R: Word Layout

wordlayout {wordcloud} | R Documentation

## Word Layout

### 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)

[Package wordcloud version 2.6 Index]