[R] custom point shapes
ba208 at exeter.ac.uk
Fri Jul 20 09:42:10 CEST 2007
I'm new to R, but a search through the list didn't quite solve this
problem: I want to draw a few ellipses (or any custom shape for that
matter) at given locations in a graph. I know how to plot points from
my data, set the point type "pch" to any built in value, but I do not
know how to specify a custom shape.
A search for drawing ellipses gave me functions to plot one at a
given location, possibly using some dataset but only to display a
confidence interval or other convex hull. Nothing to use as pch.
Say I have this data:
I would like to plot (x,y) with some ellipses of custom aspect ratio
for every point.
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