Handle the edge case in matplotlib.axes.vlines, where an empty list o…

…r array is passed in as x. Previously, the vlines routine would raise an exception when min(x) was called, if x was an empty list.wq
dhyams · Jul 10, 2012 · 8f50a76 · 8f50a76
1 parent 2bb91ce
commit 8f50a76
Showing 1 changed file with 9 additions and 8 deletions.
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
@@ -3706,16 +3706,17 @@ def vlines(self, x, ymin, ymax, colors='k', linestyles='solid',
                                     linestyles=linestyles, label=label)
         self.add_collection(coll)
         coll.update(kwargs)
+
+        if len(x) > 0:
+            minx = min( x )
+            maxx = max( x )
 
-        minx = min( x )
+            miny = min( min(ymin), min(ymax) )
-        maxx = max( x )
+            maxy = max( max(ymin), max(ymax) )
 
-        miny = min( min(ymin), min(ymax) )
+            corners = (minx, miny), (maxx, maxy)
-        maxy = max( max(ymin), max(ymax) )
+            self.update_datalim(corners)
-
+            self.autoscale_view()
-        corners = (minx, miny), (maxx, maxy)
-        self.update_datalim(corners)
-        self.autoscale_view()
 
         return coll