matplotlib-users Mailing List for matplotlib

Hi all,
I am trying to setup matplotbib on my computer (which is unfortunately
running on windows) and for some reason, it doesn't seem to be working. I
believe I have downloaded everything I should have downloaded (Python 2.5,
numpy, ipython, lpng1226, zlib, gtk, and I'm probably forgetting a few other
things that I did download), yet when I open Ipython and plot the
recommended example
plot([1,2,3])
all I get is the error "NameError: name 'plot' is not defined".
Possibly, the things I downloaded did not go to the right directories. Does
anybody know if this matters, and if yes, where should the files be located?
Part of the problem also is that my computer skills are low, so I don't
understand many of the terms used (such as "backends", for instance - what
is it?).
I would really appreciate it if somebody could tell me what I should try to
do or point me to a step-by-step guide ! (I would really, really love to be
able to plot data I generate on Python...)
Many thanks in advance for your help,
Nathanael

Joshua Lippai wrote:
> Also, I assume I should also take out the no-cpp-precomp flag since
> that doesn't work with GCC 4.2 either? Or does it not matter?
> 
Josh: Apparently it just ignores that flag.
> Josh
>
> On Tue, Apr 8, 2008 at 1:57 PM, Joshua Lippai <dis...@gm...> wrote:
> 
>> Thanks, Jeff. But is there a downside to removing the Wno-long-double
>> flag I should know about?
>>
>> Josh
>> 
No idea.
-Jeff
>>
>>
>> On Tue, Apr 8, 2008 at 9:06 AM, Jeff Whitaker <js...@fa...> wrote:
>> >
>> > Joshua Lippai wrote:
>> >
>> > > Hello all,
>> > >
>> > > I'v been trying to get the same python module setup in 10.5 qorking
>> > > that I had going in 10.4, and so far I've been unable to install
>> > > matplotlib from svn on my own. I've managed to use an installer
>> > > (easy_install I think...) in the mean time, but I'd really like to be
>> > > able to keep more up-to-date. When I run python setup.py build, I get
>> > > the following output:
>> > >
>> > > BUILDING MATPLOTLIB
>> > > matplotlib: 0.98pre
>> > > python: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC
>> > > 4.0.1 (Apple Computer, Inc. build 5363)]
>> > > platform: darwin
>> > >
>> > > REQUIRED DEPENDENCIES
>> > > numpy: 1.0.5.dev4951
>> > > freetype2: 9.16.3
>> > >
>> > > OPTIONAL BACKEND DEPENDENCIES
>> > > libpng: 1.2.22
>> > > Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>> > > wxPython: 2.8.7.1
>> > > * WxAgg extension not required for wxPython >= 2.8
>> > > Gtk+: no
>> > > * Building for Gtk+ requires pygtk; you must be
>> > able
>> > > * to "import gtk" in your build/install environment
>> > > Qt: no
>> > > Qt4: no
>> > > Cairo: no
>> > >
>> > > OPTIONAL DATE/TIMEZONE DEPENDENCIES
>> > > datetime: present, version unknown
>> > > dateutil: 1.4
>> > > pytz: 2008a
>> > >
>> > > OPTIONAL USETEX DEPENDENCIES
>> > > dvipng: 1.9
>> > > ghostscript: 8.57
>> > > latex: 3.141592
>> > >
>> > > EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>> > > configobj: matplotlib will provide
>> > > enthought.traits: matplotlib will provide
>> > >
>> > > [Edit setup.cfg to suppress the above messages]
>> > >
>> > ============================================================================
