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python add-in and matplotlib crash

Question asked by kmaloof on May 6, 2014
Latest reply on May 8, 2014 by kmaloof
I'm trying to make a python add-in toolbar that displays a graph. I can create a graph with a function in command line without any difficulty, but when I try to create the same graph from within a class for the add-in, it crashes. The crash happens whether the class is made in the command line or the add-in button.  What happens is the graph appears, then a few seconds later, arcmap unexpectedly shuts down, and asks if I want to send an error report.

The class causing the crash is:
class ButtonClass15(object):     """Implementation for WizardTest_addin.button (Button)"""     def __init__(self):         self.enabled = True         self.checked = False     def onClick(self):         allVals = ((1,1),(2,2),(3,3))         valArray = np.array (allVals)                  rasterArray  = valArray [:,0]         distanceArray = valArray [:,1]          pyplot.plot(distanceArray, rasterArray, 'r' )         pyplot.xlabel('Distance from Start')         pyplot.ylabel('Raster Val')

Does anyone have any workarounds that would let me display the graph while still creating it with an add-in button?