matplotlib-users Mailing List for matplotlib

Sebastian Krieger wrote:
> Dear all!
>
> I would like to ask two questions: one concerning imshow with the 
> Robinson projection and the second about the latitude limits for the 
> same map projection.
>
> First, I am trying to make a Robinson projection map using imshow 
> instead of contourf as described in the Basemap documentation. I 
> modified the script as follows:
>
> #----------------------------------------------------------------------
> from matplotlib.toolkits.basemap import Basemap, shiftgrid
> from pylab import load, meshgrid, title, arange, show, cm, pi
> #
> # read in topo data (on a regular lat/lon grid)
> etopo = load('etopo20data.gz')
> lons = load('etopo20lons.gz')
> lats = load('etopo20lats.gz')
> #
> # create Basemap instance for Robinson projection.
> m = Basemap(projection='robin',lon_0=0.5*(lons[0]+lons[-1]))
> #
> # compute native map projection coordinates for lat/lon grid.
> etopo, lons = shiftgrid(180., etopo, lons, start=False)
> x, y = m(*meshgrid(lons,lats))
> dx = 2.*pi*m.rmajor/len(lons)
> nx = int((m.xmax-m.xmin)/dx)+1; ny = int((m.ymax-m.ymin)/dx)+1
> dat, x, y = m.transform_scalar(etopo, lons, lats, nx, ny,
> returnxy=True)
> #
> # make filled contour plot.
> im = m.imshow(dat, cmap=cm.jet)
> m.drawcoastlines() # draw coastlines
> m.drawmapboundary() # draw a line around the map region
> m.drawparallels(arange(-90.,120.,30.),labels=[1,0,0,0]) # draw
> parallels
> m.drawmeridians(arange(0.,420.,60.),labels=[0,0,0,1]) # draw meridians
> title('Robinson Projection') # add a title
> show()
> #----------------------------------------------------------------------
>
>
> The result looks as I would expect, except that some data is plot 
> outside of the map boundaries. Using another projection as the 
> Orthographic for example, this problem doesn't happen. Am I doing 
> something wrong?
Sebastian: The Robinson projection is non-rectangular, so it's not 
straightforward to plot an image on it. You would somehow have to mask 
the points outside the projection limb (this is what happens for the 
'ortho' projection). It's much easier just to use pcolor, for example
from matplotlib.toolkits.basemap import Basemap, shiftgrid
from pylab import load, meshgrid, title, arange, show, cm, pi
# read in topo data (on a regular lat/lon grid)
etopo = load('etopo20data.gz')
lons = load('etopo20lons.gz')
lats = load('etopo20lats.gz')
# create Basemap instance for Robinson projection.
m = Basemap(projection='robin',lon_0=0.5*(lons[0]+lons[-1]))
x,y = m(*meshgrid(lons,lats))
p = m.pcolormesh(x,y,etopo,shading='flat')
m.drawcoastlines() # draw coastlines
m.drawmapboundary() # draw a line around the map region
m.drawparallels(arange(-90.,120.,30.),labels=[1,0,0,0]) # draw parallels
m.drawmeridians(arange(0.,420.,60.),labels=[0,0,0,1]) # draw meridians
title('Robinson Projection') # add a title
show()
>
> Second, I work with Topex/POSEIDON and Jason-1 sea surface height 
> anomalies datasets where the latitudes range from about 67.5S to 
> 67.5N. Outside these limits hopefully its blank, as anyone would 
> expect. Aesthetically I find it more appealing if I could limit my map 
> boundaries to these limits, or even lower limits if I zoom the 
> equatorial region. Has anyone ever tried to do this?
You can't with the Robinson projection, it's only defined globally. You 
could do it with the Mercator ('merc'), Miller ('mill') or Cylindrical 
Equidistant ('cyl') projections by specifying the lat/lon values of the 
upper right and lower left corners. 
>
> Thank's in advance and kind regards,
> Sebastian
HTH,
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449
325 Broadway Boulder, CO, USA 80305-3328

