Dear all,

I need to run a interactive procedure where the user
will need click on the screen (over a XY plot)
and I need to record the XY coordinate which the
user clicked. Roughly I wrote a short code below.
You see that I suppose that the user will choose
four coordinates inside the region of intersection
between three segmentes. On each click, I would like to
record the position clicked in a vector.
Any help are welcome.

Miltinho
-----
number.clicks<-4
for (i in 1:number.clicks)
 {
 plot(0,0, type="n")
 seg1<-arrows(-0.5,-1,0.5,0, col=1)
 seg2<-arrows(0,-1,-0.3,0.3, col=2)
 seg3<-arrows(0.2,-0.7,-0.5,0, col=4)
 # here I would like click on PLOT
 # and record de XY position
 # before go to next aquisition
 }

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