[R] how to capture a series of plots

Weijie Cai wcai11 at hotmail.com
Fri Mar 4 00:17:26 CET 2005

Hi, there

I am trying to capture a series of plots into jpeg or png files so that I 
can create gif animation later. However, my plot background generation is 
very slow, and I create the background plot only at the very beginning, and 
at each step I only refresh the foreground points and symbols like this:
while (condition holds){

My question is, can I create a series of plots test1.jpg, 
test2.jpg...continuously? To my knowledge, R has to close current device (by 
dev.off()) to write to current file, so once first jpeg file is written, the 
current device with background will be off, therefore, I cannot add symbols 
in next device and create following file series.

Any suggestions?



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