Fix plotly#2316

tvaucher · Mar 26, 2020 · 6cff652 · 6cff652
1 parent 3304cbd
commit 6cff652
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/packages/python/plotly/plotly/express/_core.py b/packages/python/plotly/plotly/express/_core.py
@@ -1278,6 +1278,8 @@ def infer_config(args, constructor, trace_patch):
         if args["opacity"] is None:
             if "barmode" in args and args["barmode"] == "overlay":
                 trace_patch["marker"] = dict(opacity=0.5)
+        elif constructor == go.Densitymapbox:
+            trace_patch["opacity"] = args["opacity"]
         else:
             trace_patch["marker"] = dict(opacity=args["opacity"])
     if "line_group" in args: