[R-SIG-Mac] Problems with savePlot() and postscript under Snow Leopard

[David Winsemius]

On Feb 13, 2010, at 1:51 PM, Hannes Nietnagel wrote:

> Dear all,
>
> since my problem could not be solved in the general R mailing list,
> I'll post the issue again in this specific mailing list.
>
> I tried:
>> iris
>> species.n <- as.numeric(Species)

It would help if yuo access the column properly. "Species" is only  
meaningful within "iris".

>> plot(iris, col = species.n)
>> savePlot(filename="IrisTestPlot", type="png")

If you want a png plot then open the png() device and close it when  
you are done:

species.n <- as.numeric(iris$Species)
png("test.png")
plot(iris, col = species.n)
dev.off()

Produces the requested plot in the working directory and Preview opens  
it without problem.
>
> and got the error message:
> Fehler in savePlot(filename = "IrisTestPlot", type = "png") :
> kann nur aus 'X11(type="*cairo")' Devices kopieren
>
> (sorry, I have a german version of R).
>
> I tried:
>> postscript("IrisTestPlot.eps",  
>> paper="special",height=6,width=6,onefile=FALSE,horizontal=FALSE)
>
> and
>
>> postscript(file="IrisTestPlot2.pdf", onefile = FALSE, horizontal =  
>> FALSE, paper = "special", width = 8, height = 8)
>
> in both cases there are files produced that cannot be opened. Error
> message: the bounding box is missing.
>
>
> According to Michael's advice I tried:
>> quartz.save("IrisTestPlotquartz.png","png")

> and got:
> postscript
>        5
>
> but no file.
>
> as well as:
>> system('open IrisTestPlotquartz.png')
>
> It states that the files does not exist.
>
> And I tried:
>> plot(iris)
>> dev.cur()
> And got the answer:
> postscript
>         3
> and again no file.
>
>
>
> I use 64 bit R under Snow Leopard.
>
>> sessionInfo()
> R version 2.10.1 (2009-12-14)
> x86_64-apple-darwin9.8.0
>
> locale:
> [1] de_DE.UTF-8/de_DE.UTF-8/C/C/de_DE.UTF-8/de_DE.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> loaded via a namespace (and not attached):
> [1] tools_2.10.1
>
>
> What could be the problem and how can I solve it?
> Thank you very much in advance for your time and advices!
>
> Hannes
>
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT