[R] determining the order in which points are plotted
dwinsemius at comcast.net
Tue Jan 25 01:15:39 CET 2011
On Jan 24, 2011, at 6:49 PM, Mike Miller wrote:
> I make plenty of scatterplots, especially using scatterplot.matrix
> from library(car). One thing I don't know how to do is determine
> which points are plotted last. Sometimes I plot a large number of
> points for multiple groups represented by different colors.
> I would like to guarantee that point that are far from the centroid
> for their group are plotted last. This way they will be visible
> because they won't be buried under a pile of points from another
> As it stands, it looks like scatterplot.matrix (and maybe other
> plotting functions) lay down a group at a time, in order, so that
> the first group is most likely to be buried under later groups. I
> try to sort factor levels so that the biggest groups go first, and
> that helps a little, but it isn't the complete solution I'm looking
> Thanks in advance.
> Michael B. Miller, Ph.D.
> Minnesota Center for Twin and Family Research
> Department of Psychology
> University of Minnesota
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
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