scsize: Scale: size Linearly map size to a variable.

In hadley/ggplot1: Before there was ggplot2

Description

The mapping between size and the original variable value is not linear, but square rooted. This is because the human brain tends to percieve area rather than radius.

Usage

scsize(plot, name = "", to = c(0.8, 5))

Arguments

plot	plot
name	namen of the scale (used in the legend)
to	size range in mm (numeric vector, length 2)

Details

You can manipulate the range of the result by modifying the to argument.

Examples

p <- ggplot(mtcars, aes=list(x=mpg, y=hp))
ggpoint(p)
ggpoint(p, list(size=wt))
scsize(ggpoint(p, list(size=wt)), c(1,10))
scsize(ggpoint(p, list(size=sqrt(wt))), c(1,5))

hadley/ggplot1 documentation built on Aug. 19, 2019, 2:42 p.m.