corrRect.hclust {corrplot} R Documentation

## Draw rectangles on the correlation matrix graph.

### Description

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

### Usage

```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

```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]

# 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')
```

[Package corrplot version 0.90 Index]