Dear all!
I would like to ask two questions: one concerning imshow with the 
Robinson projection and the second about the latitude limits for the 
same map projection.
First, I am trying to make a Robinson projection map using imshow 
instead of contourf as described in the Basemap documentation. I 
modified the script as follows:
 #----------------------------------------------------------------------
 from matplotlib.toolkits.basemap import Basemap, shiftgrid
 from pylab import load, meshgrid, title, arange, show, cm, pi
 #
 # read in topo data (on a regular lat/lon grid)
 etopo = load('etopo20data.gz')
 lons = load('etopo20lons.gz')
 lats = load('etopo20lats.gz')
 #
 # create Basemap instance for Robinson projection.
 m = Basemap(projection='robin',lon_0=0.5*(lons[0]+lons[-1]))
 #
 # compute native map projection coordinates for lat/lon grid.
 etopo, lons = shiftgrid(180., etopo, lons, start=False)
 x, y = m(*meshgrid(lons,lats))
 dx = 2.*pi*m.rmajor/len(lons)
 nx = int((m.xmax-m.xmin)/dx)+1; ny = int((m.ymax-m.ymin)/dx)+1
 dat, x, y = m.transform_scalar(etopo, lons, lats, nx, ny, returnxy=True)
 #
 # make filled contour plot.
 im = m.imshow(dat, cmap=cm.jet)
 m.drawcoastlines() # draw coastlines
 m.drawmapboundary() # draw a line around the map region
 m.drawparallels(arange(-90.,120.,30.),labels=[1,0,0,0]) # draw parallels
 m.drawmeridians(arange(0.,420.,60.),labels=[0,0,0,1]) # draw meridians
 title('Robinson Projection') # add a title
 show()
 #----------------------------------------------------------------------
The result looks as I would expect, except that some data is plot 
outside of the map boundaries. Using another projection as the 
Orthographic for example, this problem doesn't happen. Am I doing 
something wrong?
Second, I work with Topex/POSEIDON and Jason-1 sea surface height 
anomalies datasets where the latitudes range from about 67.5S to 67.5N. 
Outside these limits hopefully its blank, as anyone would expect. 
Aesthetically I find it more appealing if I could limit my map 
boundaries to these limits, or even lower limits if I zoom the 
equatorial region. Has anyone ever tried to do this?
Thank's in advance and kind regards,
Sebastian

Hallo!
> I am not managing to ge matplotlib to work with the new Ubuntu realease hardy 8.04. After I install the python-matplotlib package, I am not able to list my modules in the help() section and I can also not import pylab. As anyone ha that problem and found a solution?
I had the same problem today.
However, in my case gtk was missing and I fixed it with installing
apt-get install python-gtk2
LG
Georg

Atually, I just installed g++ as you were saying and now, it's working.
Thanks for the help.
Johan Mazel
2008年5月30日 Michael Droettboom <md...@st...>:
> This is in diff format, so it indicates that it is around line 960. The
> part to add is this:
>
> if not os.path.exists(tk_inc):
> tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> '../../../include/tcl' + tk_ver))
>
> right after this:
>
> if not os.path.exists(tk_inc):
> tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> '../../include'))
>
> Cheers,
> Mike
>
> Johan Mazel wrote:
>
>> Hi
>> Where am I supposed to copy this piece of code in setupext.py ? At the
>> begining ? At the end ?
>> Thanks for the answer.
>> Johan Mazel
>>
>>
>>
>> 2008年5月30日 Michael Droettboom <md...@st... <mailto:md...@st...>>:
>>
>>
>> It seems you have two unrelated errors here.
>>
>> The first is that Hardy changed how Tkinter is packaged so that
>> matplotlib can't find it. We do not have a workaround for this on
>> the 0.91.x maintenance branch. You will need to apply this patch
>> to setupext.py:
>>
>> +@@ -960,6 +960,9 @@ def add_tk_flags(module):
>> + if not os.path.exists(tk_inc):
>> + tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
>> + '../../include'))
>> ++ if not os.path.exists(tk_inc):
>> ++ tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
>> ++ '../../../include/tcl'
>> + tk_ver))
>> + + if ((not
>> os.path.exists(os.path.join(tk_inc,'tk.h'))) and
>> + os.path.exists(os.path.join(tcl_inc,'tk.h'))):
>> +
>>
>> We have a better fix on the trunk, but it requires more testing.
>>
>> The second error typically occurs when g++ is not installed. Try
>> "sudo apt-get install g++".
>>
>> Cheers,
>> Mike
>>
>> Johan Mazel wrote:
>>
>> Hi
>> I'm trying to install the 0.91.2 maintenance from the SVN on a
>> Ubuntu 8.04 system.
>> But I have an error about Tkinter during the checkin of
>> dependancies :
>>
>> OPTIONAL BACKEND DEPENDENCIES
>> libpng: 1.2.15beta5
>> Tkinter: no
>> * Tkinter present, but header files are
>> not found.
>> * You may need to install development
>> packages.
>>
>> For all the other dependancies, there is no problem at all.
>>
>> When I type python setup.py build, I got this error at the end :
>>
>> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou
>> dossier de ce type
>> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou
>> dossier de ce type
>> error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g
>> -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC
>> -I/usr/include/freetype2 -I/usr/local/include -I/usr/include
>> -I. -I/usr/include/python2.5 -c CXX/cxx_extensions.cxx -o
>> build/temp.linux-i686-2.5/CXX/cxx_extensions.o" failed with
>> exit status 1
>>
>> I'm guessing that the building error is directly related to
>> the fact that I don't have the developpement package for tkinter.
>> The main problem is that I can't find this package through
>> Synaptic my package manager.
>> If you have any idea of where this problem comes from, please,
>> I'm listening.
>>
>> Thanks for the help.
>> Johan Mazel
>>
>> ------------------------------------------------------------------------
>>
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> <mailto: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
>>
>>
>>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>

