BUG: fixing issue #5531

perimosocordiae · mdboom · commit 57fb822719a7 · 2015-12-09T21:18:04.000-05:00
diff --git a/lib/mpl_toolkits/mplot3d/axes3d.py b/lib/mpl_toolkits/mplot3d/axes3d.py
@@ -2608,7 +2608,7 @@ def calc_arrow(uvw, angle=15):
         norm = np.sqrt(np.sum(UVW**2, axis=1))
 
         # If any row of UVW is all zeros, don't make a quiver for it
-        mask = norm > 1e-10
+        mask = norm > 0
         XYZ = XYZ[mask]
         if normalize:
             UVW = UVW[mask] / norm[mask].reshape((-1, 1))
