x-y scatterplot, colored by levels of a factor.

Usage

plotbyfactor(x, y, f, data, col, pch, add, lg, ...)

Arguments

x Variable for x axis.
x Variable for y axis.
f Factor (or variable for which as.factor() works).
data data frame for variables x, y, f. Default: sys.parent().
col Color numbers to use in plot. Will be replicated if shorter than the number of levels of the factor f. Default: 1:10.
pch Vector of plot characters. Replicated if necessary. Default: "O".
add If TRUE, add to existing plot. Otherwise, create new plot. Default: FALSE.
lg Coordinates to place a legend. Default: Missing (no legend).
... Other graphical parameters, labels, titles e.t.c.

Examples

> plotbyfactor(petal.wid,petal.len,species,data=iris)


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