I'm somewhat grasping at straws here: the Ubuntu-packaged matplotlib 
works for me on Hardy.
Thanks. Ubuntu puts the matplotlib data files in a separate package, 
python-matplotlib-data. That *should* have installed automatically 
alongside python-matplotlib, but you may want to try forcing that:
 sudo apt-get install python-matplotlib-data
If that fails, try reinstalling both python-matplotlib and 
python-matplotlib-data.
 sudo apt-get install --reinstall python-matplotlib
The second error also seems like another instance of the same: the 
python-dateutil package should be installed.
Cheers,
Mike
Marjolaine Rouault wrote:
> hi
>
> I am running python 2.5 and installing the matplotlib using synaptic so it is installing the correct version (I assume). After installing matplotlib, In the help(), this is what i get when asking for the modules liist:
>
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.5/site.py", line 342, in __call__
> return pydoc.help(*args, **kwds)
> File "/usr/lib/python2.5/pydoc.py", line 1649, in __call__
> self.interact()
> File "/usr/lib/python2.5/pydoc.py", line 1667, in interact
> self.help(request)
> File "/usr/lib/python2.5/pydoc.py", line 1683, in help
> elif request == 'modules': self.listmodules()
> File "/usr/lib/python2.5/pydoc.py", line 1804, in listmodules
> ModuleScanner().run(callback)
> File "/usr/lib/python2.5/pydoc.py", line 1855, in run
> for importer, modname, ispkg in pkgutil.walk_packages():
> File "/usr/lib/python2.5/pkgutil.py", line 125, in walk_packages
> for item in walk_packages(path, name+'.', onerror):
> File "/usr/lib/python2.5/pkgutil.py", line 110, in walk_packages
> __import__(name)
> File "/usr/lib/python2.5/site-packages/matplotlib/config/__init__.py", line 5, in <module>
> from rcparams import rc
> File "/usr/lib/python2.5/site-packages/matplotlib/config/rcparams.py", line 117, in <module>
> rcParams = rc_params()
> File "/usr/lib/python2.5/site-packages/matplotlib/config/rcparams.py", line 49, in rc_params
> fname = get_config_file()
> File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 181, in get_config_file
> path = get_data_path() # guaranteed to exist or raise
> File "/usr/lib/python2.5/site-packages/matplotlib/config/verbose.py", line 74, in wrapper
> ret = func(*args, **kwargs)
> File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 129, in _get_data_path_cached
> defaultParams['datapath'][0] = _get_data_path()
> File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 125, in _get_data_path
> raise RuntimeError('Could not find the matplotlib data files')
> RuntimeError: Could not find the matplotlib data files
>
>
> if I try import pylab, this is what I get:
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.5/site-packages/pylab.py", line 1, in <module>
> from matplotlib.pylab import *
> File "/usr/lib/python2.5/site-packages/matplotlib/pylab.py", line 208, in <module>
> from matplotlib import mpl # pulls in most modules
> File "/usr/lib/python2.5/site-packages/matplotlib/mpl.py", line 4, in <module>
> from matplotlib import axes
> File "/usr/lib/python2.5/site-packages/matplotlib/axes.py", line 18, in <module>
> from matplotlib import dates as mdates
> File "/usr/lib/python2.5/site-packages/matplotlib/dates.py", line 91, in <module>
> from dateutil.rrule import rrule, MO, TU, WE, TH, FR, SA, SU, YEARLY, \
> ImportError: No module named dateutil.rrule
>
>
>
> 
> 
>>>> Michael Droettboom <md...@st...> 05/30/08 2:11 PM >>> 
>>>> 
> I don't see this myself. Are you running the correct Python (not 
> accidentally running Python2.4, for example)? Do you have a 
> /usr/lib/python2.5/site-packages/matplotlib directory? What is the 
> exact error message when you import pylab?
>
> Cheers,
> Mike
>
> Marjolaine Rouault wrote:
> 
>> Hi,
>>
>> I am not managing to ge matplotlib to work with the new Ubuntu realease hardy 8.04. After I install the python-matplotlib package, I am not able to list my modules in the help() section and I can also not import pylab. As anyone ha that problem and found a solution?
>>
>> Thanks.
>>
>>
>>
>> 
>> 
>
> 
-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