>> > > running build
>> > > running build_py
>> > > copying lib/matplotlib/cbook.py ->
>> > build/lib.macosx-10.4-fat-2.5/matplotlib
>> > > copying lib/matplotlib/collections.py ->
>> > > build/lib.macosx-10.4-fat-2.5/matplotlib
>> > > copying lib/matplotlib/lines.py ->
>> > build/lib.macosx-10.4-fat-2.5/matplotlib
>> > > copying lib/matplotlib/rcsetup.py ->
>> > build/lib.macosx-10.4-fat-2.5/matplotlib
>> > > copying lib/matplotlib/backends/backend_qt4agg.py ->
>> > > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
>> > > copying lib/matplotlib/backends/backend_qtagg.py ->
>> > > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
>> > > copying lib/matplotlib/mpl-data/matplotlibrc ->
>> > > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
>> > > copying lib/matplotlib/mpl-data/matplotlib.conf ->
>> > > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
>> > > running build_ext
>> > > building 'matplotlib.backends._backend_agg' extension
>> > > gcc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
>> > > -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
>> > > -fno-common -dynamic -DNDEBUG -g -O3
>> > >
>> > -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
>> > > -I/opt/gtk/include/libpng12 -I/usr/local/include -I/usr/include
>> > > -I/usr/X11R6/include -I.
>> > >
>> > -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
>> > > -Isrc -Iagg24/include -I. -I/opt/gtk/include/freetype2
>> > > -I/opt/gtk/include -I/usr/local/include -I/usr/include
>> > > -I/usr/X11R6/include -I.
>> > > -I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5
>> > > -c src/_image.cpp -o build/temp.macosx-10.4-fat-2.5/src/_image.o
>> > > src/_image.cpp: In member function 'Py::Object
>> > > _image_module::from_images(const Py::Tuple&)':
>> > > src/_image.cpp:842: error: insn does not satisfy its constraints:
>> > > (insn 2573 1070 2574 126 agg24/include/agg_color_rgba.h:268 (set
>> > > (mem:QI (plus:SI (reg/f:SI 6 bp)
>> > > (const_int -280 [0xfffffffffffffee8])) [0 SR.2969+0 S1 A8])
>> > > (reg:QI 5 di)) 56 {*movqi_1} (nil)
>> > > (nil))
>> > > src/_image.cpp:842: internal compiler error: in
>> > > reload_cse_simplify_operands, at postreload.c:391
>> > > Please submit a full bug report,
>> > > with preprocessed source if appropriate.
>> > > See <URL:http://developer.apple.com/bugreporter> for instructions.
>> > > error: command 'gcc' failed with exit status 1
>> > >
>> > > I'm using Apple's GCC 4.0.1 that gets installed by the Xcode Developer
>> > > tools, so I really am not sure exactly of what's going on here. I know
>> > > this has (obviously) been built for OS X 10.5 before, and I'm
>> > > wondering if anyone else has run into this and knows how to get around
>> > > it.
>> > >
>> > > Thanks,
>> > > Josh
>> > >
>> > >
>> > >
>> > Josh: I've been able to work around this by installing the gcc 4.2 beta
>> > from Apple. You then have to manually symlink gcc to gcc-4.2 in /usr/bin,
>> > and edit the Makefile buried within the python installation to remove the
>> > -Wno-long-double compiler flag (since it doesn't work with gcc-4.2). I
>> > believe the Makefile is located in
>> > /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config.
>> >
>> > -Jeff
>> >
>> >
>>
>> 

