[R] Ggplot2: saving a grid with multiple plots

[ONKELINX, Thierry]

Dear all,

Thanks for all your responses. It looks like I was misinterpreting the
capabilities of ggsave(). That can only handle the "basic" ggplot2 plots
(which can be very elaborate). This behaviour is decribed at the end of
chapter 8 in the ggplot2 book, but I missed that.

Opening and closing a device works well.

Cheers,

Thierry


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium 
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be 
www.inbo.be 

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Dieter Menne
Verzonden: donderdag 12 maart 2009 9:04
Aan: r-help at stat.math.ethz.ch
Onderwerp: Re: [R] Ggplot2: saving a grid with multiple plots

ONKELINX, Thierry <Thierry.ONKELINX <at> inbo.be> writes:

> I have managed to create a figure on the screen with multiple plots in
> it. Something like the example below. When I save that with ggsave(),
> only the last plot gets saved (pPath in the example) instead of the
> entire figure. Any suggestions how I can save this kind of figures
> automated?

No idea what the easiest way would be if you want both window and 
pdf.

Dieter

library(ggplot2)
pPoint <- qplot(unemploy/pop, psavert, data=economics)
pPath <- qplot(unemploy/pop, psavert, data=economics, geom="path")

pdf(file="test.pdf")
pushViewport(viewport(layout = grid.layout(2, 1)))
print(pPoint, vp = viewport(layout.pos.row = 1, layout.pos.col = 1))
print(pPath, vp = viewport(layout.pos.row = 2, layout.pos.col = 1))
dev.off()

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