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Add support for truncate_mode to figure factory dendrogram #3795

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Add support for truncate_mode to figure factory dendrogram #3795

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31 changes: 28 additions & 3 deletions packages/python/plotly/plotly/figure_factory/_dendrogram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,13 @@ def create_dendrogram(
colorscale=None,
distfun=None,
linkagefun=lambda x: sch.linkage(x, "complete"),
truncate_mode=None,
hovertext=None,
color_threshold=None,
show_leaf_counts=None,
show_contracted=None,
leaf_rotation=None,
leaf_font_size=None
):
"""
Function that returns a dendrogram Plotly figure object. This is a thin
Expand Down Expand Up @@ -59,7 +64,7 @@ def create_dendrogram(
>>> fig.show()

Example 2: Dendrogram to put on the left of the heatmap

>>> from plotly.figure_factory import create_dendrogram

>>> import numpy as np
Expand All @@ -71,7 +76,7 @@ def create_dendrogram(
>>> dendro.show()

Example 3: Dendrogram with Pandas

>>> from plotly.figure_factory import create_dendrogram

>>> import numpy as np
Expand Down Expand Up @@ -104,6 +109,11 @@ def create_dendrogram(
linkagefun=linkagefun,
hovertext=hovertext,
color_threshold=color_threshold,
truncate_mode=truncate_mode,
show_leaf_counts=show_leaf_counts,
show_contracted=show_contracted,
leaf_rotation=leaf_rotation,
leaf_font_size=leaf_font_size
)

return graph_objs.Figure(data=dendrogram.data, layout=dendrogram.layout)
Expand All @@ -126,6 +136,11 @@ def __init__(
linkagefun=lambda x: sch.linkage(x, "complete"),
hovertext=None,
color_threshold=None,
truncate_mode=None,
show_leaf_counts=None,
show_contracted=None,
leaf_rotation=None,
leaf_font_size=None
):
self.orientation = orientation
self.labels = labels
Expand All @@ -135,6 +150,11 @@ def __init__(
self.leaves = []
self.sign = {self.xaxis: 1, self.yaxis: 1}
self.layout = {self.xaxis: {}, self.yaxis: {}}
self.truncate_mode = truncate_mode
self.show_leaf_counts= show_leaf_counts
self.show_contracted= show_contracted
self.leaf_rotation= leaf_rotation
self.leaf_font_size = leaf_font_size

if self.orientation in ["left", "bottom"]:
self.sign[self.xaxis] = 1
Expand Down Expand Up @@ -271,7 +291,7 @@ def set_axis_layout(self, axis_key):
"ticks": "outside",
"mirror": "allticks",
"rangemode": "tozero",
"showticklabels": True,
"showticklabels": False if self.truncate_mode != None else True,
"zeroline": False,
"showgrid": False,
"showline": True,
Expand Down Expand Up @@ -344,7 +364,12 @@ def get_dendrogram_traces(
orientation=self.orientation,
labels=self.labels,
no_plot=True,
truncate_mode=self.truncate_mode,
color_threshold=color_threshold,
show_leaf_counts=self.show_leaf_counts,
show_contracted=self.show_contracted,
leaf_rotation=self.leaf_rotation,
leaf_font_size=self.leaf_font_size
)

icoord = scp.array(P["icoord"])
Expand Down