snapshot...

modules/util/plot.py

@@ -298,6 +298,8 @@ def scatter_density(x, y, color=None, fname=None, fig=None):
     ax = fig.add_subplot(1, 1, 1, projection='scatter_density')
     if color is not None:
         ax.scatter_density(x, y, color=color)
+    else:
+        ax.scatter_density(x, y)
 
     if fname is not None:
         fig.savefig(fname)