# corrRect.hclust: Draw rectangles on the correlation matrix graph. In corrplot: Visualization of a Correlation Matrix

## Description

Draw rectangles on the correlation matrix graph based on hierarchical cluster (hclust).

## Usage

 1 2 3 4 5 6 7 8 corrRect.hclust( corr, k = 2, col = "black", lwd = 2, method = c("complete", "ward", "ward.D", "ward.D2", "single", "average", "mcquitty", "median", "centroid") )

## Arguments

 corr Correlation matrix for function corrRect.hclust. It use 1-corr as dist in hierarchical clustering (hclust). k Integer, the number of rectangles drawn on the graph according to the hierarchical cluster, for function corrRect.hclust. col Color of rectangles. lwd Line width of rectangles. method Character, the agglomeration method to be used for hierarchical clustering (hclust). This should be (an unambiguous abbreviation of) one of 'ward', 'ward.D', 'ward.D2', 'single', 'complete', 'average', 'mcquitty', 'median' or 'centroid'.

Taiyun Wei

## Examples

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 data(mtcars) M = cor(mtcars) corrplot(M, order = 'FPC') -> p corrRect(p, index = c(1, 6, 11)) if(getRversion() >= '4.1.0') { corrplot(M, order = 'FPC') |> corrRect(index = c(1, 6, 11)) } (order.hc = corrMatOrder(M, order = 'hclust')) (order.hc2 = corrMatOrder(M, order = 'hclust', hclust.method = 'ward.D2')) M.hc = M[order.hc, order.hc] M.hc2 = M[order.hc2, order.hc2] par(ask = TRUE) # same as: corrplot(M, order = 'hclust', addrect = 2) corrplot(M.hc) corrRect.hclust(corr = M.hc, k = 2) # same as: corrplot(M, order = 'hclust', addrect = 3) corrplot(M.hc) corrRect.hclust(corr = M.hc, k = 3) # same as: corrplot(M, order = 'hclust', hclust.method = 'ward.D2', addrect = 2) corrplot(M.hc2) corrRect.hclust(M.hc2, k = 2, method = 'ward.D2') # same as: corrplot(M, order = 'hclust', hclust.method = 'ward.D2', addrect = 3) corrplot(M.hc2) corrRect.hclust(M.hc2, k = 3, method = 'ward.D2') # same as: corrplot(M, order = 'hclust', hclust.method = 'ward.D2', addrect = 4) corrplot(M.hc2) corrRect.hclust(M.hc2, k = 4, method = 'ward.D2')

corrplot documentation built on Nov. 18, 2021, 5:06 p.m.