Update runRubbersheetAzimuth.py

Add "from scipy import ndimage"

components/isceobj/StripmapProc/runRubbersheetAzimuth.py

@@ -104,6 +104,8 @@ def fill(data, invalid=None):
     Output:
         Return a filled array.
     """
+    from scipy import ndimage
+
     if invalid is None: invalid = np.isnan(data)
 
     ind = ndimage.distance_transform_edt(invalid,
@@ -279,5 +281,3 @@ def runRubbersheetAzimuth(self):
     resampleOffset(filtAzOffsetFile, geometryAzimuthOffset, sheetOffset)
 
     return None
-
-