EMA (version 1.4.7)

myPalette: Microarray color palette

Description

This function returns a vector of color names corresponding to a range of colors specified in the arguments.

Usage

myPalette(low = "white", high = c("green", "red"), mid=NULL, k =50)

Arguments

low

Color for the lower end of the color palette, specified using any of the three kinds of R colors, i.e., either a color name (an element of 'colors'), a hexadecimal string of the form '"#rrggbb"', or an integer 'i' meaning 'palette()[i]'.

high

Color for the upper end of the color palette, specified using any of the three kinds of R colors, i.e., either a color name (an element of 'colors'), a hexadecimal string of the form '"#rrggbb"', or an integer 'i' meaning 'palette()[i]'.

mid

Color for the middle portion of the color palette, specified using any of the three kinds of R colors, i.e., either a color name (an element of 'colors'), a hexadecimal string of the form '"#rrggbb"', or an integer 'i' meaning 'palette()[i]'.

k

Number of colors in the palette.

Value

A "character" vector of color names. This can be used to create a user-defined color palette for subsequent graphics by 'palette', in a 'col=' specification in graphics functions, or in 'par'.

Examples

# NOT RUN {
par(mfrow=c(1,4))
pal <- myPalette(low="red", high="green", mid="yellow")
image(x=1, y=1:21, z=matrix(seq(-2,2, 0.2),nrow=1),
     axes=FALSE, ylab="", xlab="", col=pal)
# }