plot with pairwise joined points

On 27/02/2009, at 9:46 AM, William Simpson wrote:

I would like to do as follows
plot(a,b)
points(c,d,pch=19)

Now join with a line segment point a[1], b[1] to c[1], d[1]; a[2],
b[2] to c[2], d[2] ... a[n], b[n] to c[n], d[n]

All corresponding points from the two data sets are joined by line
segments.

?segments

       cheers,

               Rolf Turner

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