HierarchicalClustering`

TruncateDendrogram

is an option for DendrogramPlot that specifies the fusion levels at which to truncate the dendrogram.

Details and Options

To use TruncateDendrogram, you first need to load the Hierarchical Clustering Package using Needs["HierarchicalClustering`"].
Valid settings are All, positive integers, or a list of two positive integers. The integers should be no larger than the number of clusters. With the default setting All, no truncation is performed.
The setting TruncateDendrogram->n truncates clusters with the smallest fusion levels so that n leaves remain.
The setting TruncateDendrogram->{m,n} will display only the m through n fusion levels.

Dendrogram truncated such that four leaves remain:

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