[R] zero margin / marginless plots

From: David Forrest <drf5n_at_maplepark.com>
Date: Thu 11 Jan 2007 - 03:18:32 GMT


Hi,

I'd like to produce a marginless or zero margin plot so that the pixel coordinates represent the mathematics.

xy<-data.frame(x=c(0,1,1,0,0),y=c(0,1,0,0,1)) png('junk.png',width=300,height=300)
par(mar=c(0,0,0,0))
plot(xy$x,xy$y,xlim=c(0,1),ylim=c(,1))
dev.off()

The resultant file has about a 10 pixel margin around these lines, and I'm not sure what parameter or function is controlling this offset. Any hints?

Thanks for your time,
Dave

-- 
  Dr. David Forrest
  drf@vims.edu                                    (804)684-7900w
  drf5n@maplepark.com                             (804)642-0662h
                                    http://maplepark.com/~drf5n/

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Received on Thu Jan 11 14:26:11 2007

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