On 12-11-27 10:46 AM, Baoqiang Cao wrote:
Hi,
I'm trying to plot something in the following way and would like if
you could help:
I'd like in a same plot window, two plots are shown, the left one is a
bird-view plot of the whole data, the right half keep changing, i.e.,
different plots will be shown up on request, so that when I
select/click on some where in the left plot, the right plot will be
the corresponding plot.
What I did is:
par(mfrow=c(1,2))
plot(x, y)
while(1) {
...
pxy <- locator(1, type="p")
#select data point (dx,dy) based on pxy for a new plot
..
plot(dx,dy)
}
I ended up with the left plot is overwritten by plot(dx,dy). Is there
anyway to keep the left side intact while changing plots on the right
side?
Yes, use the "mfg" option of par(). For example,
par(mfrow=c(1,2))
plot(1)
for (i in 1:100) {
par(mfg=c(1,2))
plot(i)
}
Since this overplots each time, you may need something fancy to clear
the display (e.g. see ?rect).
Duncan
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