Decorate Heatmap Dimension Names

Decorate Heatmap Dimension Names

decorate_dimnames(heatmap, code, slice = 1, which = c("column", "row"),
    envir = new.env(parent = parent.frame()))

Arguments

heatmap	Name of the heatmap.
code	Code that adds graphics in the selected viewport.
slice	Index of the row slice or column slice in the heatmap.
which	on rows or on columns?
envir	where to look for variables inside code.

Details

If you know the dimensions of the matrix, it is simple to calculate the position of every row name or column name in the heatmap. E.g., for the column column, the i^th name is located at:

    # assume nc is the number of columns in the column slice
    unit((i-0.5)/nc, "npc")  

Value

The function returns no value.

Examples

set.seed(123)
mat = matrix(rnorm(100), 10)
rownames(mat) = letters[1:10]
colnames(mat) = LETTERS[1:10]
Heatmap(mat, name = "mat", km = 2)

decorate_dimnames("mat", {
    grid.rect(gp = gpar(fill = "#FF000080"))
}, which = "row", slice = 2)