plotAddLegend: Add Legend to a Plot

In MorphoTools2: Multivariate Morphometric Analysis

Add Legend to a Plot

Description

This function can be used to add legend to plot.

Usage

plotAddLegend(result, x = "topright", y = NULL, pch = 16, col = "black",
    pt.bg = "white", pt.cex = cex, pt.lwd = 1, x.intersp = 1,
    y.intersp = 1, box.type = "o", box.lty = "solid", box.lwd = 1,
    box.col = "black", box.bg = "white", cex = 1, ncol = 1, horiz = FALSE, ...)

Arguments

result	result of pca.calc, pcoa.calc, nmds.calc, or cda.calc, has to by plotted at first.
x, y	the x and y coordinates or a single keyword from the list "bottomright", "bottom", "bottomleft", "left", "topleft", "top", "topright", "right", and "center", to be used to position the legend.
pch	the plotting symbols of points appearing in the legend.
col	the colours of points appearing in the legend.
pt.bg	the background colour for the points, corresponding to its argument bg.
pt.cex	character expansion factor for the points.
pt.lwd	the line width for the points.
x.intersp, y.intersp	character interspacing factor for horizontal (x) and vertical (y) line distances.
box.type	the type of box to be drawn around the legend. The applicable values are "o" (the default) and "n".
box.lty, box.lwd, box.col, box.bg	the line type, width colour and background colour for the legend box (if box.type = "o").
cex	character expansion factor for text.
ncol	the number of columns in which to set the legend item.
horiz	logical; if TRUE, set the legend horizontally rather than vertically (specifying horiz overrides the ncol specification).
...	further arguments to be passed to legend or other graphical parameters in par.

Value

None. Used for its side effect of adding elements to a plot.

Examples

data(centaurea)
centaurea = naMeanSubst(centaurea)
centaurea = removePopulation(centaurea, populationName = c("LIP", "PREL"))

pcaRes = pca.calc(centaurea)

plotPoints(pcaRes, col = c("red", "green", "blue", "red"),
            pch = c(20, 17, 8, 21), pt.bg = "orange", legend = FALSE)

plotAddLegend(pcaRes, x = "bottomright", col = c("red", "green", "blue", "red"),
               pch = c(20, 17, 8, 21), pt.bg = "orange", ncol = 2)

MorphoTools2 documentation built on March 7, 2023, 6:18 p.m.