; suggestions appreciated.
>>>>>
>>>>> Thanks!
>>>>>
>>>>> Arthur
>>>>>
>>>>> 
>>>>> 
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
>> Don't miss this year's exciting event. There's still time to save 100ドル. 
>> Use priority code J8TL2D2. 
>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>> 
>> 
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
> Don't miss this year's exciting event. There's still time to save 100ドル. 
> Use priority code J8TL2D2. 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 
-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Michiel de Hoon wrote:
> Thanks!
> I uploaded a demo on sourceforge:
> 
> http://sourceforge.net/tracker/index.php?func=detail&aid=1952339&group_id=80706&atid=560722
Michiel,
I have committed a modification of the demo, and also made some tweaks 
in hexbin itself. Manuel Metz also made some changes and additions, and 
more may be in order as the function is tested and used by more people. 
 The main change I made is to use log10 for the log scaling. This the 
usual expectation, I believe.
For interpreting the actual value of what is plotted--the counts per 
cell--it might be good to output the area of the cell, or have an option 
to plot something like counts per unit area divided by total counts, 
which would be a probability density.
Thanks again for contributing hexbin.
Eric

Cay anyone can provide some guidance on using system-installed fonts on 
Mac OS X?
I'm using the PDF backend in matplotlib 0.91.2 on 10.5 (leopard)'s native 
python 2.5 installed with easy_install. Things seem to be working well and 
with matplotlib.font_manager.OSXInstalledFonts() I can see that it seems 
to know what fonts I have on my system. I can even get it to find some of 
these fonts however any attempts to use them results in errors when 
writing out the figure (I've included some stack traces below).
Are there reasons to think another backend would work if PDF fails? Also, 
I'd be interested in an easy way to take a given font file and know 
whether it is of a type supported by MPL and what name I should give to 
MPL to find and use it.
Nick Matsakis
------ an error using /Library/Fonts/tahoma.ttf
Traceback (most recent call last):
 ...skipping some calls...
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backend_bases.py",
line 1195, in print_figure
 **kwargs)
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 1969, in print_pdf
 file.close()
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 420, in close
 self.writeFonts()
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 490, in writeFonts
 fontdictObject = self.embedTTF(realpath, chars[1])
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 859, in embedTTF
 ps_name = Name(font.get_sfnt()[(1,0,0,6)])
KeyError: (1, 0, 0, 6)
----- a different error using /System/Library/Fonts/AppleGothic.ttf
 ...skipping some calls...
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backend_bases.py", 
line 1195, in print_figure
 **kwargs)
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 1969, in print_pdf
 file.close()
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 420, in close
 self.writeFonts()
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 490, in writeFonts
 fontdictObject = self.embedTTF(realpath, chars[1])
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 901, in embedTTF
 return embedTTFType3(font, characters, descriptor)
 File "/Library/Python/2.5/site-packages/matplotlib-0.91.2-py2.5-macosx-10.5-ppc.egg/matplotlib/backends/backend_pdf.py", 
line 689, in embedTTFType3
 glyph_name = font.get_glyph_name(gind)
RuntimeError: Face has no glyph names

On Mon, Apr 28, 2008 at 7:41 AM, Dick Moores <rdm...@gm...> wrote:
> Win XP Pro
>
> I'm trying to get Matplotlib set up, and I've followed the suggestion
> to move matplotlibrc to C:\Documents and Settings\Riley. But it seems
> I also need to rename it to .matplotlibrc . Explorer won't let me. So
> how to do this?
You do not need to do this. In a typical installation, the file will reside in
C:\\Python25\Lib\site-packages\matplotlib\mpl-data\matplotlibrc
You can edit that file.
JDH

Win XP Pro
I'm trying to get Matplotlib set up, and I've followed the suggestion
to move matplotlibrc to C:\Documents and Settings\Riley. But it seems
I also need to rename it to .matplotlibrc . Explorer won't let me. So
how to do this?
Thanks,
Dick Moores
-- 
UliPad <<The Python Editor>>: http://code.google.com/p/ulipad/

