[R] save plot

[Gavin Simpson]

On Fri, 2010-07-16 at 11:17 -0400, linda.s wrote:
> I made a plot, but after I made a second plot, the previous plot was
> gone. How can I save all the plots in a file (I do not manually copy
> and paste them one by one)?
> Thanks.
> Linda

[I presume you addressed this to Duncan Murdoch for a good reason???]

Open a new device before plotting, do your plotting, close the device.

For example, using a PDF device via pdf():

pdf("my_plots.pdf", height = 8, width = 8, pointsize = 10,
    version = "1.4", onefile = TRUE)
for(i in 1:10) {
    y <- rnorm(100)
    x <- rnorm(100)
    plot(y ~ x)
}
dev.off()

The last line (dev.off() is very important as the file will not be valid
pdf without closing the device.

HTH

G

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