R: Draw a color-coded triangular matrix

trianglegram {squash}

R Documentation

Draw a color-coded triangular matrix

Description

This function is called by distogram, and probably isn't very useful by itself.

Usage

trianglegram(x, labels = rownames(x), 
    lower = TRUE, diag = FALSE, right = FALSE, 
    add = FALSE, xpos = 0, ypos = 0, xlim, ylim, ...)

Arguments

`x`	A square matrix containing color values.
`labels`	Labels.
`lower`	If TRUE, use `lower.tri`, else use `upper.tri`.
`diag`	Include the diagonal elements of `x`?
`right`	Should triangle point to the right or left?
`add`	Add to an existing plot?
`xpos, ypos`	Location of bottom point of the triangle.
`xlim, ylim`	Plotting limits.
`...`	Further arguments passed to `plot`.

Details

The input must be a (square) matrix; however, only part of the matrix (the upper or lower triangle) is displayed.

Value

none.

Examples

 
  m <- matrix(jet(40), nrow = 20, ncol = 20)
  trianglegram(m)

  ## just for fun
  trianglegram(m, labels = NA, right = TRUE, add = TRUE, xpos = 1)

[Package squash version 1.0.8 Index]