[R] How do you distinguish between characters on a pco plot?

Sarah Goslee sarah.goslee at gmail.com
Tue Apr 3 19:02:45 CEST 2012

You can pass a vector of colors to the col= argument,
col=c(1, 1, 2, 3, 2, 1)
to match your parameters. Or, in your case,
c(rep("blue", 3), rep("red", 4), rep(2, "green"))
- untested because you didn't provide an example.

You should read ?par and ?plot

Unless you're using lattice graphics, but you don't tell us.


On Tue, Apr 3, 2012 at 12:39 PM, leannehaggerty
<leannehaggerty at gmail.com> wrote:
> I've read everything I can find, maybe I'm just missing something but I can't
> find an example which colours the points on a pco plot differently based on
> user specified parameters, I can colour every point differently or all the
> same, or randomly with a number of colours.
> What I need to do is specify that points a, b and c, for example will be
> blue, while points d, e, f, and g will be red and points h and i will be
> green. Is it possible to colour with uneven distribution, I suppose is my
> question? I can't find a solution in any manual.
> --
Sarah Goslee

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