This is in diff format, so it indicates that it is around line 960. The 
part to add is this:
 if not os.path.exists(tk_inc):
 tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
 '../../../include/tcl' + tk_ver))
right after this:
 if not os.path.exists(tk_inc):
 tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
 '../../include'))
Cheers,
Mike
Johan Mazel wrote:
> Hi
> Where am I supposed to copy this piece of code in setupext.py ? At the 
> begining ? At the end ?
> Thanks for the answer.
> Johan Mazel
>
>
>
> 2008年5月30日 Michael Droettboom <md...@st... <mailto:md...@st...>>:
>
> It seems you have two unrelated errors here.
>
> The first is that Hardy changed how Tkinter is packaged so that
> matplotlib can't find it. We do not have a workaround for this on
> the 0.91.x maintenance branch. You will need to apply this patch
> to setupext.py:
>
> +@@ -960,6 +960,9 @@ def add_tk_flags(module):
> + if not os.path.exists(tk_inc):
> + tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> + '../../include'))
> ++ if not os.path.exists(tk_inc):
> ++ tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> ++ '../../../include/tcl'
> + tk_ver))
> + + if ((not
> os.path.exists(os.path.join(tk_inc,'tk.h'))) and
> + os.path.exists(os.path.join(tcl_inc,'tk.h'))):
> +
>
> We have a better fix on the trunk, but it requires more testing.
>
> The second error typically occurs when g++ is not installed. Try
> "sudo apt-get install g++".
>
> Cheers,
> Mike
>
> Johan Mazel wrote:
>
> Hi
> I'm trying to install the 0.91.2 maintenance from the SVN on a
> Ubuntu 8.04 system.
> But I have an error about Tkinter during the checkin of
> dependancies :
>
> OPTIONAL BACKEND DEPENDENCIES
> libpng: 1.2.15beta5
> Tkinter: no
> * Tkinter present, but header files are
> not found.
> * You may need to install development
> packages.
>
> For all the other dependancies, there is no problem at all.
>
> When I type python setup.py build, I got this error at the end :
>
> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou
> dossier de ce type
> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou
> dossier de ce type
> error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g
> -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC
> -I/usr/include/freetype2 -I/usr/local/include -I/usr/include
> -I. -I/usr/include/python2.5 -c CXX/cxx_extensions.cxx -o
> build/temp.linux-i686-2.5/CXX/cxx_extensions.o" failed with
> exit status 1
>
> I'm guessing that the building error is directly related to
> the fact that I don't have the developpement package for tkinter.
> The main problem is that I can't find this package through
> Synaptic my package manager.
> If you have any idea of where this problem comes from, please,
> I'm listening.
>
> Thanks for the help.
> Johan Mazel
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> ------------------------------------------------------------------------
>
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> <mailto: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
>
>
-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

