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

Usage:


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

Description:

Produces a scatter plot of x-y data, with different classes given by a factor f. The different classes are identified by different colours and/or symbols.

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:


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

Key Words:

locfit
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