Ignore last bin size. Rebin may leave it different.

qt/applications/workbench/workbench/plotting/functions.py

@@ -202,12 +202,12 @@ def use_imshow(ws):
 
     x = ws.dataX(0)
     difference = np.diff(x)
-    if not np.all(np.isclose(difference, difference[0])):
+    if not np.all(np.isclose(difference[:-1], difference[0])):
         return False
 
     y = ws.getAxis(1).extractValues()
     difference = np.diff(y)
-    if not np.all(np.isclose(difference, difference[0])):
+    if not np.all(np.isclose(difference[:-1], difference[0])):
         return False
 
     return True