After browsing the web a little, it seems that the matplotlib build of 
ft2font2 is missing the linking of libz.so : if I add it to the command 
line
[cohen@jarrett matplotlib]$ g++ -pthread -shared 
build/temp.linux-i686-2.5/src/ft2font.o 
build/temp.linux-i686-2.5/src/mplutils.o 
build/temp.linux-i686-2.5/CXX/cxxsupport.o 
build/temp.linux-i686-2.5/CXX/cxx_extensions.o 
build/temp.linux-i686-2.5/CXX/IndirectPythonInterface.o 
build/temp.linux-i686-2.5/CXX/cxxextensions.o -L/usr/local/lib 
-L/usr/lib -lstdc++ -lm -lpython2.5 -L/usr/lib -lfreetype _lz -o 
build/lib.linux-i686-2.5/matplotlib/ft2font.so
and then reinstall matplotlib, the problem goes away, id est I can 
import pylab, and the pstest example works. One word on this last 
statement though : as is the pstest example does not open any window to 
show the plots, id est the final show() command does not do anything. 
But if I savefig('pstest'), I can open the pstest.ps resulting file with 
gv and can see the plots. I do not know whether this behavior is 
expected....
So, should I fill a ticket for the inclusion of libz.so at link time of 
ft2font.so?
thanks,
Johann
Arthur M. Greene wrote:
> The replies have been helpful, but I'm still trying to figure out where 
> the problem lies, but I have noticed that matplotlib-0.90.1 apparently 
> doesn't use ttconv. I have this version installed at home and am able to 
> generate poscript without a problem. Are you able to tell which package 
> is complaining about the undefined symbol(s)?
>
> If I downgrade (at work) I will probably lose some capabilities, since 
> the file size of 0.91.2 is more than twice that of 0.90.1 (!) But I 
> would prefer to be able to generate .ps or .eps, even if I lose the 
> capability of using LaTeX for plot labels, e.g.
>
> Best wishes,
>
> Arthur
>
> -------------------------------
> amg -at- iri -dot- columbia -dot- edu
>
>
> Johann Cohen-Tanugi wrote:
> 
>> Sorry for the preceding mis-threaded version. Here it is again :
>>
>> I dont know if it is related, but I am actually failing an exemple :
>> [cohen@jarrett matplotlib]$ ipython examples/pstest.py
>> ---------------------------------------------------------------------------
>> ImportError Traceback (most recent call last)
>>
>> /home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
>> in <module>()
>> 2 import matplotlib
>> 3 matplotlib.use('PS')
>> ----> 4 from pylab import *
>> 5
>> 6 def f(t):
>>
>> /usr/lib/python2.5/site-packages/pylab.py in <module>()
>> ----> 1
>> 2
>> 3 from matplotlib.pylab import *
>> 4 import matplotlib.pylab
>> 5 __doc__ = matplotlib.pylab.__doc__
>>
>> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
>> 201 from numpy import ma
>> 202
>> --> 203 from matplotlib import mpl # pulls in most modules
>> 204
>> 205 # catch more than an import error here, since the src could fail 
>> too,
>>
>> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
>> 1
>> ----> 2 from matplotlib import artist
>> 3 from matplotlib import axis
>> 4 from matplotlib import axes
>> 5 from matplotlib import cbook
>> 6 from matplotlib import collections
>>
>> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
>> 12 from ticker import NullLocator, FixedLocator, AutoLocator
>> 13
>> ---> 14 from font_manager import FontProperties
>> 15 from text import Text, TextWithDash
>> 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
>>
>> /usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
>> 38 import matplotlib
>> 39 from matplotlib import afm
>> ---> 40 from matplotlib import ft2font
>> 41 from matplotlib import rcParams, get_configdir
>> 42 from matplotlib.cbook import is_string_like
>>
>> ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
>> undefined symbol: inflateReset
>>
>> My config is :
>> ============================================================================
>> BUILDING MATPLOTLIB
>> matplotlib: 0.98pre
>> python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
>> 4.1.2 20070925 (Red Hat 4.1.2-33)]
>> platform: linux2
>>
>> REQUIRED DEPENDENCIES
>> numpy: 1.1.0.dev5077
>> freetype2: 9.16.3
>>
>> OPTIONAL BACKEND DEPENDENCIES
>> libpng: 1.2.22
>> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>> wxPython: 2.8.4.0
>> * WxAgg extension not required for wxPython >= 2.8
>> Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
>> pygobject: 2.14.0
>> Qt: Qt: 3.3.8, PyQt: 3.17.4
>> Qt4: Qt: 4.3.3, PyQt4: 4.3.3
>> Cairo: 1.4.12
>>
>> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>> datetime: present, version unknown
>> dateutil: matplotlib will provide
>> pytz: matplotlib will provide
>>
>> OPTIONAL USETEX DEPENDENCIES
>> dvipng: 1.5
>> ghostscript: 8.61
>> latex: 3.141592
>>
>> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>> configobj: matplotlib will provide
>> enthought.traits: matplotlib will provide
>>
>> best,
>> Johann
>>
>>
>>
>> Johann Cohen-Tanugi wrote:
>> 
>>> hmm, I did not use matplotlib recently, but looking at the library, I 
>>> would guess that I have the same issue :
>>> [cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
>>> linux-gate.so.1 => (0x00110000)
>>> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
>>> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
>>> libm.so.6 => /lib/libm.so.6 (0x0011f000)
>>> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
>>> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
>>> libc.so.6 => /lib/libc.so.6 (0x003f3000)
>>> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
>>> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
>>> /lib/ld-linux.so.2 (0x001a4000)
>>> [cohen@jarrett ~]$ nm 
>>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>> U 
>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>>>
>>>
>>> Arthur M. Greene wrote:
>>> 
>>> 
>>>> Hello Matplotlib users,
>>>>
>>>> I'm having difficulty generating postscript, and receiving an error that 
>>>> I'm guessing reflects a version conflict, but I'm not sure exactly which 
>>>> version of what needs to be changed. If I generate a plot (backend is 
>>>> QtAGG, so I get a window), then click on the save button, I get a dialog 
>>>> saying:
>>>>
>>>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>
>>>> Alternatively, if I do
>>>>
>>>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>>>
>>>> the result is as follows (essentially the same error):
>>>>
>>>> exceptions.ImportError
>>>> Traceback (most recent call last)
>>>>
>>>> /home/amg/<ipython console>
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>>>> ----> 1 from matplotlib.pylab import *
>>>> 2 import matplotlib.pylab
>>>> 3 __doc__ = matplotlib.pylab.__doc__
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>>>> 290
>>>> 291
>>>> --> 292 from matplotlib.pyplot import *
>>>> 293
>>>> 294
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>>>> 35
>>>> 36 from matplotlib.backends import pylab_setup
>>>> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
>>>> 38
>>>> 39 def switch_backend(newbackend):
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>>>> in pylab_setup()
>>>> 22 backend_name = 'backend_'+backend.lower()
>>>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>>>> ---> 24 globals(),locals(),[backend_name])
>>>> 25
>>>> 26 # Things we pull in from all backends
>>>>
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>>>
>>>> 22 from matplotlib.font_manager import findfont, 		 
>>>> is_opentype_cff_font
>>>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
>>>> LOAD_NO_HINTING
>>>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>>>> 25 from matplotlib.mathtext import MathTextParser
>>>> 26 from matplotlib._mathtext_data import uni2type1
>>>>
>>>> ImportError: 
>>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>>>> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>>
>>>> (The above backtrace is from iPython, but I get the same thing running 
>>>> from plain ol' Python.)
>>>>
>>>> Googling suggests that this might mean I have a version of Matplotlib 
>>>> that is too recent for the g++ compiler on my system, but I'm not really 
>>>> certain. I'm running as an unprivileged user on RHEL4, with most of the 
>>>> necessary libraries already present on the system. I've only had to add 
>>>> qt and PyQt, which are installed in my home directory, where Matplotlib 
>>>> can apparently find them. Version info is as follows:
>>>>
>>>> These are locally installed:
>>>> Python 2.4
>>>> qt-3.3.8b
>>>> PyQt-3.17.4
>>>> Matplotlib-0.91.2
>>>>
>>>> The following were already present:
>>>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>>>> glibc-2.3.4-2.39
>>>> gcc-3.4.6-9
>>>> tcl-8.4.7-2
>>>> tk-8.4.7-3.el4_6.1
>>>> freetype-2.1.9-6.el4
>>>> libpng-1.2.7-3.el4_5.1
>>>> zlib-1.2.1.2-1.2
>>>> ghostscript-7.07-33.2.el4_6.1
>>>> Output of 'gs --version': 8.50
>>>>
>>>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>>>
>>>> Not sure what other info to supply; suggestions appreciated.
>>>>
>>>> Thanks!
>>>>
>>>> Arthur
>>>>
>>>> 
>
>
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> 

