ggplot2 (version 0.9.1)

scale_size_continuous: Size scale.

Description

Size scale.

Usage

scale_size_continuous(..., range = c(1, 6))
  scale_size(..., range = c(1, 6))
  scale_size_discrete(..., range = c(1, 6))

Arguments

range

a numeric vector of length 2 that specifies the minimum and maximum size of the plotting symbol after transformation.

...

common continuous scale parameters: name, breaks, labels, na.value, limits and trans. See continuous_scale for m

Examples

(p <- qplot(mpg, cyl, data=mtcars, size=cyl))
p + scale_size("cylinders")
p + scale_size("number\nof\ncylinders")

p + scale_size(range = c(0, 10))
p + scale_size(range = c(1, 2))

# Map area, instead of width/radius
# Perceptually, this is a little better
p + scale_area()
p + scale_area(range = c(1, 25))

# Also works with factors, but not a terribly good
# idea, unless your factor is ordered, as in this example
qplot(mpg, cyl, data=mtcars, size=factor(cyl))

# To control the size mapping for discrete variable, use
# scale_size_manual:
last_plot() + scale_size_manual(values=c(2,4,6))