R-beta: Switching between plots without erasing them.
maechler at stat.math.ethz.ch
Mon Jun 30 17:17:31 CEST 1997
>>>>> "Richard" == Richard Lammers <lammers at edac.sr.unh.edu> writes:
Richard> I have a question relating to switching between plots within
Richard> the graphics window [x11()]. If this is not appropriate for
Richard> this mailing list then please let me know.
Your question was not at all inappropriate for the mailing list.
It's a very good question,
and I don't know an answer.
My guess (after not too extensive amounts of thinking):
It's not possible currently.
Richard> What I am doing now:
Richard> Opening a graphics window and setting two plot regions [ie
Richard> with par(mfrow=c(2,1))]. In the top section there is a plot
Richard> with a set of points which represent river gauges located by
Richard> latitude and longitude pairs. These points are global in
Richard> extent so I am also using continent boundaries from a data set
Richard> found on Statlib. Because there are so many points this takes
Richard> some time to draw. Using the identify() function a point is
Richard> selected and in the lower plot a time series is displayed from
Richard> that particular river gauge. This is in a loop which allows
Richard> repeated clicks on the map and time series plots. Each time
Richard> through the loop, the map must be redrawn.
Richard> I would like to do the following:
Richard> I would like to keep the upper plot (the map) intact while
Richard> being able to completely redraw the lower plot (the time
Richard> series). Is there some way I can return to the upper plot and
Richard> invoke the identify function without erasing the map? The
Richard> function frame() erases the plot. I suppose the alternative
Richard> would be to have two independent graphics windows, but I am
Richard> not sure if that is possible within R.
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