add pattern fills to px.area

Author: nicolaskruchten

Diff for: packages/python/plotly/plotly/express/_chart_types.py

@@ -273,6 +273,7 @@ def area(
     y=None,
     line_group=None,
     color=None,
+    pattern_shape=None,
     symbol=None,
     hover_name=None,
     hover_data=None,
@@ -289,6 +290,8 @@ def area(
     labels=None,
     color_discrete_sequence=None,
     color_discrete_map=None,
+    pattern_shape_sequence=None,
+    pattern_shape_map=None,
     symbol_sequence=None,
     symbol_map=None,
     markers=False,

Diff for: packages/python/plotly/plotly/express/_core.py

@@ -223,7 +223,7 @@ def make_mapping(args, variable):
     if variable == "dash":
         arg_name = "line_dash"
         vprefix = "line_dash"
-    if variable == "pattern":
+    if variable in ["pattern", "shape"]:
         arg_name = "pattern_shape"
         vprefix = "pattern_shape"
     if args[vprefix + "_map"] == "identity":
@@ -1739,7 +1739,10 @@ def infer_config(args, constructor, trace_patch, layout_patch):
         grouped_attrs.append("marker.symbol")
 
     if "pattern_shape" in args:
-        grouped_attrs.append("marker.pattern.shape")
+        if constructor in [go.Scatter]:
+            grouped_attrs.append("fillpattern.shape")
+        else:
+            grouped_attrs.append("marker.pattern.shape")
 
     if "orientation" in args:
         has_x = args["x"] is not None

Diff for: packages/python/plotly/plotly/package_data/templates/ggplot2.json

@@ -1 +1 @@
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Diff for: packages/python/plotly/plotly/package_data/templates/gridon.json

@@ -1 +1 @@
-{"data":{"pie":[{"automargin":true,"type":"pie"}]},"layout":{"xaxis":{"showgrid":true,"title":{"standoff":15}},"yaxis":{"showgrid":true,"title":{"standoff":15}}}}
+{"layout":{"xaxis":{"showgrid":true,"title":{"standoff":15}},"yaxis":{"showgrid":true,"title":{"standoff":15}}},"data":{"pie":[{"automargin":true,"type":"pie"}]}}