[R] rotating points on a plot

Greg Snow Greg.Snow at imail.org
Tue Oct 14 04:26:59 CEST 2008

I don't think that you can do this with points (though I would be happy to be proven wrong), but you could look at the my.symbols function in the TeachingDemos package.  You need to create a function to plot the symbol that you want with the rotation that you want, but then you can use it to place the symbols/points on the plot with the desired rotation, see also the ms.polygram and ms.polygon functions for examples that include a possible rotation (adj argument).

Hope this helps,

From: r-help-bounces at r-project.org [r-help-bounces at r-project.org] On Behalf Of Richard E. Glor [rglor at mail.rochester.edu]
Sent: Monday, October 13, 2008 3:19 PM
To: r-help at r-project.org
Subject: [R] rotating points on a plot

Anybody know how to rotate shapes generated with the 'points'
function?  I'm trying to place points around a radial diagram such
that the y-axis of individual shapes are oriented with the radii of
the circle rather than the y-axis of the larger plot area.  Perhaps
something analogous to the 'srt' and 'crt' functions for text that
appear under 'par'?


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