[bugsearch] trying to fix UnpicklingError by clearing GUI element containing attributes

pylot/core/active/activeSeismoPick.py

@@ -2,6 +2,7 @@
 import sys
 import numpy as np
 from pylot.core.active import seismicshot
+from pylot.core.active.surveyUtils import cleanUp
 
 class Survey(object):
     def __init__(self, path, sourcefile, receiverfile, useDefaultParas = False):
@@ -428,6 +429,7 @@ class Survey(object):
 
     def saveSurvey(self, filename = 'survey.pickle'):
         import cPickle
+        cleanUp(self)
         outfile = open(filename, 'wb')
 
         cPickle.dump(self, outfile, -1)

pylot/core/active/seismicshot.py

@@ -631,6 +631,9 @@ class SeismicShot(object):
             cid = fig.canvas.mpl_connect('button_press_event', onclick)
             self.traces4plot[traceID]['cid'] = cid
 
+        def cleanup(event):
+            self.traces4plot[traceID] = {}
+
         fig = plt.figure()
         ax1 = fig.add_subplot(2,1,1)
         ax2 = fig.add_subplot(2,1,2, sharex = ax1)
@@ -640,18 +643,10 @@ class SeismicShot(object):
         button1.on_clicked(connectButton)
         button2 = Button(axb2, 'delete', color = 'green', hovercolor = 'grey')
         button2.on_clicked(rmPick)
+        fig.canvas.mpl_connect('close_event', cleanup)
 
-        if traceID not in self.traces4plot.keys():
-            self.traces4plot[traceID] = {}
-
-        self.traces4plot[traceID] = {'fig': fig,
-                                     'ax1': ax1,
-                                     'ax2': ax2,
-                                     'axb1': axb1,
-                                     'axb2': axb2,
-                                     'button1': button1,
-                                     'button2': button2,
-                                     'cid': None}
+        self.traces4plot[traceID] = dict(fig=fig, ax1=ax1, ax2=ax2, axb1=axb1, axb2=axb2, button1=button1,
+                                         button2=button2, cid=None)
 
         self._drawStream(traceID)
         self._drawCFs(traceID, folm)

pylot/core/active/surveyUtils.py

@@ -86,3 +86,8 @@ def findTracesInRanges(shot_dict, distancebin, pickbin):
                     shots_found[shot.getShotnumber()].append(traceID)
 
     return shots_found
+
+def cleanUp(survey):
+
+    for shot in survey.data.values():
+        shot.traces4plot = {}