John Hunter wrote: > On Mon, Jan 26, 2009 at 2:14 PM, Nick Matzke <mat...@berkeley.edu> wrote: > >> Hi Mauro, >> >> Update: >> >> 1. I went to the place that threw an error in the basemap code: >> >> >> >> "/Library/Frameworks/Python.framework/Versions/4.1.30101/lib/python2.5/site-packages/basemap-0.99.1.0001-py2.5-macosx-10.3-fat.egg/mpl_toolkits/basemap/__init__.py", >> >> >> line 2501, in set_axes_limits >> >> figManager.canvas.draw() >> >> AttributeError: 'NoneType' object has no attribute 'canvas' >> >> >> >> >> >> >> The code is: >> >> ============ >> # force draw if in interactive mode. >> if is_interactive(): >> figManager = _pylab_helpers.Gcf.get_active() >> figManager.canvas.draw() >> ============ >> >> >> So, I changed "interactive = true" to "interactive = false" in my >> matplotlibrc file. >> > > Croizat is calling pylab here via basemap, which is a bug. Croizat is > a wx app, and should never import pylab or pyplot. This is happening > somewhere in basemap, most likely a call to basemap is not passing in > an axes or figure instance in. When basemap gets a default axes > instance of None, it imports pyplot and creates its own. I have no > idea why this is happening on one platform and not another for > Croizat, but this is where the bug is occurring most likely. > > A good way to track this down is to remove matplotlib/pyplot.py from > site-packages and rerun. The stack trace should show you which > Croizat/basemap call is triggering the import, and you can fix it > there. The fix you are trying is dangerous, unsupported, and likely > to fail in unpredicatable ways. > > JDH > > I think the problem could be solved by having the app explicity set interactive to false (using matplotlib.interactive(False)), instead of letting the users matplotlibrc determine it. From a cursory look at the code, it looks like the app is not letting basemap create it's own axes instance with pyplot. It's just that if basemap finds that is_interactive is True, it will use pyplot for force the canvas to be drawn.
-Jeff ---- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
