Remove duplicate arrow_len declaration.

theengineear · theengineear · commit 03216fabba25 · 2015-10-02T22:06:42.000+07:00
diff --git a/plotly/graph_objs/figure_factory.py b/plotly/graph_objs/figure_factory.py
@@ -1198,7 +1198,6 @@ def get_quiver_arrows(self):
             barb_len[index] = math.hypot(dif_x[index], dif_y[index])
 
         # Make arrow lengths
-        arrow_len = [None] * len(self.x)
         arrow_len = [i * self.arrow_scale for i in barb_len]
 
         # Get barb angles
