[R] Color points in princomp() plot

David Winsemius dwinsemius at comcast.net
Tue Apr 29 00:40:23 CEST 2014

On Apr 28, 2014, at 2:41 PM, Noah Silverman wrote:

> Hi,
> The princomp() function has a nice method to generate a pretty biplot of
> the data.  I have some data where the points are divided into a few
> groups.  My intention is to generate a biplot, using princomp, but color
> the points based on group membership.  The hope is that points will show
> some kind of clustering by group in the biplot.
> However, I can't figure out how to indicate individual point color in a
> biplot.  The only setting I found was to indicate a single color for
> *all* the points.
> Any ideas?

Offer some code?

The help page says you can provide a vector for coloring sets of points.

> 	[[alternative HTML version deleted]]

And when you do offer code it should be with plain text format.

David Winsemius
Alameda, CA, USA

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