Merge pull request #554 from plotly/trisurf-lists-to-arrays

force facecolor to be an array, NOT a list

Author: Kully

plotly/tools.py

@@ -3338,7 +3338,7 @@ def _trisurf(x, y, z, simplices, show_colorbar, edges_color,
                 facecolor.append(color)
 
         # Make sure facecolor is a list so output is consistent across Pythons
-        facecolor = list(facecolor)
+        facecolor = np.asarray(facecolor)
         ii, jj, kk = simplices.T
 
         triangles = graph_objs.Mesh3d(x=x, y=y, z=z, facecolor=facecolor,