Re: [R] Saving trellis output to files in scripts...

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Wed 10 Aug 2005 - 02:34:12 EST


This is in the FAQ: You need to wrap any trellis calls in functions or scripts in print().

Andy

> From: Jamieson Cobleigh
>
> With much help from Chuck Cleland, I was able to get xyplot to
> generate the plot I wanted. I'm trying to write a script (that can be
> read using source("file")) to create the plots I want and save them to
> files.
>
> If I type the following lines into the R (in interactive mode), the
> correct plot gets saved into the file myfile.ps with a size of 4,096
> bytes:
>
> ----------------------------
> require(lattice)
>
> trellis.device("postscript", file="myfile.ps", color=FALSE,
> paper="letter", horizontal=TRUE, onefile=TRUE)
>
> xyplot(y ~ x, type="b", data.frame(x=1:5, y=5:1))
>
> dev.off()
> ----------------------------
>
> However, if I put the same lines into a file, "temp.txt", and type
> source("temp.txt") into R, then myfile.ps ends up with a size of 2,332
> bytes and shows a blank page when loaded into ghostscript.
>
> When run using source, it looks like the device is not getting closed
> correctly since if I type source("temp.txt") and then dev.list() R
> responds: "postscript 2"
>
> If I type dev.off(), the file size then increases to 4,277 bytes, but
> then the ps file is malformed.
>
> Anyone know how to make this work?
>
> Jamie
>
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>
>



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Aug 10 02:39:03 2005

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