colorQual: Assign colors to nominal values
In dkneis/diatools: Utilities for Diagenetic Modeling

Description Usage Arguments Value Author(s) Examples

Associates nominal values with a set of colors.

1	colorQual(x, classes, colors, warn = TRUE, NAcolor = "transparent")

`x`	Vector of character strings.
`classes`	Vector of character strings defining the class names. Typically, this would be `unique(x)`.
`colors`	Vector of colors corresponding to `classes`.
`warn`	Warn if `x` contains elements not present in `classes`?
`NAcolor`	Color used for `x` values not present in `classes`.

A vector of colors of the same length as x.

David Kneis david.kneis@tu-dresden.de

classes=c("A","B","C")
colors=c("red","blue","green")
x= runif(1000) * 100
y= runif(length(x)) * 100
z= rep("A", length(x))
z[x*y > 50] = "B"
z[x*y > 500] = "C"
z[x*y > 5000] = "D"
plot(x, y, col=colorQual(z, classes, colors, NAcolor="grey"))
legend("topright", bg="white", pch=1, col=colors, legend=classes)