#5601: predefine colors in Sage
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Reporter: jason | Owner: was
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-4.3
Component: graphics | Keywords:
Work_issues: | Author: Mitesh Patel
Reviewer: | Merged:
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Comment(by mpatel):
Replying to [comment:14 robertwb]:
> Is there a way to do some of this lazily, e.g. not import matplotlib at
startup?
The following is ad hoc, but it appears to work. I removed the global
import and the code that sets up the module-scope colormaps. To the
''end'' of `sage.plot.colors` I added
{{{
#!python
# matplotlib color maps, loaded on-demand.
class ColormapLoader(object):
def __init__(self, globs):
self.cm = None
for key in globs:
self.__setattr__(key, globs[key])
def __getattr__(self, name):
if name == '__path__':
return __path__
if not self.cm:
print 'loading matplotlib.cm'
from matplotlib import cm
self.cm = cm
try:
cmap = self.cm.__getattribute__(name)
except AttributeError:
raise AttributeError, 'no colormap with name %s' % name
self.__setattr__(name, cmap)
return cmap
colormaps = ColormapLoader(vars())
import sys
sys.modules['sage.plot.colors'] = colormaps
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5601#comment:15>
Sage <http://www.sagemath.org>
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