Hello,
may I suggest two enhancements for the upcoming matplotlib 1.0 release.
The first is related to bug #3011650 and fix r8379.
http://matplotlib.svn.sourceforge.net/viewvc/matplotlib?view=revision&revision=8379
Texmanager.py, which is imported during the import of matplotlib, does
call subprocess.Popen('dvipng'...) on every import. This can
significantly add to the startup time of scripts. Given that most
scripts don't use TeX, can the Popen() call be deferred to runtime? On
my system (Python 2.6 for Windows, mpl 1.0rc1, MiKTeX 2.8) the
'backend_driver.py agg' tests are run about 8% (20s) faster with the
following patch.
Index: lib/matplotlib/texmanager.py
===================================================================
--- lib/matplotlib/texmanager.py (revision 8481)
+++ lib/matplotlib/texmanager.py (working copy)
@@ -91,7 +91,7 @@
if not os.path.exists(texcache):
os.mkdir(texcache)
- _dvipng_hack_alpha = dvipng_hack_alpha()
+ _dvipng_hack_alpha = None
# mappable cache of
rgba_arrayd = {}
@@ -516,6 +516,8 @@
if rcParams['text.dvipnghack'] is not None:
hack = rcParams['text.dvipnghack']
else:
+ if self._dvipng_hack_alpha is None:
+ self._dvipng_hack_alpha = dvipng_hack_alpha()
hack = self._dvipng_hack_alpha
if hack:
The second enhancement, a quick fix for placing images of extreme aspect
ratio, is to allow 'panchor' and 'fraction' arguments in colorbar().
http://sourceforge.net/tracker/?func=detail&aid=3016948&group_id=80706&atid=560723
Thanks,
Christoph
Index: lib/matplotlib/texmanager.py
===================================================================
--- lib/matplotlib/texmanager.py (revision 8481)
+++ lib/matplotlib/texmanager.py (working copy)
@@ -91,7 +91,7 @@
if not os.path.exists(texcache):
os.mkdir(texcache)
- _dvipng_hack_alpha = dvipng_hack_alpha()
+ _dvipng_hack_alpha = None
# mappable cache of
rgba_arrayd = {}
@@ -516,6 +516,8 @@
if rcParams['text.dvipnghack'] is not None:
hack = rcParams['text.dvipnghack']
else:
+ if self._dvipng_hack_alpha is None:
+ self._dvipng_hack_alpha = dvipng_hack_alpha()
hack = self._dvipng_hack_alpha
if hack:
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