hi
I am running python 2.5 and installing the matplotlib using synaptic so it is installing the correct version (I assume). After installing matplotlib, In the help(), this is what i get when asking for the modules liist:
 File "<stdin>", line 1, in <module>
 File "/usr/lib/python2.5/site.py", line 342, in __call__
 return pydoc.help(*args, **kwds)
 File "/usr/lib/python2.5/pydoc.py", line 1649, in __call__
 self.interact()
 File "/usr/lib/python2.5/pydoc.py", line 1667, in interact
 self.help(request)
 File "/usr/lib/python2.5/pydoc.py", line 1683, in help
 elif request == 'modules': self.listmodules()
 File "/usr/lib/python2.5/pydoc.py", line 1804, in listmodules
 ModuleScanner().run(callback)
 File "/usr/lib/python2.5/pydoc.py", line 1855, in run
 for importer, modname, ispkg in pkgutil.walk_packages():
 File "/usr/lib/python2.5/pkgutil.py", line 125, in walk_packages
 for item in walk_packages(path, name+'.', onerror):
 File "/usr/lib/python2.5/pkgutil.py", line 110, in walk_packages
 __import__(name)
 File "/usr/lib/python2.5/site-packages/matplotlib/config/__init__.py", line 5, in <module>
 from rcparams import rc
 File "/usr/lib/python2.5/site-packages/matplotlib/config/rcparams.py", line 117, in <module>
 rcParams = rc_params()
 File "/usr/lib/python2.5/site-packages/matplotlib/config/rcparams.py", line 49, in rc_params
 fname = get_config_file()
 File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 181, in get_config_file
 path = get_data_path() # guaranteed to exist or raise
 File "/usr/lib/python2.5/site-packages/matplotlib/config/verbose.py", line 74, in wrapper
 ret = func(*args, **kwargs)
 File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 129, in _get_data_path_cached
 defaultParams['datapath'][0] = _get_data_path()
 File "/usr/lib/python2.5/site-packages/matplotlib/config/cutils.py", line 125, in _get_data_path
 raise RuntimeError('Could not find the matplotlib data files')
RuntimeError: Could not find the matplotlib data files
if I try import pylab, this is what I get:
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/usr/lib/python2.5/site-packages/pylab.py", line 1, in <module>
 from matplotlib.pylab import *
 File "/usr/lib/python2.5/site-packages/matplotlib/pylab.py", line 208, in <module>
 from matplotlib import mpl # pulls in most modules
 File "/usr/lib/python2.5/site-packages/matplotlib/mpl.py", line 4, in <module>
 from matplotlib import axes
 File "/usr/lib/python2.5/site-packages/matplotlib/axes.py", line 18, in <module>
 from matplotlib import dates as mdates
 File "/usr/lib/python2.5/site-packages/matplotlib/dates.py", line 91, in <module>
 from dateutil.rrule import rrule, MO, TU, WE, TH, FR, SA, SU, YEARLY, \
ImportError: No module named dateutil.rrule
 
>>> Michael Droettboom <md...@st...> 05/30/08 2:11 PM >>> 
I don't see this myself. Are you running the correct Python (not 
accidentally running Python2.4, for example)? Do you have a 
/usr/lib/python2.5/site-packages/matplotlib directory? What is the 
exact error message when you import pylab?
Cheers,
Mike
Marjolaine Rouault wrote:
> Hi,
>
> I am not managing to ge matplotlib to work with the new Ubuntu realease hardy 8.04. After I install the python-matplotlib package, I am not able to list my modules in the help() section and I can also not import pylab. As anyone ha that problem and found a solution?
>
> Thanks.
>
>
>
> 
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Hello, all. I've noticed that the alignment of text strings is usually
based on the bounding box of the composite glyphs--the painted region. In
certain cases, this behavior is producing results that I think are
undesirable. One example involves the common case of fonts with tabular
figures (numerals), for which the advance widths are equal (so that the
digits line up in columnar layouts like spreadsheets), but whose glyphs have
different widths (such as a digit one that's narrower than the other
digits). Using such a font, when a Y axis label ends with a one,
matplotlib's glyph-based right alignment takes that labels' digits out of
vertical alignment with the other labels. Similar effects occur with
old-style figures on the X axis, although that's more rarely seen in
practice, I would imagine.
More details and an example script and image are in the support request
http://sourceforge.net/tracker/index.php?func=detail&aid=1978234&group_id=80
706&atid=560721, although I'm not sure whether this issue constitutes a
support request, a feature request, or something else.
What would be required to align text horizontally using advance widths and
vertically using font-wide metrics for ascent, descent, and so on? Thanks.

Hi
Where am I supposed to copy this piece of code in setupext.py ? At the
begining ? At the end ?
Thanks for the answer.
Johan Mazel
2008年5月30日 Michael Droettboom <md...@st...>:
> It seems you have two unrelated errors here.
>
> The first is that Hardy changed how Tkinter is packaged so that matplotlib
> can't find it. We do not have a workaround for this on the 0.91.x
> maintenance branch. You will need to apply this patch to setupext.py:
>
> +@@ -960,6 +960,9 @@ def add_tk_flags(module):
> + if not os.path.exists(tk_inc):
> + tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> + '../../include'))
> ++ if not os.path.exists(tk_inc):
> ++ tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
> ++ '../../../include/tcl' +
> tk_ver))
> + + if ((not
> os.path.exists(os.path.join(tk_inc,'tk.h'))) and
> + os.path.exists(os.path.join(tcl_inc,'tk.h'))):
> +
>
> We have a better fix on the trunk, but it requires more testing.
>
> The second error typically occurs when g++ is not installed. Try "sudo
> apt-get install g++".
>
> Cheers,
> Mike
>
> Johan Mazel wrote:
>
>> Hi
>> I'm trying to install the 0.91.2 maintenance from the SVN on a Ubuntu 8.04
>> system.
>> But I have an error about Tkinter during the checkin of dependancies :
>>
>> OPTIONAL BACKEND DEPENDENCIES
>> libpng: 1.2.15beta5
>> Tkinter: no
>> * Tkinter present, but header files are not found.
>> * You may need to install development packages.
>>
>> For all the other dependancies, there is no problem at all.
>>
>> When I type python setup.py build, I got this error at the end :
>>
>> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier de
>> ce type
>> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier de
>> ce type
>> error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2
>> -Wall -Wstrict-prototypes -fPIC -I/usr/include/freetype2
>> -I/usr/local/include -I/usr/include -I. -I/usr/include/python2.5 -c
>> CXX/cxx_extensions.cxx -o build/temp.linux-i686-2.5/CXX/cxx_extensions.o"
>> failed with exit status 1
>>
>> I'm guessing that the building error is directly related to the fact that
>> I don't have the developpement package for tkinter.
>> The main problem is that I can't find this package through Synaptic my
>> package manager.
>> If you have any idea of where this problem comes from, please, I'm
>> listening.
>>
>> Thanks for the help.
>> Johan Mazel
>> ------------------------------------------------------------------------
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> 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
>
>

