factor2color {condvis} | R Documentation |
Assign colours to factor vector
Description
This function takes a factor vector and returns suitable colours
representing the factor levels. Default is to try to use
RColorBrewer
for colours, and rainbow
otherwise. Can
provide custom colours.
Usage
factor2color(x, colors = NULL)
Arguments
x |
A factor vector. |
colors |
The colours to use. Defaults to a qualitative colour scheme;
either |
Details
Uses the RColorBrewer
package if installed. Coerces x
to factor with a warning.
Value
A character vector of colours.
See Also
Examples
plot(iris[, c("Petal.Length", "Petal.Width")], pch = 21,
bg = factor2color(iris$Species))
legend("topleft", legend = levels(iris$Species),
fill = factor2color(as.factor(levels(iris$Species))))
[Package condvis version 0.5-1 Index]