[R] selecting a group of points from a scatterplot?

[J.delasHeras at ed.ac.uk]

Hi everyone,

is there a way/package in R that would allow me to select a group of  
points from a scatterplot by drawing a circle around them or some such?

I can use 'identify' to pick individual points, but that gets tedious  
if one has more than 10-20 spots.
I can easily select spots within a rectangle defined by picking points  
using identify... but a simple rectangle sometimes will force me to  
pick points that I want to leave out.

Many graph plotting programs allow you to pick a group of points  
directly from the graph by circling them with teh mouse cursor. Is  
that soemthing that I can do in R?

Thanks!

Jose

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Dr. Jose I. de las Heras                      Email: J.delasHeras at ed.ac.uk
The Wellcome Trust Centre for Cell Biology    Phone: +44 (0)131 6513374
Institute for Cell & Molecular Biology        Fax:   +44 (0)131 6507360
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