On Mon, Apr 28, 2008 at 4:44 AM, Robin <ro...@gm...> wrote:
> I'm still curious to know if theres any convenience functions to do
> this type of bar plotting. Also I've come to rely on the 'stacked'
> option of MATLAB's bar command - is it possible to get that effect in
> matplotlib?
>
> Here is an example of what I'd like to be able to do:
> http://www.mathworks.com/access/helpdesk/help/techdoc/ref/bar2.gif
Take a look at the stacked bar demo:
http://matplotlib.sourceforge.net/examples/bar_stacked.py
for stacked bar charts. We do not currently have any helper functions
for the side-by-side comparisons, so you have to provide the offsets
yourself, as in
http://matplotlib.sourceforge.net/examples/barchart_demo.py
though such functionality would certainly be useful.
JDH

On Mon, Apr 21, 2008 at 5:09 PM, Robin <ro...@gm...> wrote:
> Hi,
>
> Is there anything like the matlab bar function implemented which
> automatically plots groups of bars? Ie bar(x,y) where x.shape = (m,)
> and y.shape =(m,n) or similar...
> In Matlab this would draw M groups of N vertical bars, colored appropriately.
>
> I can't get bar to do this and didn't find anything in the
> documentation - unfortunately I wasn't able to search the mailing list
> since sourceforge was playing up.
>
> Thanks,
>
> Robin
Hi,
I'm still curious to know if theres any convenience functions to do
this type of bar plotting. Also I've come to rely on the 'stacked'
option of MATLAB's bar command - is it possible to get that effect in
matplotlib?
Here is an example of what I'd like to be able to do:
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/bar2.gif
Thanks,
Robin

Michiel,
That looks very nice. I committed it to the trunk as svn 5084. Thank you!
Please provide a simple demo script suitable for inclusion in the 
examples subdirectory, and I will commit that also. I think it would be 
nice to have two subplots, one with a linear color scale, the other with 
a log scale, and with a colorbar for each. (There might be some 
wrinkles with colorbar for a log scale--I don't recall.)
Eric
Michiel de Hoon wrote:
> Hi everybody,
> 
> About two weeks ago I was asking on this mailing list if matplotlib can 
> make hexagonal binning plots as an alternative to scatter plots. I have 
> now written such a function for matplotlib. In case other people are 
> also looking for this functionality, the patch is available here:
> 
> http://sourceforge.net/tracker/index.php?func=detail&aid=1952339&group_id=80706&atid=560722 
> <http://sourceforge.net/tracker/index.php?func=detail&aid=1952339&group_id=80706&atid=560722>
> 
> As an example of this function, the two figures below show a traditional 
> scatter plot, and a hexagonal binning plot using the same data:
> 
> Traditional scatter plot:
> http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/scatter.png 
> <http://bonsai.ims.u-tokyo.ac.jp/%7Emdehoon/scatter.png>
> 
> Hexagonal binning plot, using the same data:
> http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/hexbin.png 
> <http://bonsai.ims.u-tokyo.ac.jp/%7Emdehoon/hexbin.png>
> 
> 
> Best,
> 
> --Michiel.
> 
> 
> 
> 
> 
> Hi everybody,
> 
> Is there a function in matplotlib for hexagonal binning of scatter 
> plots? Here are some examples of what I am looking for:
> 
> http://faculty.washington.edu/tlumley/survey/greyhexbin.png
> 
> http://www.spss.com/research/wilkinson/nViZn/hexbin.gif
> 
> http://addictedtor.free.fr/graphiques/75x75/tn_139.png
> 
> Thanks!
> 
> --Michiel.
> 
> ------------------------------------------------------------------------
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> it now. 
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> >
> 
> 
> ------------------------------------------------------------------------
> 
> -------------------------------------------------------------------------
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> Use priority code J8TL2D2. 
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> 
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hi Sunzen,
I also get similar results as you. - always have
'extremely zoomed' means I pick a corner of your staircase, and zoom in 
on the corner multiple times, each time no bigger than the cross hairs 
of the cursor.
If I don't get the blocked out triangles I get the data changing direction
i.e. if looking at
 |
---
I might see
 --- or |__ or __| 
 | 
I've seen similar results with other graphic toolset (not python based)
I feel it something to do with zooming in beyond the resolution of the 
underlying system (no evidence of this)
Steve
Sunzen Wang wrote:
> Oh, a pity.
> While it's true that it is easily reproduced on my system and also my 
> users'.
> On my system, matplotlib is 0.90.1, and gtkagg backend is used.
>
> Thank you for your attention.
>
> Regards
> On Fri, Apr 25, 2008 at 8:15 PM, Michael Droettboom <md...@st... 
> <mailto:md...@st...>> wrote:
>
> I'm not able to reproduce this bug. What version of matplotlib
> are you using and which backend?
>
> Cheers,
> Mike
> -- 
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>
> -- 
> sunzen
> <<freedom & enjoyment>>
>
> ------------------------------------------------------------------------

