add(icicle px): reveal icicle in plotly express

packages/python/plotly/plotly/express/__init__.py

@@ -43,6 +43,7 @@
     pie,
     sunburst,
     treemap,
+    icicle,
     funnel,
     funnel_area,
     choropleth_mapbox,
@@ -93,6 +94,7 @@
     "pie",
     "sunburst",
     "treemap",
+    "icicle",
     "funnel",
     "funnel_area",
     "imshow",

packages/python/plotly/plotly/express/_chart_types.py

@@ -200,7 +200,9 @@ def density_heatmap(
         z=[
             "For `density_heatmap` and `density_contour` these values are used as the inputs to `histfunc`.",
         ],
-        histfunc=["The arguments to this function are the values of `z`.",],
+        histfunc=[
+            "The arguments to this function are the values of `z`.",
+        ],
     ),
 )
 
@@ -451,7 +453,9 @@ def histogram(
         args=locals(),
         constructor=go.Histogram,
         trace_patch=dict(
-            histnorm=histnorm, histfunc=histfunc, cumulative=dict(enabled=cumulative),
+            histnorm=histnorm,
+            histfunc=histfunc,
+            cumulative=dict(enabled=cumulative),
         ),
         layout_patch=dict(barmode=barmode, barnorm=barnorm),
     )
@@ -511,7 +515,11 @@ def violin(
         args=locals(),
         constructor=go.Violin,
         trace_patch=dict(
-            points=points, box=dict(visible=box), scalegroup=True, x0=" ", y0=" ",
+            points=points,
+            box=dict(visible=box),
+            scalegroup=True,
+            x0=" ",
+            y0=" ",
         ),
         layout_patch=dict(violinmode=violinmode),
     )
@@ -1472,6 +1480,56 @@ def treemap(
 treemap.__doc__ = make_docstring(treemap)
 
 
+def icicle(
+    data_frame=None,
+    names=None,
+    values=None,
+    parents=None,
+    path=None,
+    ids=None,
+    color=None,
+    color_continuous_scale=None,
+    range_color=None,
+    color_continuous_midpoint=None,
+    color_discrete_sequence=None,
+    color_discrete_map=None,
+    hover_name=None,
+    hover_data=None,
+    custom_data=None,
+    labels=None,
+    title=None,
+    template=None,
+    width=None,
+    height=None,
+    branchvalues=None,
+    maxdepth=None,
+):
+    """
+    An icicle plot represents hierarchial data with adjoined rectangular
+    sectors that all cascade from root down to leaf in one direction.
+    """
+    if color_discrete_sequence is not None:
+        layout_patch = {"iciclecolorway": color_discrete_sequence}
+    else:
+        layout_patch = {}
+    if path is not None and (ids is not None or parents is not None):
+        raise ValueError(
+            "Either `path` should be provided, or `ids` and `parents`."
+            "These parameters are mutually exclusive and cannot be passed together."
+        )
+    if path is not None and branchvalues is None:
+        branchvalues = "total"
+    return make_figure(
+        args=locals(),
+        constructor=go.Icicle,
+        trace_patch=dict(branchvalues=branchvalues, maxdepth=maxdepth),
+        layout_patch=layout_patch,
+    )
+
+
+icicle.__doc__ = make_docstring(icicle)
+
+
 def funnel(
     data_frame=None,
     x=None,

packages/python/plotly/plotly/express/_core.py

@@ -428,6 +428,7 @@ def make_trace_kwargs(args, trace_spec, trace_data, mapping_labels, sizeref):
                 elif trace_spec.constructor in [
                     go.Sunburst,
                     go.Treemap,
+                    go.Icicle,
                     go.Pie,
                     go.Funnelarea,
                 ]:
@@ -480,6 +481,7 @@ def make_trace_kwargs(args, trace_spec, trace_data, mapping_labels, sizeref):
                 if trace_spec.constructor in [
                     go.Sunburst,
                     go.Treemap,
+                    go.Icicle,
                     go.Pie,
                     go.Funnelarea,
                 ]:
@@ -1497,7 +1499,7 @@ def _check_dataframe_all_leaves(df):
 
 def process_dataframe_hierarchy(args):
     """
-    Build dataframe for sunburst or treemap when the path argument is provided.
+    Build dataframe for sunburst, treemap, or icicle when the path argument is provided.
     """
     df = args["data_frame"]
     path = args["path"][::-1]
@@ -1663,7 +1665,7 @@ def infer_config(args, constructor, trace_patch, layout_patch):
                 if args["color"] and _is_continuous(args["data_frame"], args["color"]):
                     attrs.append("color")
                     args["color_is_continuous"] = True
-                elif constructor in [go.Sunburst, go.Treemap]:
+                elif constructor in [go.Sunburst, go.Treemap, go.Icicle]:
                     attrs.append("color")
                     args["color_is_continuous"] = False
                 else:
@@ -1684,7 +1686,7 @@ def infer_config(args, constructor, trace_patch, layout_patch):
             and args["color"]
             and constructor not in [go.Pie, go.Funnelarea]
             and (
-                constructor not in [go.Treemap, go.Sunburst]
+                constructor not in [go.Treemap, go.Sunburst, go.Icicle]
                 or args.get("color_is_continuous")
             )
         )
@@ -1856,7 +1858,7 @@ def make_figure(args, constructor, trace_patch=None, layout_patch=None):
     apply_default_cascade(args)
 
     args = build_dataframe(args, constructor)
-    if constructor in [go.Treemap, go.Sunburst] and args["path"] is not None:
+    if constructor in [go.Treemap, go.Sunburst, go.Icicle] and args["path"] is not None:
         args = process_dataframe_hierarchy(args)
     if constructor == "timeline":
         constructor = go.Bar
@@ -1928,6 +1930,7 @@ def make_figure(args, constructor, trace_patch=None, layout_patch=None):
                 go.Histogram2d,
                 go.Sunburst,
                 go.Treemap,
+                go.Icicle,
             ]:
                 trace.update(
                     legendgroup=trace_name,