Also, I assume I should also take out the no-cpp-precomp flag since
that doesn't work with GCC 4.2 either? Or does it not matter?
Josh
On Tue, Apr 8, 2008 at 1:57 PM, Joshua Lippai <dis...@gm...> wrote:
> Thanks, Jeff. But is there a downside to removing the Wno-long-double
> flag I should know about?
>
> Josh
>
>
>
> On Tue, Apr 8, 2008 at 9:06 AM, Jeff Whitaker <js...@fa...> wrote:
> >
> > Joshua Lippai wrote:
> >
> > > Hello all,
> > >
> > > I'v been trying to get the same python module setup in 10.5 qorking
> > > that I had going in 10.4, and so far I've been unable to install
> > > matplotlib from svn on my own. I've managed to use an installer
> > > (easy_install I think...) in the mean time, but I'd really like to be
> > > able to keep more up-to-date. When I run python setup.py build, I get
> > > the following output:
> > >
> > > BUILDING MATPLOTLIB
> > > matplotlib: 0.98pre
> > > python: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC
> > > 4.0.1 (Apple Computer, Inc. build 5363)]
> > > platform: darwin
> > >
> > > REQUIRED DEPENDENCIES
> > > numpy: 1.0.5.dev4951
> > > freetype2: 9.16.3
> > >
> > > OPTIONAL BACKEND DEPENDENCIES
> > > libpng: 1.2.22
> > > Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
> > > wxPython: 2.8.7.1
> > > * WxAgg extension not required for wxPython >= 2.8
> > > Gtk+: no
> > > * Building for Gtk+ requires pygtk; you must be
> > able
> > > * to "import gtk" in your build/install environment
> > > Qt: no
> > > Qt4: no
> > > Cairo: no
> > >
> > > OPTIONAL DATE/TIMEZONE DEPENDENCIES
> > > datetime: present, version unknown
> > > dateutil: 1.4
> > > pytz: 2008a
> > >
> > > OPTIONAL USETEX DEPENDENCIES
> > > dvipng: 1.9
> > > ghostscript: 8.57
> > > latex: 3.141592
> > >
> > > EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
> > > configobj: matplotlib will provide
> > > enthought.traits: matplotlib will provide
> > >
> > > [Edit setup.cfg to suppress the above messages]
> > >
> > ============================================================================
> > > running build
> > > running build_py
> > > copying lib/matplotlib/cbook.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib
> > > copying lib/matplotlib/collections.py ->
> > > build/lib.macosx-10.4-fat-2.5/matplotlib
> > > copying lib/matplotlib/lines.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib
> > > copying lib/matplotlib/rcsetup.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib
> > > copying lib/matplotlib/backends/backend_qt4agg.py ->
> > > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> > > copying lib/matplotlib/backends/backend_qtagg.py ->
> > > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> > > copying lib/matplotlib/mpl-data/matplotlibrc ->
> > > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> > > copying lib/matplotlib/mpl-data/matplotlib.conf ->
> > > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> > > running build_ext
> > > building 'matplotlib.backends._backend_agg' extension
> > > gcc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
> > > -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
> > > -fno-common -dynamic -DNDEBUG -g -O3
> > >
> > -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> > > -I/opt/gtk/include/libpng12 -I/usr/local/include -I/usr/include
> > > -I/usr/X11R6/include -I.
> > >
> > -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> > > -Isrc -Iagg24/include -I. -I/opt/gtk/include/freetype2
> > > -I/opt/gtk/include -I/usr/local/include -I/usr/include
> > > -I/usr/X11R6/include -I.
> > > -I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5
> > > -c src/_image.cpp -o build/temp.macosx-10.4-fat-2.5/src/_image.o
> > > src/_image.cpp: In member function 'Py::Object
> > > _image_module::from_images(const Py::Tuple&)':
> > > src/_image.cpp:842: error: insn does not satisfy its constraints:
> > > (insn 2573 1070 2574 126 agg24/include/agg_color_rgba.h:268 (set
> > > (mem:QI (plus:SI (reg/f:SI 6 bp)
> > > (const_int -280 [0xfffffffffffffee8])) [0 SR.2969+0 S1 A8])
> > > (reg:QI 5 di)) 56 {*movqi_1} (nil)
> > > (nil))
> > > src/_image.cpp:842: internal compiler error: in
> > > reload_cse_simplify_operands, at postreload.c:391
> > > Please submit a full bug report,
> > > with preprocessed source if appropriate.
> > > See <URL:http://developer.apple.com/bugreporter> for instructions.
> > > error: command 'gcc' failed with exit status 1
> > >
> > > I'm using Apple's GCC 4.0.1 that gets installed by the Xcode Developer
> > > tools, so I really am not sure exactly of what's going on here. I know
> > > this has (obviously) been built for OS X 10.5 before, and I'm
> > > wondering if anyone else has run into this and knows how to get around
> > > it.
> > >
> > > Thanks,
> > > Josh
> > >
> > >
> > >
> > Josh: I've been able to work around this by installing the gcc 4.2 beta
> > from Apple. You then have to manually symlink gcc to gcc-4.2 in /usr/bin,
> > and edit the Makefile buried within the python installation to remove the
> > -Wno-long-double compiler flag (since it doesn't work with gcc-4.2). I
> > believe the Makefile is located in
> > /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config.
> >
> > -Jeff
> >
> >
>