Hi everybody,
About two weeks ago I was asking on this mailing list if matplotlib can make hexagonal binning plots as an alternative to scatter plots. I have now written such a function for matplotlib. In case other people are also looking for this functionality, the patch is available here:
http://sourceforge.net/tracker/index.php?func=detail&aid=1952339&group_id=80706&atid=560722
As an example of this function, the two figures below show a traditional scatter plot, and a hexagonal binning plot using the same data:
Traditional scatter plot:
 http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/scatter.png
 
 Hexagonal binning plot, using the same data:
 http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/hexbin.png
 
Best, 
--Michiel.
Hi everybody,
 
 Is there a function in matplotlib for hexagonal binning of scatter plots? Here are some examples of what I am looking for:
 
 http://faculty.washington.edu/tlumley/survey/greyhexbin.png
 
 http://www.spss.com/research/wilkinson/nViZn/hexbin.gif
 
 http://addictedtor.free.fr/graphiques/75x75/tn_139.png
 
 Thanks!
 
 --Michiel.
 
---------------------------------
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Hi.
I run these codes in ipython command line interface.
from pylab import *
subplot(211)
plot([1,2,3],[1,2,3])
set(gca(), xtickslabel = [])
and got the error saying "Type error: set() does not take keyword arguments"
My OS is windows XP. The code I used is copied from matplotlib tutorial. 
Pls help explain why it didnt work.
Thanks.
Sam
-- 
View this message in context: http://www.nabble.com/pls-help%3A-error-using-set%28gca%28%29%2C...%29-tp16930305p16930305.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Oh, a pity.
While it's true that it is easily reproduced on my system and also my
users'.
On my system, matplotlib is 0.90.1, and gtkagg backend is used.
Thank you for your attention.
Regards
On Fri, Apr 25, 2008 at 8:15 PM, Michael Droettboom <md...@st...> wrote:
> I'm not able to reproduce this bug. What version of matplotlib are you
> using and which backend?
>
> Cheers,
> Mike
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>
-- 
sunzen
<<freedom & enjoyment>>

Hello:
 
I am new to Matplotlib. I have my data organized in three columns: x,y,z. x and y represents the coordinates of a point and z is the elevation at that point. I want to create a chart that has on y axis the elevation and on x axis the distance between the coordinates of the points. The chart displays a line that passes all the points, and if is possible interpolate between the elevation points
 
Can somebody give me an example?
 