It seems you have two unrelated errors here.
The first is that Hardy changed how Tkinter is packaged so that 
matplotlib can't find it. We do not have a workaround for this on the 
0.91.x maintenance branch. You will need to apply this patch to 
setupext.py:
+@@ -960,6 +960,9 @@ def add_tk_flags(module):
+ if not os.path.exists(tk_inc):
+ tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
+ '../../include'))
++ if not os.path.exists(tk_inc):
++ tk_inc = os.path.normpath(os.path.join(tk_lib_dir,
++ '../../../include/tcl' + 
tk_ver))
+ 
+ if ((not os.path.exists(os.path.join(tk_inc,'tk.h'))) and
+ os.path.exists(os.path.join(tcl_inc,'tk.h'))):
+
We have a better fix on the trunk, but it requires more testing.
The second error typically occurs when g++ is not installed. Try "sudo 
apt-get install g++".
Cheers,
Mike
Johan Mazel wrote:
> Hi
> I'm trying to install the 0.91.2 maintenance from the SVN on a Ubuntu 
> 8.04 system.
> But I have an error about Tkinter during the checkin of dependancies :
>
> OPTIONAL BACKEND DEPENDENCIES
> libpng: 1.2.15beta5
> Tkinter: no
> * Tkinter present, but header files are not found.
> * You may need to install development packages.
>
> For all the other dependancies, there is no problem at all.
>
> When I type python setup.py build, I got this error at the end :
>
> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier 
> de ce type
> gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier 
> de ce type
> error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv 
> -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/freetype2 
> -I/usr/local/include -I/usr/include -I. -I/usr/include/python2.5 -c 
> CXX/cxx_extensions.cxx -o 
> build/temp.linux-i686-2.5/CXX/cxx_extensions.o" failed with exit status 1
>
> I'm guessing that the building error is directly related to the fact 
> that I don't have the developpement package for tkinter.
> The main problem is that I can't find this package through Synaptic my 
> package manager.
> If you have any idea of where this problem comes from, please, I'm 
> listening.
>
> Thanks for the help.
> Johan Mazel
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> ------------------------------------------------------------------------
>
> _______________________________________________
> 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

I don't see this myself. Are you running the correct Python (not 
accidentally running Python2.4, for example)? Do you have a 
/usr/lib/python2.5/site-packages/matplotlib directory? What is the 
exact error message when you import pylab?
Cheers,
Mike
Marjolaine Rouault wrote:
> Hi,
>
> I am not managing to ge matplotlib to work with the new Ubuntu realease hardy 8.04. After I install the python-matplotlib package, I am not able to list my modules in the help() section and I can also not import pylab. As anyone ha that problem and found a solution?
>
> Thanks.
>
>
>
> 
-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Hi
I'm trying to install the 0.91.2 maintenance from the SVN on a Ubuntu 8.04
system.
But I have an error about Tkinter during the checkin of dependancies :
OPTIONAL BACKEND DEPENDENCIES
 libpng: 1.2.15beta5
 Tkinter: no
 * Tkinter present, but header files are not found.
 * You may need to install development packages.
For all the other dependancies, there is no problem at all.
When I type python setup.py build, I got this error at the end :
gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier de ce
type
gcc: error trying to exec 'cc1plus': execvp: Aucun fichier ou dossier de ce
type
error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2
-Wall -Wstrict-prototypes -fPIC -I/usr/include/freetype2
-I/usr/local/include -I/usr/include -I. -I/usr/include/python2.5 -c
CXX/cxx_extensions.cxx -o build/temp.linux-i686-2.5/CXX/cxx_extensions.o"
failed with exit status 1
I'm guessing that the building error is directly related to the fact that I
don't have the developpement package for tkinter.
The main problem is that I can't find this package through Synaptic my
package manager.
If you have any idea of where this problem comes from, please, I'm
listening.
Thanks for the help.
Johan Mazel