Thanks, Jeff. But is there a downside to removing the Wno-long-double
flag I should know about?
Josh
On Tue, Apr 8, 2008 at 9:06 AM, Jeff Whitaker <js...@fa...> wrote:
>
> Joshua Lippai wrote:
>
> > Hello all,
> >
> > I'v been trying to get the same python module setup in 10.5 qorking
> > that I had going in 10.4, and so far I've been unable to install
> > matplotlib from svn on my own. I've managed to use an installer
> > (easy_install I think...) in the mean time, but I'd really like to be
> > able to keep more up-to-date. When I run python setup.py build, I get
> > the following output:
> >
> > BUILDING MATPLOTLIB
> > matplotlib: 0.98pre
> > python: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC
> > 4.0.1 (Apple Computer, Inc. build 5363)]
> > platform: darwin
> >
> > REQUIRED DEPENDENCIES
> > numpy: 1.0.5.dev4951
> > freetype2: 9.16.3
> >
> > OPTIONAL BACKEND DEPENDENCIES
> > libpng: 1.2.22
> > Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
> > wxPython: 2.8.7.1
> > * WxAgg extension not required for wxPython >= 2.8
> > Gtk+: no
> > * Building for Gtk+ requires pygtk; you must be
> able
> > * to "import gtk" in your build/install environment
> > Qt: no
> > Qt4: no
> > Cairo: no
> >
> > OPTIONAL DATE/TIMEZONE DEPENDENCIES
> > datetime: present, version unknown
> > dateutil: 1.4
> > pytz: 2008a
> >
> > OPTIONAL USETEX DEPENDENCIES
> > dvipng: 1.9
> > ghostscript: 8.57
> > latex: 3.141592
> >
> > EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
> > configobj: matplotlib will provide
> > enthought.traits: matplotlib will provide
> >
> > [Edit setup.cfg to suppress the above messages]
> >
> ============================================================================
> > running build
> > running build_py
> > copying lib/matplotlib/cbook.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib
> > copying lib/matplotlib/collections.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib
> > copying lib/matplotlib/lines.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib
> > copying lib/matplotlib/rcsetup.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib
> > copying lib/matplotlib/backends/backend_qt4agg.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> > copying lib/matplotlib/backends/backend_qtagg.py ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> > copying lib/matplotlib/mpl-data/matplotlibrc ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> > copying lib/matplotlib/mpl-data/matplotlib.conf ->
> > build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> > running build_ext
> > building 'matplotlib.backends._backend_agg' extension
> > gcc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
> > -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
> > -fno-common -dynamic -DNDEBUG -g -O3
> >
> -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> > -I/opt/gtk/include/libpng12 -I/usr/local/include -I/usr/include
> > -I/usr/X11R6/include -I.
> >
> -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> > -Isrc -Iagg24/include -I. -I/opt/gtk/include/freetype2
> > -I/opt/gtk/include -I/usr/local/include -I/usr/include
> > -I/usr/X11R6/include -I.
> > -I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5
> > -c src/_image.cpp -o build/temp.macosx-10.4-fat-2.5/src/_image.o
> > src/_image.cpp: In member function 'Py::Object
> > _image_module::from_images(const Py::Tuple&)':
> > src/_image.cpp:842: error: insn does not satisfy its constraints:
> > (insn 2573 1070 2574 126 agg24/include/agg_color_rgba.h:268 (set
> > (mem:QI (plus:SI (reg/f:SI 6 bp)
> > (const_int -280 [0xfffffffffffffee8])) [0 SR.2969+0 S1 A8])
> > (reg:QI 5 di)) 56 {*movqi_1} (nil)
> > (nil))
> > src/_image.cpp:842: internal compiler error: in
> > reload_cse_simplify_operands, at postreload.c:391
> > Please submit a full bug report,
> > with preprocessed source if appropriate.
> > See <URL:http://developer.apple.com/bugreporter> for instructions.
> > error: command 'gcc' failed with exit status 1
> >
> > I'm using Apple's GCC 4.0.1 that gets installed by the Xcode Developer
> > tools, so I really am not sure exactly of what's going on here. I know
> > this has (obviously) been built for OS X 10.5 before, and I'm
> > wondering if anyone else has run into this and knows how to get around
> > it.
> >
> > Thanks,
> > Josh
> >
> >
> >
> Josh: I've been able to work around this by installing the gcc 4.2 beta
> from Apple. You then have to manually symlink gcc to gcc-4.2 in /usr/bin,
> and edit the Makefile buried within the python installation to remove the
> -Wno-long-double compiler flag (since it doesn't work with gcc-4.2). I
> believe the Makefile is located in
> /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config.
>
> -Jeff
>
>