Thank you in advance,
 
Ionut
 
 ____________________________________________________________________________________
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The replies have been helpful, but I'm still trying to figure out where 
the problem lies, but I have noticed that matplotlib-0.90.1 apparently 
doesn't use ttconv. I have this version installed at home and am able to 
generate poscript without a problem. Are you able to tell which package 
is complaining about the undefined symbol(s)?
If I downgrade (at work) I will probably lose some capabilities, since 
the file size of 0.91.2 is more than twice that of 0.90.1 (!) But I 
would prefer to be able to generate .ps or .eps, even if I lose the 
capability of using LaTeX for plot labels, e.g.
Best wishes,
Arthur
-------------------------------
amg -at- iri -dot- columbia -dot- edu
Johann Cohen-Tanugi wrote:
> Sorry for the preceding mis-threaded version. Here it is again :
> 
> I dont know if it is related, but I am actually failing an exemple :
> [cohen@jarrett matplotlib]$ ipython examples/pstest.py
> ---------------------------------------------------------------------------
> ImportError Traceback (most recent call last)
> 
> /home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
> in <module>()
> 2 import matplotlib
> 3 matplotlib.use('PS')
> ----> 4 from pylab import *
> 5
> 6 def f(t):
> 
> /usr/lib/python2.5/site-packages/pylab.py in <module>()
> ----> 1
> 2
> 3 from matplotlib.pylab import *
> 4 import matplotlib.pylab
> 5 __doc__ = matplotlib.pylab.__doc__
> 
> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
> 201 from numpy import ma
> 202
> --> 203 from matplotlib import mpl # pulls in most modules
> 204
> 205 # catch more than an import error here, since the src could fail 
> too,
> 
> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
> 1
> ----> 2 from matplotlib import artist
> 3 from matplotlib import axis
> 4 from matplotlib import axes
> 5 from matplotlib import cbook
> 6 from matplotlib import collections
> 
> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
> 12 from ticker import NullLocator, FixedLocator, AutoLocator
> 13
> ---> 14 from font_manager import FontProperties
> 15 from text import Text, TextWithDash
> 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
> 
> /usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
> 38 import matplotlib
> 39 from matplotlib import afm
> ---> 40 from matplotlib import ft2font
> 41 from matplotlib import rcParams, get_configdir
> 42 from matplotlib.cbook import is_string_like
> 
> ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
> undefined symbol: inflateReset
> 
> My config is :
> ============================================================================
> BUILDING MATPLOTLIB
> matplotlib: 0.98pre
> python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
> 4.1.2 20070925 (Red Hat 4.1.2-33)]
> platform: linux2
> 
> REQUIRED DEPENDENCIES
> numpy: 1.1.0.dev5077
> freetype2: 9.16.3
> 
> OPTIONAL BACKEND DEPENDENCIES
> libpng: 1.2.22
> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
> wxPython: 2.8.4.0
> * WxAgg extension not required for wxPython >= 2.8
> Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
> pygobject: 2.14.0
> Qt: Qt: 3.3.8, PyQt: 3.17.4
> Qt4: Qt: 4.3.3, PyQt4: 4.3.3
> Cairo: 1.4.12
> 
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
> datetime: present, version unknown
> dateutil: matplotlib will provide
> pytz: matplotlib will provide
> 
> OPTIONAL USETEX DEPENDENCIES
> dvipng: 1.5
> ghostscript: 8.61
> latex: 3.141592
> 
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
> configobj: matplotlib will provide
> enthought.traits: matplotlib will provide
> 
> best,
> Johann
> 
> 
> 
> Johann Cohen-Tanugi wrote:
>> hmm, I did not use matplotlib recently, but looking at the library, I 
>> would guess that I have the same issue :
>> [cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
>> linux-gate.so.1 => (0x00110000)
>> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
>> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
>> libm.so.6 => /lib/libm.so.6 (0x0011f000)
>> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
>> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
>> libc.so.6 => /lib/libc.so.6 (0x003f3000)
>> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
>> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
>> /lib/ld-linux.so.2 (0x001a4000)
>> [cohen@jarrett ~]$ nm 
>> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>> U 
>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>>
>>
>> Arthur M. Greene wrote:
>> 
>>> Hello Matplotlib users,
>>>
>>> I'm having difficulty generating postscript, and receiving an error that 
>>> I'm guessing reflects a version conflict, but I'm not sure exactly which 
>>> version of what needs to be changed. If I generate a plot (backend is 
>>> QtAGG, so I get a window), then click on the save button, I get a dialog 
>>> saying:
>>>
>>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>
>>> Alternatively, if I do
>>>
>>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>>
>>> the result is as follows (essentially the same error):
>>>
>>> exceptions.ImportError
>>> Traceback (most recent call last)
>>>
>>> /home/amg/<ipython console>
>>>
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>>> ----> 1 from matplotlib.pylab import *
>>> 2 import matplotlib.pylab
>>> 3 __doc__ = matplotlib.pylab.__doc__
>>>
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>>> 290
>>> 291
>>> --> 292 from matplotlib.pyplot import *
>>> 293
>>> 294
>>>
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>>> 35
>>> 36 from matplotlib.backends import pylab_setup
>>> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
>>> 38
>>> 39 def switch_backend(newbackend):
>>>
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>>> in pylab_setup()
>>> 22 backend_name = 'backend_'+backend.lower()
>>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>>> ---> 24 globals(),locals(),[backend_name])
>>> 25
>>> 26 # Things we pull in from all backends
>>>
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>>
>>> 22 from matplotlib.font_manager import findfont, 		 
>>> is_opentype_cff_font
>>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
>>> LOAD_NO_HINTING
>>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>>> 25 from matplotlib.mathtext import MathTextParser
>>> 26 from matplotlib._mathtext_data import uni2type1
>>>
>>> ImportError: 
>>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>>> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>>
>>> (The above backtrace is from iPython, but I get the same thing running 
>>> from plain ol' Python.)
>>>
>>> Googling suggests that this might mean I have a version of Matplotlib 
>>> that is too recent for the g++ compiler on my system, but I'm not really 
>>> certain. I'm running as an unprivileged user on RHEL4, with most of the 
>>> necessary libraries already present on the system. I've only had to add 
>>> qt and PyQt, which are installed in my home directory, where Matplotlib 
>>> can apparently find them. Version info is as follows:
>>>
>>> These are locally installed:
>>> Python 2.4
>>> qt-3.3.8b
>>> PyQt-3.17.4
>>> Matplotlib-0.91.2
>>>
>>> The following were already present:
>>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>>> glibc-2.3.4-2.39
>>> gcc-3.4.6-9
>>> tcl-8.4.7-2
>>> tk-8.4.7-3.el4_6.1
>>> freetype-2.1.9-6.el4
>>> libpng-1.2.7-3.el4_5.1
>>> zlib-1.2.1.2-1.2
>>> ghostscript-7.07-33.2.el4_6.1
>>> Output of 'gs --version': 8.50
>>>
>>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>>
>>> Not sure what other info to supply; suggestions appreciated.
>>>
>>> Thanks!
>>>
>>> Arthur
>>>

