wordlayout: Word Layout

In wordcloud: Word Clouds

Description

finds text plot layout coordinates such that no text overlaps

Usage

wordlayout(x, y, words, cex=1, rotate90 = FALSE,
		xlim=c(-Inf,Inf), ylim=c(-Inf,Inf), tstep=.1, rstep=.1, ...)

Arguments

x	x coordinates
y	y coordinates
words	the text to plot
cex	font size
rotate90	a value or vector indicating whether words should be rotated 90 degrees
xlim	x axis bounds for text
ylim	y axis bounds for text
tstep	the angle (theta) step size as the algorithm spirals out
rstep	the radius step size (in standard deviations) as the algorithm spirals out
...	Additional parameters to be passed to strwidth and strheight.

Value

A matrix with columns representing x, y width and height.

Examples

#calculate standardized MDS coordinates
dat <- sweep(USArrests,2,colMeans(USArrests))
dat <- sweep(dat,2,sqrt(diag(var(dat))),"/")
loc <- cmdscale(dist(dat))
x <- loc[,1]
y <- loc[,2]
w <- rownames(loc)

#plot with no overlap and all words visible
plot(x,y,type="n",xlim=c(-3,3),ylim=c(-3,2))
lay <- wordlayout(x,y,w,xlim=c(-3,3),ylim=c(-3,2))
text(lay[,1]+.5*lay[,3],lay[,2]+.5*lay[,4],w)

#notice north dakota is only partially visible
textplot(x,y,w)

wordcloud documentation built on May 1, 2019, 8:47 p.m.