dendextend (version 1.8.0)

intersect_trees: Intersect trees

Description

Return two trees after pruning them so that the only leaves left are the intersection of their labels.

Usage

intersect_trees(dend1, dend2, warn = dendextend_options("warn"), ...)

Arguments

dend1

tree object (dendrogram/hclust/phylo)

dend2

tree object (dendrogram/hclust/phylo)

warn

logical (default from dendextend_options("warn") is FALSE). Set if warning are to be issued, it is safer to keep this at TRUE, but for keeping the noise down, the default is FALSE. Should a warning be issued if there was a need to perform intersaction.

...

passed on

Value

A dendlist with two pruned trees

See Also

prune, intersect, labels

Examples

Run this code
# NOT RUN {
hc <- hclust(dist(USArrests[1:5,]), "ave")
dend <- as.dendrogram(hc)
labels(dend) <- 1:5
dend1 <- prune(dend, 1)
dend2 <- prune(dend, 5)
intersect_dend <- intersect_trees(dend1, dend2)

layout(matrix(c(1,1,2,3,4,5), 3,2, byrow=TRUE))
plot(dend, main = "Original tree")
plot(dend1, main = "Tree 1:\n original with label 1 pruned");
   plot(dend2, main = "Tree 2:\n original with label 2 pruned")
plot(intersect_dend[[1]], 
      main = "Tree 1 pruned
      with the labels that intersected with those of Tree 2")
   plot(intersect_dend[[2]],
      main = "Tree 2 pruned
      with the labels that intersected with those of Tree 1")

# }

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