Sorry for the preceding mis-threaded version. Here it is again :
I dont know if it is related, but I am actually failing an exemple :
[cohen@jarrett matplotlib]$ ipython examples/pstest.py
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
in <module>()
 2 import matplotlib
 3 matplotlib.use('PS')
----> 4 from pylab import *
 5
 6 def f(t):
/usr/lib/python2.5/site-packages/pylab.py in <module>()
----> 1
 2
 3 from matplotlib.pylab import *
 4 import matplotlib.pylab
 5 __doc__ = matplotlib.pylab.__doc__
/usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
 201 from numpy import ma
 202
--> 203 from matplotlib import mpl # pulls in most modules
 204
 205 # catch more than an import error here, since the src could fail 
too,
/usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
 1
----> 2 from matplotlib import artist
 3 from matplotlib import axis
 4 from matplotlib import axes
 5 from matplotlib import cbook
 6 from matplotlib import collections
/usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
 12 from ticker import NullLocator, FixedLocator, AutoLocator
 13
---> 14 from font_manager import FontProperties
 15 from text import Text, TextWithDash
 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
/usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
 38 import matplotlib
 39 from matplotlib import afm
---> 40 from matplotlib import ft2font
 41 from matplotlib import rcParams, get_configdir
 42 from matplotlib.cbook import is_string_like
ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
undefined symbol: inflateReset
My config is :
============================================================================
BUILDING MATPLOTLIB
 matplotlib: 0.98pre
 python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
 4.1.2 20070925 (Red Hat 4.1.2-33)]
 platform: linux2
REQUIRED DEPENDENCIES
 numpy: 1.1.0.dev5077
 freetype2: 9.16.3
OPTIONAL BACKEND DEPENDENCIES
 libpng: 1.2.22
 Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
 wxPython: 2.8.4.0
 * WxAgg extension not required for wxPython >= 2.8
 Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
 pygobject: 2.14.0
 Qt: Qt: 3.3.8, PyQt: 3.17.4
 Qt4: Qt: 4.3.3, PyQt4: 4.3.3
 Cairo: 1.4.12
OPTIONAL DATE/TIMEZONE DEPENDENCIES
 datetime: present, version unknown
 dateutil: matplotlib will provide
 pytz: matplotlib will provide
OPTIONAL USETEX DEPENDENCIES
 dvipng: 1.5
 ghostscript: 8.61
 latex: 3.141592
EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
 configobj: matplotlib will provide
 enthought.traits: matplotlib will provide
best,
Johann
Johann Cohen-Tanugi wrote:
> hmm, I did not use matplotlib recently, but looking at the library, I 
> would guess that I have the same issue :
> [cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
> linux-gate.so.1 => (0x00110000)
> libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
> libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
> libm.so.6 => /lib/libm.so.6 (0x0011f000)
> libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
> libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
> libc.so.6 => /lib/libc.so.6 (0x003f3000)
> libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
> libutil.so.1 => /lib/libutil.so.1 (0x00172000)
> /lib/ld-linux.so.2 (0x001a4000)
> [cohen@jarrett ~]$ nm 
> /usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
> U 
> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
>
>
> Arthur M. Greene wrote:
> 
>> Hello Matplotlib users,
>>
>> I'm having difficulty generating postscript, and receiving an error that 
>> I'm guessing reflects a version conflict, but I'm not sure exactly which 
>> version of what needs to be changed. If I generate a plot (backend is 
>> QtAGG, so I get a window), then click on the save button, I get a dialog 
>> saying:
>>
>> /path_to/matplotlib/ttconv.so: undefined symbol: 
>> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>
>> Alternatively, if I do
>>
>> import matplotlib; matplotlib.use('PS'); from pylab import *
>>
>> the result is as follows (essentially the same error):
>>
>> exceptions.ImportError
>> Traceback (most recent call last)
>>
>> /home/amg/<ipython console>
>>
>> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
>> ----> 1 from matplotlib.pylab import *
>> 2 import matplotlib.pylab
>> 3 __doc__ = matplotlib.pylab.__doc__
>>
>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
>> 290
>> 291
>> --> 292 from matplotlib.pyplot import *
>> 293
>> 294
>>
>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
>> 35
>> 36 from matplotlib.backends import pylab_setup
>> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
>> 38
>> 39 def switch_backend(newbackend):
>>
>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
>> in pylab_setup()
>> 22 backend_name = 'backend_'+backend.lower()
>> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
>> ---> 24 globals(),locals(),[backend_name])
>> 25
>> 26 # Things we pull in from all backends
>>
>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>>
>> 22 from matplotlib.font_manager import findfont, 		 
>> is_opentype_cff_font
>> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
>> LOAD_NO_HINTING
>> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
>> 25 from matplotlib.mathtext import MathTextParser
>> 26 from matplotlib._mathtext_data import uni2type1
>>
>> ImportError: 
>> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
>> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>>
>> (The above backtrace is from iPython, but I get the same thing running 
>> from plain ol' Python.)
>>
>> Googling suggests that this might mean I have a version of Matplotlib 
>> that is too recent for the g++ compiler on my system, but I'm not really 
>> certain. I'm running as an unprivileged user on RHEL4, with most of the 
>> necessary libraries already present on the system. I've only had to add 
>> qt and PyQt, which are installed in my home directory, where Matplotlib 
>> can apparently find them. Version info is as follows:
>>
>> These are locally installed:
>> Python 2.4
>> qt-3.3.8b
>> PyQt-3.17.4
>> Matplotlib-0.91.2
>>
>> The following were already present:
>> Kernel: 2.6.9-67.0.1.ELsmp, on i686
>> glibc-2.3.4-2.39
>> gcc-3.4.6-9
>> tcl-8.4.7-2
>> tk-8.4.7-3.el4_6.1
>> freetype-2.1.9-6.el4
>> libpng-1.2.7-3.el4_5.1
>> zlib-1.2.1.2-1.2
>> ghostscript-7.07-33.2.el4_6.1
>> Output of 'gs --version': 8.50
>>
>> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>>
>> Not sure what other info to supply; suggestions appreciated.
>>
>> Thanks!
>>
>> Arthur
>>
>> -------------------------------
>> amg -at- iri -dot- columbia -dot- edu
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
>> Don't miss this year's exciting event. There's still time to save 100ドル. 
>> Use priority code J8TL2D2. 
>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>> 
>> 
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
> Don't miss this year's exciting event. There's still time to save 100ドル. 
> Use priority code J8TL2D2. 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

