[R] multiple plots in same graph window

David Winsemius dwinsemius at comcast.net
Tue Apr 21 21:17:38 CEST 2009

On Apr 21, 2009, at 12:58 PM, BARRES-DE-ALMEIDA U. wrote:

> Hi,
> I'm trying to make multiple plots in a same graph window in R.
> The multiple graphs are showing up in the right positions on the  
> window, but I'm having the problem that the graphic window is being  
> refreshed every time a new plot is drawn, so that I end up with only  
> the last graph coming up; the previous ones are all erased
> If I try to print in a .eps file directly, then I end up with the  
> first plot only, in the right position of the page, and the others  
> are not plotted at all.
> The script I wrote is the following:
> X11()
> par(fig=c(0., 0.55, 0.45, 1.), cex=0.8)
> plot(ldtime, dx[which(dphotons$energy<0.3, arr.ind=T)], type="l",  
> main="", xlab="seconds", ylab="cell density", xlim=c(min(hdtime),  
> max(ldtime)))
> dev.set(dev.cur())
> par(fig=c(0., 0.55, 0., 0.55),cex=0.8)
> plot(hdtime, dx[which(dphotons$energy>0.5, arr.ind=T)], type="l",  
> xlab="seconds", ylab="cell density", xlim=c(min(hdtime), max(ldtime)))
> dev.set(dev.cur())
> par(fig=c(0.5, 1., 0., 1.), cex=0.8)
> plot(x, cumsum(Pl)/max(cumsum(Pl)), type="l", main="", xlab="",  
> ylab="profile cumulative probability", xlim=c(min(hdtime),  
> max(ldtime)))
> points(x, cumsum(Ph)/max(cumsum(Ph)), type="l", col=gray(0.5))
> Can someone please point me what I'm doing wrong?

Either use layout or par(mfcol=2, mfrow=2)

Modified from the example in layout's help:
  layout(matrix(c(1,2,3,4), 2, 2, byrow = TRUE))
  ## show the regions that have been allocated to each plot

David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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