On 08.04.2008, at 19:51, Manuel Metz wrote:
> Jochen Küpper wrote:
>>
>> matplotlib creates a contour plot with an x-axes labels of 
>> "0.0000324", ... and adds a "+1" in the lower right corner.
>> Actually, it is often not visible at all.
>> How can I set it to always use the "correct" values directly as 
>> labels?
>>
> gca().xaxis.set_major_formatter(ScalarFormatter(useOffset=False))
>
> see also examples/newscalarformatter_demo.py
That works perfectly!
As a more general question: How was I supposed to find this out? What 
user-documentation is there besides the matplotlib.sf.net homepage and 
the PDF user guide? Should I have found it in these docs already?
Thanks for your help.
Greetings,
Jochen
-- 
Einigkeit und Recht und Freiheit http://www.Jochen-Kuepper.de
 Liberté, Égalité, Fraternité GnuPG key: CC1B0B4D
 Sex, drugs and rock-n-roll

Alan G Isaac wrote:
> On Tuesday 08 April 2008 10:46:32 am Bryan Fodness wrote:
>> I am starting with a zero array, populate it according to 
>> some condition, save the graph
> 
> I am going to need something along this line pretty soon.
> What is the difference between matshow and pcolormesh for
> this? (Besides the aspect ratio?)
matshow is a compatibility interface to imshow, which is restricted to 
regular rectangular grids, but is the fastest way to make an image-like 
plot. pcolormesh is not as fast, but can handle arbitrary quadrilateral 
grids. There is also code to handle irregular rectangular grids at a 
speed intermediate between imshow and pcolormesh (which is a wrapper for 
quadmesh).
A unified interface to all of these is provided by the pcolorfast axes 
method in svn. Its API may need tweaking; suggestions are welcome.
Eric
> 
> Thank you,
> Alan Isaac
> 
> 
> 
> 
> 
> -------------------------------------------------------------------------
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Jochen Küpper wrote:
> Hi,
> 
> when I create a contour plot with the following grid:
> xval = [ 1.00003324, 1.00009971, 1.00016618]
> yval = [250, 260, 270]
> data = ones((3,3))
> contourf(xval, yval, data)
> 
> matplotlib creates a contour plot with an x-axes labels of 
> "0.0000324", ... and adds a "+1" in the lower right corner.
> Actually, it is often not visible at all.
> 
> How can I set it to always use the "correct" values directly as labels?
> 
> Greetings,
> Jochen
Hi, you can use
gca().xaxis.set_major_formatter(ScalarFormatter(useOffset=False))
see also examples/newscalarformatter_demo.py
Manuel

On Tuesday 08 April 2008 10:46:32 Bryan Fodness wrote:
> I am starting with a zero array, populate it according to some
> condition, save the graph, and then reset the array to zero. Can
> someone tell me if there is a better (faster) way to do this? 
My 2c:
* Use inplace addition to save some space
while something:
 ....
 if something:
 if something:
 a[y,x] += 1
* To set all the values to 0:
a.flat = 0

On Tuesday 08 April 2008 10:46:32 am Bryan Fodness wrote:
> I am starting with a zero array, populate it according to 
> some condition, save the graph
I am going to need something along this line pretty soon.
What is the difference between matshow and pcolormesh for
this? (Besides the aspect ratio?)
Thank you,
Alan Isaac