I dont know if it is related, but I am actually failing an exemple :
[cohen@jarrett matplotlib]$ ipython examples/pstest.py
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/cohen/data1/sources/python/matplotlib-svn/matplotlib/examples/pstest.py 
in <module>()
 2 import matplotlib
 3 matplotlib.use('PS')
----> 4 from pylab import *
 5
 6 def f(t):
/usr/lib/python2.5/site-packages/pylab.py in <module>()
----> 1
 2
 3 from matplotlib.pylab import *
 4 import matplotlib.pylab
 5 __doc__ = matplotlib.pylab.__doc__
/usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
 201 from numpy import ma
 202
--> 203 from matplotlib import mpl # pulls in most modules
 204
 205 # catch more than an import error here, since the src could fail 
too,
/usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
 1
----> 2 from matplotlib import artist
 3 from matplotlib import axis
 4 from matplotlib import axes
 5 from matplotlib import cbook
 6 from matplotlib import collections
/usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
 12 from ticker import NullLocator, FixedLocator, AutoLocator
 13
---> 14 from font_manager import FontProperties
 15 from text import Text, TextWithDash
 16 from transforms import Affine2D, Bbox, blended_transform_factory, \
/usr/lib/python2.5/site-packages/matplotlib/font_manager.py in <module>()
 38 import matplotlib
 39 from matplotlib import afm
---> 40 from matplotlib import ft2font
 41 from matplotlib import rcParams, get_configdir
 42 from matplotlib.cbook import is_string_like
ImportError: /usr/lib/python2.5/site-packages/matplotlib/ft2font.so: 
undefined symbol: inflateReset
My config is :
============================================================================
BUILDING MATPLOTLIB
 matplotlib: 0.98pre
 python: 2.5.1 (r251:54863, Oct 30 2007, 13:54:11) [GCC
 4.1.2 20070925 (Red Hat 4.1.2-33)]
 platform: linux2
REQUIRED DEPENDENCIES
 numpy: 1.1.0.dev5077
 freetype2: 9.16.3
OPTIONAL BACKEND DEPENDENCIES
 libpng: 1.2.22
 Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
 wxPython: 2.8.4.0
 * WxAgg extension not required for wxPython >= 2.8
 Gtk+: gtk+: 2.12.5, glib: 2.14.6, pygtk: 2.12.0,
 pygobject: 2.14.0
 Qt: Qt: 3.3.8, PyQt: 3.17.4
 Qt4: Qt: 4.3.3, PyQt4: 4.3.3
 Cairo: 1.4.12
OPTIONAL DATE/TIMEZONE DEPENDENCIES
 datetime: present, version unknown
 dateutil: matplotlib will provide
 pytz: matplotlib will provide
OPTIONAL USETEX DEPENDENCIES
 dvipng: 1.5
 ghostscript: 8.61
 latex: 3.141592
EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
 configobj: matplotlib will provide
 enthought.traits: matplotlib will provide
best,
Johann