On Friday 30 May 2008 6:05:05 am kei...@bt... wrote:
> I got this message:
> > /usr/lib64/python2.5/site-packages/matplotlib/numerix/__init__.py:65:
> > DeprecationWarning: numarray use as a numerix backed for matplotlib is
> > deprecated
>
> What does "numerix backed" mean?
Its a typo, it should read backend.

I got this message:
> /usr/lib64/python2.5/site-packages/matplotlib/numerix/__init__.py:65: DeprecationWarning: numarray use as a numerix backed for matplotlib is deprecated
What does "numerix backed" mean?
Keith

Hi,
I'd like to plot three scatter plots on the same figure, each with different
symbols. Associated to these scatter plots, I'd like to put a legend. For
the moment, the legend is based on one of the color of the associated
scatter plot, but it is not relevant. Indeed, the colors are not identical
inside one scatter plot, so the displayed color is discriminating.
So I'd like to display the symbol (circle, square, cross, ...) instead of
the color rectangle. Is it possible ?
Thanks,
Matthieu
-- 
French PhD student
Website : http://matthieu-brucher.developpez.com/
Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92
LinkedIn : http://www.linkedin.com/in/matthieubrucher

Hi,
I am not managing to ge matplotlib to work with the new Ubuntu realease hardy 8.04. After I install the python-matplotlib package, I am not able to list my modules in the help() section and I can also not import pylab. As anyone ha that problem and found a solution?
Thanks.
-- 
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Thanks for that, 
I already have a button to enable picking mode and the original post shows
that I have already tried the copy background/restore/blit, however I must
have been doing something wrong.
Pehaps you can point out what the issue was ro where I was going wrong
John Hunter-4 wrote:
> 
> On Wed, May 28, 2008 at 7:10 AM, New2Python <new...@li...>
> wrote:
> 
>> One issue that I find now is that the removed marker is not redrawn as
>> removed, in other words, all the original markers remain drawn whether or
>> not the datapoints exist in the array. How can I remove the marker I
>> don't
>> want anymore withought doing a clf() call because I can have over 300,000
>> datapoints and the redraw will take ages
> 
> You will need to do some extra work here. I would have a "picking
> mode" which is enabled by a key-stroke or button press, and when the
> mode is enabled, you can copy the background using the
> copy_background/restore region/blit techniques discussed at
> http://www.scipy.org/Cookbook/Matplotlib/Animations. Then you can
> mark your vertices and just draw the vertex marker line over the
> background. Alternatively, you can use the clipped line approach I
> pointed you to in my prior post to only plot the vertices in the
> viewport. You will have to do a little bookkeeping to translate the
> marked vertices in the viewport to the ones in the original dataset.
> 
> Unfortunately, I don't have time to write the complete example right
> now...
> 
> JDH
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
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> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 
> 
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Sent from the matplotlib - users mailing list archive at Nabble.com.

Never mind. I think this may have had to do with something else not 
being installed correctly. This config (numpy 1.10, apple python 
2.5.1, mpl 0.91.2, /usr/X11 png and freetype) works fine though.
On May 29, 2008, at 9:59 PM, Alan G Isaac wrote:
> On 2008年5月29日, Gideon Simpson apparently wrote:
>> Using apple python, numpy 1.10, I get the following error in
>> matplotlib 0.91.2:
>
> I do not see this. I have the
> same mpl and np version,
> and same Python version,
> but I'm on Windows.
>
> fwiw,
> Alan Isaac
>
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

On 2008年5月29日, Gideon Simpson apparently wrote:
> Using apple python, numpy 1.10, I get the following error in 
> matplotlib 0.91.2:
I do not see this. I have the
same mpl and np version,
and same Python version,
but I'm on Windows.
fwiw,
Alan Isaac

