[R] Plotting lines and points on the second plot when using gap.plot in plotrix

From: michael watson (IAH-C) <michael.watson_at_bbsrc.ac.uk>
Date: Wed 19 Jul 2006 - 20:58:08 EST


Hi

My question is simple - the gap.plot function in the plotrix package allows users to draw graphs that have a broken axis. However, I want to then add a line to the "second" plot, but can't.

Eg:

twogrp<-c(rnorm(10)+4,rnorm(10)+20)
gap.plot(twogrp,rnorm(20),gap.bounds=c(8,16),gap.axis="x",xlab="X values",

       xtics=c(4,7,17,20),ylab="Y values",main="Plot gap on X axis")

# this doesn't work

points(17,0,col="red")

# this does work

points(4,0,col="green")

I somehow need to set the focus to the second plot so that I can draw lines and points on it.

Any help?

Mick



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