vipor: tukeyTexture – R documentation

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tukeyTexture

Generate random positions based on Tukey texture algorithm

Description

Generate partly random, partly constrained lateral displacements based on Tukey texture algorithm from Tukey and Tukey 1990

Usage

tukeyTexture(x, jitter = TRUE, thin = FALSE, hollow = FALSE,
  delta = diff(stats::quantile(x, c(0.25, 0.75))) * 0.03)

Arguments

`x`	the points to be jittered. really only used to calculate length
`jitter`	if TRUE add random jitter to each point
`thin`	if TRUE then push points to the center in thin regions
`hollow`	if TRUE then expand points outward to avoid “hollowness”
`delta`	a “reasonably small value” used in edge straightening and thinning

Value

a vector of length length(x) giving displacements for each corresponding point in x

Examples

x<-rnorm(200)
plot(tukeyTexture(x),x)
x<-1:100
plot(tukeyTexture(x),x)
plot(tukeyTexture(log10(counties$landArea),TRUE,TRUE),log10(counties$landArea),cex=.25)

vipor

Plot Categorical Data Using Quasirandom Noise and Density Estimates

v0.4.5

GPL (>= 2)

Authors

Scott Sherrill-Mix, Erik Clarke

Initial release

2017-03-22