Latest Contributions by JamesCrandall

Ok I'm a newbie in this area so I need to understand how exceptions are raised... Below is my Add-in code which is essentially the example for a button on a toolbar in the ArcGIS 10.1 Python wizard help. I've added the error handling..... So the problem is that nothing happens - the button does not work but neither are there any exceptions raised... So what am I doing wrong? The add-in toolbar appears in the project, the button is enabled but no exceptions appear in the python window and I have no indication the code is executing. import arcpy import pythonaddins class ButtonClass11(object):     """Implementation for test_addin.button (Button)"""     def __init__(self):         self.enabled = True         self.checked = False try: # Implementation of OnClick method of Button's class     def onClick(self):         # Get the current map document and the first data frame.         mxd = arcpy.mapping.MapDocument('current')         df = arcpy.mapping.ListDataFrames(mxd)[0]         # Call the zoomToSelectedFeatures() method of the data frame class         df.zoomToSelectedFeatures()     pass except Exception, e:     traceback.print_exc() Maybe a dumb question, but do you have any features selected when you click the button? You can also put a print statement before and after the line you expect to 'do stuff'.  In the code above, you can test the zoomToSelectedFeatures method like so, print "...attempting to run zoomToSelected" # Call the zoomToSelectedFeatures() method of the data frame class df.zoomToSelectedFeatures() print "...finished running zoomToSelected" This will output the two statements in the Python window when you click the add-in button.  Just a quick and dirty way to debug. ... View more