| sizeplot {plotrix} | R Documentation |
Plot with repeated symbols by size
Description
Plots a set of (x,y) data with repeated points denoted by larger symbol sizes
Usage
sizeplot(x, y, scale=1, pow=0.5, powscale=TRUE, size=c(1,4), add=FALSE, ...)
Arguments
x |
x coordinates of data |
y |
y coordinates of data |
scale |
scaling factor for size of symbols |
pow |
power exponent for size of symbols |
powscale |
(logical) use power scaling for symbol size? |
size |
(numeric vector) min and max size for scaling, if powscale=FALSE |
add |
(logical) add to an existing plot? |
... |
other arguments to ‘plot()’ or ‘points()’ |
Details
Most useful for plotting (e.g.) discrete data, where repeats are
likely. If all points are repeated equally, gives a warning. The
size of a point is given by scale*n^pow, where n is the number of
repeats, if powscale is TRUE, or it is scaled between size[1] and size[2],
if powscale is FALSE.
Value
A plot is produced on the current device, or points are added to the current plot if ‘add=TRUE’.
Author(s)
Ben Bolker
See Also
Examples
x <- c(0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.3,0.3)
y <- c( 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 5 )
plot(x,y)
sizeplot(x,y)
sizeplot(x,y,pch=2)