Joshua Lippai wrote:
> Hello all,
>
> I'v been trying to get the same python module setup in 10.5 qorking
> that I had going in 10.4, and so far I've been unable to install
> matplotlib from svn on my own. I've managed to use an installer
> (easy_install I think...) in the mean time, but I'd really like to be
> able to keep more up-to-date. When I run python setup.py build, I get
> the following output:
>
> BUILDING MATPLOTLIB
> matplotlib: 0.98pre
> python: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC
> 4.0.1 (Apple Computer, Inc. build 5363)]
> platform: darwin
>
> REQUIRED DEPENDENCIES
> numpy: 1.0.5.dev4951
> freetype2: 9.16.3
>
> OPTIONAL BACKEND DEPENDENCIES
> libpng: 1.2.22
> Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
> wxPython: 2.8.7.1
> * WxAgg extension not required for wxPython >= 2.8
> Gtk+: no
> * Building for Gtk+ requires pygtk; you must be able
> * to "import gtk" in your build/install environment
> Qt: no
> Qt4: no
> Cairo: no
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
> datetime: present, version unknown
> dateutil: 1.4
> pytz: 2008a
>
> OPTIONAL USETEX DEPENDENCIES
> dvipng: 1.9
> ghostscript: 8.57
> latex: 3.141592
>
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
> configobj: matplotlib will provide
> enthought.traits: matplotlib will provide
>
> [Edit setup.cfg to suppress the above messages]
> ============================================================================
> running build
> running build_py
> copying lib/matplotlib/cbook.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
> copying lib/matplotlib/collections.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib
> copying lib/matplotlib/lines.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
> copying lib/matplotlib/rcsetup.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
> copying lib/matplotlib/backends/backend_qt4agg.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> copying lib/matplotlib/backends/backend_qtagg.py ->
> build/lib.macosx-10.4-fat-2.5/matplotlib/backends
> copying lib/matplotlib/mpl-data/matplotlibrc ->
> build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> copying lib/matplotlib/mpl-data/matplotlib.conf ->
> build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
> running build_ext
> building 'matplotlib.backends._backend_agg' extension
> gcc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
> -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
> -fno-common -dynamic -DNDEBUG -g -O3
> -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> -I/opt/gtk/include/libpng12 -I/usr/local/include -I/usr/include
> -I/usr/X11R6/include -I.
> -I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
> -Isrc -Iagg24/include -I. -I/opt/gtk/include/freetype2
> -I/opt/gtk/include -I/usr/local/include -I/usr/include
> -I/usr/X11R6/include -I.
> -I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5
> -c src/_image.cpp -o build/temp.macosx-10.4-fat-2.5/src/_image.o
> src/_image.cpp: In member function 'Py::Object
> _image_module::from_images(const Py::Tuple&)':
> src/_image.cpp:842: error: insn does not satisfy its constraints:
> (insn 2573 1070 2574 126 agg24/include/agg_color_rgba.h:268 (set
> (mem:QI (plus:SI (reg/f:SI 6 bp)
> (const_int -280 [0xfffffffffffffee8])) [0 SR.2969+0 S1 A8])
> (reg:QI 5 di)) 56 {*movqi_1} (nil)
> (nil))
> src/_image.cpp:842: internal compiler error: in
> reload_cse_simplify_operands, at postreload.c:391
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://developer.apple.com/bugreporter> for instructions.
> error: command 'gcc' failed with exit status 1
>
> I'm using Apple's GCC 4.0.1 that gets installed by the Xcode Developer
> tools, so I really am not sure exactly of what's going on here. I know
> this has (obviously) been built for OS X 10.5 before, and I'm
> wondering if anyone else has run into this and knows how to get around
> it.
>
> Thanks,
> Josh
>
> 
Josh: I've been able to work around this by installing the gcc 4.2 beta 
from Apple. You then have to manually symlink gcc to gcc-4.2 in 
/usr/bin, and edit the Makefile buried within the python installation to 
remove the -Wno-long-double compiler flag (since it doesn't work with 
gcc-4.2). I believe the Makefile is located in 
/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config.
-Jeff

Hi,
I would like to add a Text that has three colors, "bbbbbbb, gggggggg,
rrrrrrrr" where bbbb is in blue, gggg is in green and rrrr in red.
I am able to create three texts but how can I have them position 'side by
side'?
Thanks,
Olivier

On Tuesday 08 April 2008 10:46:32 am Bryan Fodness wrote:
> I am starting with a zero array, populate it according to some
> condition, save the graph, and then reset the array to zero. Can
> someone tell me if there is a better (faster) way to do this?
You might ask at the numpy mailing list, but I suspect that 
a *= 0
might be faster.
> Or am I 
> just doing that much, and that is how long it will take? I have a
> couple hundred graphs that I am creating, that will ultimately be
> combined for animation.
>
> ay=4000
> ax=60
> #create empty array
> a = zeros((ay,ax), int)
>
> while something:
> pcolormesh(X, Y, a)
> figname = 'Frame%03d' %int(field)
> print figname
> savefig(figname)
> # reset values
> a = zeros((ay,ax), int)
> if something:
> if something:
> a[y,x] = a[y,x]+1

I am starting with a zero array, populate it according to some
condition, save the graph, and then reset the array to zero. Can
someone tell me if there is a better (faster) way to do this? Or am I
just doing that much, and that is how long it will take? I have a
couple hundred graphs that I am creating, that will ultimately be
combined for animation.
ay=4000
ax=60
#create empty array
a = zeros((ay,ax), int)
while something:
 pcolormesh(X, Y, a)
 figname = 'Frame%03d' %int(field)
 print figname
 savefig(figname)
 # reset values
 a = zeros((ay,ax), int)
 if something:
 if something:
 a[y,x] = a[y,x]+1

