Showing only some clusters

The subtrees parameter can be specified as only a subset of clusters, i.e., their union does not necessarily cover all data points.

import plotly.graph_objects as go
import plotly.io as pio
import scipy

from pdendro import attach_dendrogram

X = [[0.0], [1.0], [3.0], [6.0]]
Z = scipy.cluster.hierarchy.linkage(X)

fig = go.Figure()
attach_dendrogram(fig, Z, subtrees={4})
pio.show(fig)