You are correct, thank you. I added a new subsection 'Graphics
Devices' in http://wiki.r-project.org/rwiki/doku.php?id=tips:surprises:traps
to document this behavior.
Paul
On Thu, Feb 5, 2009 at 4:58 AM, Peter Dalgaard <p.dalga...@biostat.ku.dk> wrote:
> Paul Johnston wrote:
>> My goal is to create a graph with one column and three rows into a
>> single graphic. The mfrow, mfcol, and layout functions all have the
>> same effect: three graphs are produced in a single pdf file, having
>> one graph per page. This is not what I want (I didn't want multiple
>> pages). Just before I sent this post, I was able to generate the
>> desired output with split.screen. Is this the expected behavior of
>> mfrow and layout?
>
> If you call them before opening the device, then yes, they will not
> affect that device, but presumably some other device...
>
> -p
>
>>
>> Paul
>>
>> --------------------------------
>>
>> My code is as follows (ToruosityPlot and DiameterPlot are essentially
>> identical to LDRPlot).
>>
>> layout(matrix(1:3, ncol=1))
>> #par(mfrow=c(3,1))
>>
>> pdf("results.pdf", width=4, height=3, pointsize=4, colormodel="cmyk",
>> onefile=TRUE)
>>
>> TortuosityPlot(left, right)
>> DiameterPlot(left, right)
>> LDRPlot(left, right)
>>
>> dev.off()
>>
>> LDRPlot <- function(left, right)
>> {
>> plot(left$x, left$LDR, bty="n", ann=FALSE, xlim=c(-1500, 1000),
>> ylim=c(1.0, 1.5))
>> abline(v=0, col=gray(.90))
>> lines(left$x, left$LDR, col="green4", lty="solid")
>> points(left$x, left$LDR, bg="limegreen", pch=21)
>> lines(right$x, right$LDR, col="blue4", lty="dashed")
>> points(right$x, right$LDR, bg="blue", pch=21)
>> #title(main="LDR", xlab="Distance (um)", ylab="LDR",
>> col.main="black", col.lab=gray(.4), cex.main=1.2, cex.lab=1.0,
>> font.main=4, font.lab=3)
>> }
>>
>>
>> platform i386-apple-darwin8.11.1
>> arch i386
>> os darwin8.11.1
>> system i386, darwin8.11.1
>> status
>> major 2
>> minor 8.1
>> year 2008
>> month 12
>> day 22
>> svn rev 47281
>> language R
>> version.string R version 2.8.1 (2008-12-22)
>>
>> ______________________________________________
>> R-help@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.
>
>
> --
> O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
> c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
> ~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
>
>
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