hmm, I did not use matplotlib recently, but looking at the library, I 
would guess that I have the same issue :
[cohen@jarrett ~]$ ldd /usr/lib/python2.5/site-packages/matplotlib/ttconv.so
 linux-gate.so.1 => (0x00110000)
 libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0x001c1000)
 libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00308000)
 libm.so.6 => /lib/libm.so.6 (0x0011f000)
 libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00148000)
 libpthread.so.0 => /lib/libpthread.so.0 (0x00154000)
 libc.so.6 => /lib/libc.so.6 (0x003f3000)
 libdl.so.2 => /lib/libdl.so.2 (0x0016d000)
 libutil.so.1 => /lib/libutil.so.1 (0x00172000)
 /lib/ld-linux.so.2 (0x001a4000)
[cohen@jarrett ~]$ nm 
/usr/lib/python2.5/site-packages/matplotlib/ttconv.so | grep 
_ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
 U 
_ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE@@GLIBCXX_3.4
Arthur M. Greene wrote:
> Hello Matplotlib users,
>
> I'm having difficulty generating postscript, and receiving an error that 
> I'm guessing reflects a version conflict, but I'm not sure exactly which 
> version of what needs to be changed. If I generate a plot (backend is 
> QtAGG, so I get a window), then click on the save button, I get a dialog 
> saying:
>
> /path_to/matplotlib/ttconv.so: undefined symbol: 
> _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>
> Alternatively, if I do
>
> import matplotlib; matplotlib.use('PS'); from pylab import *
>
> the result is as follows (essentially the same error):
>
> exceptions.ImportError
> Traceback (most recent call last)
>
> /home/amg/<ipython console>
>
> /home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
> ----> 1 from matplotlib.pylab import *
> 2 import matplotlib.pylab
> 3 __doc__ = matplotlib.pylab.__doc__
>
> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
> 290
> 291
> --> 292 from matplotlib.pyplot import *
> 293
> 294
>
> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
> 35
> 36 from matplotlib.backends import pylab_setup
> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
> 38
> 39 def switch_backend(newbackend):
>
> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
> in pylab_setup()
> 22 backend_name = 'backend_'+backend.lower()
> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
> ---> 24 globals(),locals(),[backend_name])
> 25
> 26 # Things we pull in from all backends
>
> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
>
> 22 from matplotlib.font_manager import findfont, 		 
> is_opentype_cff_font
> 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
> LOAD_NO_HINTING
> ---> 24 from matplotlib.ttconv import convert_ttf_to_ps
> 25 from matplotlib.mathtext import MathTextParser
> 26 from matplotlib._mathtext_data import uni2type1
>
> ImportError: 
> /home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
> undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
>
> (The above backtrace is from iPython, but I get the same thing running 
> from plain ol' Python.)
>
> Googling suggests that this might mean I have a version of Matplotlib 
> that is too recent for the g++ compiler on my system, but I'm not really 
> certain. I'm running as an unprivileged user on RHEL4, with most of the 
> necessary libraries already present on the system. I've only had to add 
> qt and PyQt, which are installed in my home directory, where Matplotlib 
> can apparently find them. Version info is as follows:
>
> These are locally installed:
> Python 2.4
> qt-3.3.8b
> PyQt-3.17.4
> Matplotlib-0.91.2
>
> The following were already present:
> Kernel: 2.6.9-67.0.1.ELsmp, on i686
> glibc-2.3.4-2.39
> gcc-3.4.6-9
> tcl-8.4.7-2
> tk-8.4.7-3.el4_6.1
> freetype-2.1.9-6.el4
> libpng-1.2.7-3.el4_5.1
> zlib-1.2.1.2-1.2
> ghostscript-7.07-33.2.el4_6.1
> Output of 'gs --version': 8.50
>
> I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
>
> Not sure what other info to supply; suggestions appreciated.
>
> Thanks!
>
> Arthur
>
> -------------------------------
> amg -at- iri -dot- columbia -dot- edu
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
> Don't miss this year's exciting event. There's still time to save 100ドル. 
> Use priority code J8TL2D2. 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

Hello Matplotlib users,
I'm having difficulty generating postscript, and receiving an error that 
I'm guessing reflects a version conflict, but I'm not sure exactly which 
version of what needs to be changed. If I generate a plot (backend is 
QtAGG, so I get a window), then click on the save button, I get a dialog 
saying:
/path_to/matplotlib/ttconv.so: undefined symbol: 
_ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
Alternatively, if I do
import matplotlib; matplotlib.use('PS'); from pylab import *
the result is as follows (essentially the same error):
exceptions.ImportError
Traceback (most recent call last)
/home/amg/<ipython console>
/home/amg/cdat4_1/lib/python2.4/site-packages/pylab.py
----> 1 from matplotlib.pylab import *
 2 import matplotlib.pylab
 3 __doc__ = matplotlib.pylab.__doc__
/home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pylab.py
 290
 291
--> 292 from matplotlib.pyplot import *
 293
 294
/home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/pyplot.py
 35
 36 from matplotlib.backends import pylab_setup
---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
 38
 39 def switch_backend(newbackend):
/home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/__init__.py 
in pylab_setup()
 22 backend_name = 'backend_'+backend.lower()
 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
---> 24 globals(),locals(),[backend_name])
 25
 26 # Things we pull in from all backends
/home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py 
 22 from matplotlib.font_manager import findfont, 		 
is_opentype_cff_font
 23 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, 		 
LOAD_NO_HINTING
---> 24 from matplotlib.ttconv import convert_ttf_to_ps
 25 from matplotlib.mathtext import MathTextParser
 26 from matplotlib._mathtext_data import uni2type1
ImportError: 
/home/amg/cdat4_1/lib/python2.4/site-packages/matplotlib/ttconv.so: 
undefined symbol: _ZTVSt19basic_ostringstreamIcSt11char_traitsIcESaIcEE
(The above backtrace is from iPython, but I get the same thing running 
from plain ol' Python.)
Googling suggests that this might mean I have a version of Matplotlib 
that is too recent for the g++ compiler on my system, but I'm not really 
certain. I'm running as an unprivileged user on RHEL4, with most of the 
necessary libraries already present on the system. I've only had to add 
qt and PyQt, which are installed in my home directory, where Matplotlib 
can apparently find them. Version info is as follows:
These are locally installed:
Python 2.4
qt-3.3.8b
PyQt-3.17.4
Matplotlib-0.91.2
The following were already present:
Kernel: 2.6.9-67.0.1.ELsmp, on i686
glibc-2.3.4-2.39
gcc-3.4.6-9
tcl-8.4.7-2
tk-8.4.7-3.el4_6.1
freetype-2.1.9-6.el4
libpng-1.2.7-3.el4_5.1
zlib-1.2.1.2-1.2
ghostscript-7.07-33.2.el4_6.1
Output of 'gs --version': 8.50
I tried switching to qt4/PyQt4, but then ipython -pylab hangs...
Not sure what other info to supply; suggestions appreciated.
Thanks!
Arthur
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amg -at- iri -dot- columbia -dot- edu