scale_size {ggplot2} | R Documentation |
Size scale.
scale_size_continuous(..., range = c(1, 6)) scale_size(..., range = c(1, 6)) scale_size_discrete(..., range = c(1, 6))
range |
a numeric vector of length 2 that specifies the minimum and maximum size of the plotting symbol after transformation. |
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common continuous scale parameters:
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(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))