Hello all,
I'v been trying to get the same python module setup in 10.5 qorking
that I had going in 10.4, and so far I've been unable to install
matplotlib from svn on my own. I've managed to use an installer
(easy_install I think...) in the mean time, but I'd really like to be
able to keep more up-to-date. When I run python setup.py build, I get
the following output:
BUILDING MATPLOTLIB
 matplotlib: 0.98pre
 python: 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC
 4.0.1 (Apple Computer, Inc. build 5363)]
 platform: darwin
REQUIRED DEPENDENCIES
 numpy: 1.0.5.dev4951
 freetype2: 9.16.3
OPTIONAL BACKEND DEPENDENCIES
 libpng: 1.2.22
 Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
 wxPython: 2.8.7.1
 * WxAgg extension not required for wxPython >= 2.8
 Gtk+: no
 * Building for Gtk+ requires pygtk; you must be able
 * to "import gtk" in your build/install environment
 Qt: no
 Qt4: no
 Cairo: no
OPTIONAL DATE/TIMEZONE DEPENDENCIES
 datetime: present, version unknown
 dateutil: 1.4
 pytz: 2008a
OPTIONAL USETEX DEPENDENCIES
 dvipng: 1.9
 ghostscript: 8.57
 latex: 3.141592
EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
 configobj: matplotlib will provide
 enthought.traits: matplotlib will provide
[Edit setup.cfg to suppress the above messages]
============================================================================
running build
running build_py
copying lib/matplotlib/cbook.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
copying lib/matplotlib/collections.py ->
build/lib.macosx-10.4-fat-2.5/matplotlib
copying lib/matplotlib/lines.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
copying lib/matplotlib/rcsetup.py -> build/lib.macosx-10.4-fat-2.5/matplotlib
copying lib/matplotlib/backends/backend_qt4agg.py ->
build/lib.macosx-10.4-fat-2.5/matplotlib/backends
copying lib/matplotlib/backends/backend_qtagg.py ->
build/lib.macosx-10.4-fat-2.5/matplotlib/backends
copying lib/matplotlib/mpl-data/matplotlibrc ->
build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
copying lib/matplotlib/mpl-data/matplotlib.conf ->
build/lib.macosx-10.4-fat-2.5/matplotlib/mpl-data
running build_ext
building 'matplotlib.backends._backend_agg' extension
gcc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
-fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
-fno-common -dynamic -DNDEBUG -g -O3
-I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
-I/opt/gtk/include/libpng12 -I/usr/local/include -I/usr/include
-I/usr/X11R6/include -I.
-I/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/numpy/core/include
-Isrc -Iagg24/include -I. -I/opt/gtk/include/freetype2
-I/opt/gtk/include -I/usr/local/include -I/usr/include
-I/usr/X11R6/include -I.
-I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5
-c src/_image.cpp -o build/temp.macosx-10.4-fat-2.5/src/_image.o
src/_image.cpp: In member function 'Py::Object
_image_module::from_images(const Py::Tuple&)':
src/_image.cpp:842: error: insn does not satisfy its constraints:
(insn 2573 1070 2574 126 agg24/include/agg_color_rgba.h:268 (set
(mem:QI (plus:SI (reg/f:SI 6 bp)
 (const_int -280 [0xfffffffffffffee8])) [0 SR.2969+0 S1 A8])
 (reg:QI 5 di)) 56 {*movqi_1} (nil)
 (nil))
src/_image.cpp:842: internal compiler error: in
reload_cse_simplify_operands, at postreload.c:391
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
error: command 'gcc' failed with exit status 1
I'm using Apple's GCC 4.0.1 that gets installed by the Xcode Developer
tools, so I really am not sure exactly of what's going on here. I know
this has (obviously) been built for OS X 10.5 before, and I'm
wondering if anyone else has run into this and knows how to get around
it.
Thanks,
Josh

Hi,
Trying to save a figure with a black figure.facecolor, black figure.edgecolor. 
If I savefig(), it follows the rc file settings, but if save from the button 
in the GUI, I get a white figure.facecolor and figure.edgecolor. I tried 
changing the GUI backends to no avail. Currently using Qt4Agg.
Thanks.