cal_length: Recursive function to calculate the length of branches

In dendsort: Modular Leaf Ordering Methods for Dendrogram Nodes

Description

cal_length is a code modified from plotNode() to calculate the length of lines to draw the branch of a dendrogram. This function was developed to evaluate the use of ink for visualization.

Usage

cal_length(x1, x2, subtree, center, nodePar, edgePar, horiz = FALSE, sum)

Arguments

x1	A x coordinatex1
x2	Another x coordinatex2
subtree	A dendrogram object.subtree
center	A logical whether the dendrogram is centered.center
nodePar	A node parameter.nodePar
edgePar	An edge parameter.edgePar
horiz	A logical about layout.horiz
sum	A sum of length.sum

Value

output The length.

Examples

#generate sample data
set.seed(1234); par(mar=c(0,0,0,0))
x <- rnorm(10, mean=rep(1:5, each=2), sd=0.4)
y <- rnorm(10, mean=rep(c(1,2), each=5), sd=0.4)
dataFrame <- data.frame(x=x, y=y, row.names=c(1:10))
#calculate Euclidian distance
distxy <- dist(dataFrame)
#hierachical clustering "complete" linkage by default
hc <- hclust(distxy)

total_length <- cal_total_length(as.dendrogram(hc))

dendsort documentation built on April 20, 2021, 5:05 p.m.