[R] Adding polygons to a barplot
cobleigh at gmail.com
Thu Mar 9 02:09:02 CET 2006
Thanks! That worked.
On 3/8/06, Marc Schwartz (via MN) <mschwartz at mn.rr.com> wrote:
> On Wed, 2006-03-08 at 14:02 -0500, Jamieson Cobleigh wrote:
> > I have a barplot I have created using barplot2 and I have been able to
> > add points and lines (using the points and lines methods,
> > respectively). I now need to add some polygons (triangles in
> > particular), that I want to be shaded to match bars in the plot. I
> > can get the coordinates of the corners of the triangles, but don't
> > know how to draw the triangles. I know there is the grid.polygon
> > method, but I don't know how to get it to draw on my plot. Any help
> > would be appreciated.
> > Thanks!
> > Jamie
> There is a polygon() function in base R graphics. It supports a
> 'density' argument in the same fashion as barplot()/barplot2().
> See ?polygon
> help.search("polygon") would have gotten you there.
> Marc Schwartz
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