Using apple python, numpy 1.10, I get the following error in 
matplotlib 0.91.2:
Python 2.5.1 (r251:54863, Jan 17 2008, 19:35:17)
[GCC 4.0.1 (Apple Inc. build 5465)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
 >>> from pylab import *
 >>> plot([1,2,3,4])
[<matplotlib.lines.Line2D object at 0x2be5d70>]
 >>> show()
Traceback (most recent call last):
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_wx.py", line 1021, in _onPaint
 self.draw(repaint=False)
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_wxagg.py", line 60, in draw
 FigureCanvasAgg.draw(self)
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 254, in draw
 self.renderer = self.get_renderer()
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 265, in get_renderer
 self.renderer = RendererAgg(w, h, self.figure.dpi)
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 66, in __init__
 self.draw_path_collection = self._renderer.draw_path_collection
AttributeError: draw_path_collection
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_wx.py", line 1187, in show
 figwin.canvas.draw()
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_wxagg.py", line 60, in draw
 FigureCanvasAgg.draw(self)
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 254, in draw
 self.renderer = self.get_renderer()
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 265, in get_renderer
 self.renderer = RendererAgg(w, h, self.figure.dpi)
 File "/opt/lib/python2.5/site-packages/matplotlib/backends/ 
backend_agg.py", line 66, in __init__
 self.draw_path_collection = self._renderer.draw_path_collection
AttributeError: draw_path_collection
 >>> Terminated
-gideon

Torsten Hahn wrote:
> Hello,
> 
> i am having some trouble to make the pictures for my thesis look 
> good. I could not figure out, how i can change the space between the 
> axis and the tick-labels in my plots.
> 
> Can anyone help me?
There is an rcParams setting for this. You can set it in the 
matplotlibrc file, or directly in the script. For example,
from matplotlib import pyplot as plt
plt.rc(('xtick.major', 'ytick.major'), pad=20)
plt.plot([1,2,3])
plt.show()
(If this fails because you don't have pyplot--you are using an older 
version of mpl--change the import line to "import pylab as plt".)
Eric
> 
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hello,
i am having some trouble to make the pictures for my thesis look 
good. I could not figure out, how i can change the space between the 
axis and the tick-labels in my plots.
Can anyone help me?

cyclopsvs wrote:
> Hello matplotlib users, 
> 
> I just recently started using the matplot library for generating simple
> graphs instead of using R. The problem i'm experiencing are the following. 
> 
> On my work station i had to enable x11 forwarding to be able to run a script
> generating plots on a server . The problem now is that my own computer is a
> mac and normally when i use the x11 app to connect to a server x forwarding
> is suited to run all script that use a x11 window. 
If you don't need interactive plots, you might consider doing it the
old-fashioned way: saving the plots as png files in batch mode
and displaying with firefox.
import matplotlib
matplotlib.use('Agg') #non-interacive back-end
import matplotlib.pyplot as plt
....
plt.savefig('/home/me/public_html/plots/thefile.png',dpi=100)
We've automated this so the python script makes the plots,
builds an image gallery with thumbnails and
then copies the plots off our cluster (which doesn't mount
the web server directory) and onto the web server
using rsync. For example
http://clouds.eos.ubc.ca/~phil/savefigs/E/
-- Phil

Eric Firing wrote:
> _backend_gdk.c and nxutils.c both call into the numpy C API; maybe some
> c++ code does also. It is not entirely clear to me whether 1.1 is 
> sufficiently binary-compatible that this is safe.
> 
The C API did not change (with the possible exception of additions). I'd 
be really surprised if this is an issue -- the numpy devs worked to make 
sure there would be no breakage at the C API level.
(And even if it did change, as it might one day in the future -- numpy 
2? -- there's a check that happens at numpy load time, during 
import_array(), that checks whether the version of numpy you compiled 
with is the version you're loading now and raises an exception if it's 
not. So, the old nightmares of numeric and numarray possibly being run 
against binary incompatible versions are a thing of the past. This check 
actually saved quite a few headaches during the runup to numpy 1.0, when 
there were a number of C API changes happening in quick succession as 
Travis worked to get it right. That machinery is still in there.)

On Thu, May 29, 2008 at 9:40 AM, cyclopsvs <men...@gm...> wrote:
> Does anyone had some experience with using apache and matplot lib together,
> if so could you share the experiences you had installing everything.
>
> I'd like to know before i continue developing these features of the
> application.
matplotlib renders to a number of different targets, eg user
interfaces, PNG, or postscript. The user interfaces require an x11
connection, but the image generation backends do not. Thjese are the
ones you will want to use with apache, django, etc. What you need to
do is set your default backend to "Agg" in your matplotlibrc file.
This file resides in site-packages/matplotlib/mpl-data and can be
moved into either HOME/..matplotlib or your working directory (eg
where your image generating code lives). Once this is done mpl will
generate PNGs w/o an X11 connection.
http://www.scipy.org/Cookbook/Matplotlib/Django has some information
on using mpl with django, but it is bit out of date because you no
longer need PIL to save to a file handle. mpl can now save PNG
directly to a file handle