R help - Apr 2009 - Maintain proportions while reducing graphic output size

Hello,

Is there a combination of par() settings or other commands that will allow
me to uniformly reduce the size of graphics outputs? It appears that the
png() device outputs 5-inch by 5-inch  images, and I am trying to change my
whole script to produce 4x4 images with the same proportions. I tried
specifying parameters within each png(), but it reduced the size of the file
without refitting the contents so the graph title went off the margin. This
is an example of the code I used:

png("graph2.png",height=432, width=432, units="px", res=96)

What would be the best way to generate 4x4, proportional graphs?

Thanks!

	[[alternative HTML version deleted]]

lawnboy34 wrote:
> 
> Hello,
> 
> Is there a combination of par() settings or other commands that will allow
> me to uniformly reduce the size of graphics outputs? It appears that the
> png() device outputs 5-inch by 5-inch  images, and I am trying to change
> my
> whole script to produce 4x4 images with the same proportions. I tried
> specifying parameters within each png(), but it reduced the size of the
> file
> without refitting the contents so the graph title went off the margin.
> This
> is an example of the code I used:
> 
> png("graph2.png",height=432, width=432, units="px",
res=96)
> 
> What would be the best way to generate 4x4, proportional graphs?
> 
> Thanks!
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 
See the helpfile for png().

If you change the width and height of your output, you should rescale the
pointsize of plotted text accordingly.  For example: 

#Without rescaling pointsize for text
png("temp1.png",width=200,height=200)
plot(rnorm(100),rnorm(100),main="A title of some sort")
dev.off()

#With pointsize for text rescaled
png("temp2.png",width=200,height=200, pointsize=6)
plot(rnorm(100),rnorm(100),main="A title of some sort")
dev.off()
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