matplotlib-devel Mailing List for matplotlib

What's new in matplotlib 0.73
new contour functionality
 Filled contours (polygons) with contourf and clabel . See
 examples/contour_demo.py, examples/contourf_demo.py,
 examples/contour_image.py and the screenshot at
 http://matplotlib.sf.net/screenshots.html#pcolor_demo. Thanks Nadia
 and Eric for lots of hard work. This code is not perfect, so please
 let us know if you find bugs or problems.
native font support back in PS
 Added new rc param param ps.useafm so ps backend can use native
 fonts; this currently breaks PS mathtext but makes for smaller files
colorbar now a figure method
 Refactored colorbar code out of pylab into Figure API for API
 developers. matplotlib.pylab colorbar is now a thin wrapper to this
 function.
minor enhancements and bug-fixes
 Experimental support for GTK w/o double buffering, added double
 buffering to gtkagg, exposed some core agg functionality in
 matplotlib.agg, upgraded wrapper generator to CXX 5.3.1, added a
 custom pixel transfer function for GTK which works for Numeric and
 numarray, added patch for problem with Japanse fonts in windows
 registry, fixed ticks for horizontal colorbars, fixed labelsep
 legend bug
Downloads at http://matplotlib.sf.net
JDH

>>>>> "John" == John Hunter <jdh...@ac...> writes:
 John> Just trying to build 0.73 on win32 and hot a snag on the new
 John> _backend_gdk. My GTK win32 install, admittedly a bit out of
 John> date, does not have
 John> #include <gdk/gdkx.h>
Hmm...
I used the time honored "comment it out and see what happens" and was
able to compile and run GTK and GTKAgg examples on win32. As I
understand it, gdkx is an X specific extension anyway.
Are there problems with this approach?
JDH

Just a reminder that there will be a matplotlib sprint on Monday the
21st before PyCon. If you are in the DC area and what to hack on
matplotlib, please come out!
 http://www.python.org/moin/MatplotlibSprint
Hope to see you there!
JDH

Just trying to build 0.73 on win32 and hot a snag on the new
_backend_gdk. My GTK win32 install, admittedly a bit out of date,
does not have
 #include <gdk/gdkx.h>
I'm using GTK-Development-Environment-2.2.4.1.exe and
GTK-Runtime-Environment-2.2.4.1.exe which I got a while ago from
http://sourceforge.net/project/showfiles.php?group_id=71914&package_id=71737
Any ideas on how to best proceed? 
JDH
 

On Thu, 2005年03月17日 at 17:16 -0600, John Hunter wrote:
> ### Cairo CVS build error
> make[2]: Entering directory `/home/jdhunter/python/cvs/cairo/src'
> if /bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I/usr/X11R6/include -I/usr/local/include/libpng12 -I/usr/local/include -I/usr/include/freetype2 -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -fno-strict-aliasing -g -O2 -MT cairo.lo -MD -MP -MF ".deps/cairo.Tpo" -c -o cairo.lo cairo.c; \
> then mv -f ".deps/cairo.Tpo" ".deps/cairo.Plo"; else rm -f ".deps/cairo.Tpo"; exit 1; fi
> mkdir .libs
> gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I/usr/X11R6/include -I/usr/local/include/libpng12 -I/usr/local/include -I/usr/include/freetype2 -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -fno-strict-aliasing -g -O2 -MT cairo.lo -MD -MP -MF .deps/cairo.Tpo -c cairo.c -fPIC -DPIC -o .libs/cairo.lo
> In file included from cairo.h:48,
> from cairoint.h:60,
> from cairo.c:37:
> cairo-features.h:42:9: macro names must be identifiers
> cairo-features.h:48:9: macro names must be identifiers
> cairo-features.h:52:9: macro names must be identifiers
> cairo-features.h:56:9: macro names must be identifiers
> cairo-features.h:58:9: macro names must be identifiers
> cairo-features.h:60:9: macro names must be identifiers
> make[2]: *** [cairo.lo] Error 1
Here's some notes I found regarding changes to cairo-features.h:
1) The public header files will no longer be directly installed into
 the system include directory. They will now be installed in a
 subdirectory named "cairo", (eg. in /usr/include/cairo rather than
 in /usr/include).
 For applications using pkg-config, the change should be mostly
 transparent, as pkg-config will find the new directory.
 However, user will also need to manually remove the old versions of
 cairo.h and cairo-features.h from the system include directories in
 order to prevent them being found first.
Steve

On Thu, 2005年03月17日 at 17:16 -0600, John Hunter wrote:
> >>>>> "Steve" == Steve Chaplin <ste...@ya...> writes:
> 
> Steve> This looks incomplete, what's the Exception type? I tried
> Steve> on my system and it ran OK.
> 
> 
> Oops, the complete traceback is below. Maybe my cairo is out of
> whack. Are you using CVS?
Yes, I'm using CVS. Cairo is currently undergoing rapid development so
one day CVS may compile, the next day it may not, and the day after it
may be fixed and working again. PyCairo will be constantly lagging
behind, trying to keep up with all the changes. Periodically cairo does
a snapshot release and I intend to do a pycairo snapshot release that is
synchronised to cairo snapshot.
The most recent releases are the cairo 0.4.0 and pycairo 0.4.0 snapshots
which should compile OK and work together.
> ### Cairo backend traceback
> peds-pc311:~/python/projects/matplotlib/examples> python simple_plot.py -dCairo
> Traceback (most recent call last):
> File "simple_plot.py", line 15, in ?
> savefig('simple_plot')
> File "/usr/local/lib/python2.3/site-packages/matplotlib/pylab.py", line 712, in savefig
> return fig.savefig(*args, **kwargs)
> File "/usr/local/lib/python2.3/site-packages/matplotlib/figure.py", line 457, in savefig
> self.canvas.print_figure(*args, **kwargs)
> File "/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_cairo.py", line 647, in print_figure
> orientation)
> File "/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_cairo.py", line 561, in print_figure_fn
> if ext == 'png': _save_png (figure, fileObject)
> File "/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_cairo.py", line 583, in _save_png
> ctx.set_target_png (fileObject, cairo.FORMAT_ARGB32, width, height)
> TypeError: Context.set_target_png() argument 1 must be string, not file
> peds-pc311:~/python/projects/matplotlib/examples>
This looks like an old pycairo version which took a filename (str) instead of a fileobject for set_target_png()
Steve