Sweave: infelicities with lattice graphics
Just a follow-up on this thread, now with R 2.11.1. I was happy back
then to use Deepayan's solution for this, under earlier R versions; but
it now gives an error and the Sweave-generated .tex file no longer compiles.
<<ortho-xyplot1-code, keep.source=TRUE, eval=FALSE>>=
library(nlme)
library(lattice)
xyplot(distance ~ age|Sex, data=Orthodont, type='b', groups=Subject,
pch=15:25,
col=palette(), cex=1.3, main="Orthodont data")
@
<<ortho-xyplot1,fig=TRUE, include=FALSE, echo=FALSE, width=6, height=6>>=
plot(trellis.last.object())
@
Now, I get the following from Sweave:
Error: chunk 46 (label=ortho-xyplot1)
Error in !lattice.getStatus("current.plot.saved", prefix = prefix) :
invalid argument type
Did something in lattice change so that plot(trellis.last.object()) no
longer works or needs to be specified differently?
-Michael
On 7/16/2010 1:14 AM, Deepayan Sarkar wrote:
On Thu, Jul 15, 2010 at 1:51 PM, Michael Friendly<friendly at yorku.ca> wrote:
In a paper I'm writing using Sweave, I make use of lattice graphics, but don't want to explicitly show (or explain) in the article text the print() wrapper I need in code chunks for the graphs to appear. I can solve this by including each chunk twice, with different options, as in <<ortho-xyplot1-code, keep.source=TRUE, eval=FALSE>>= library(nlme) library(lattice) xyplot(distance ~ age|Sex, data=Orthodont, type='b', groups=Subject, pch=15:25, col=palette(), cex=1.3, main="Orthodont data") @ <<ortho-xyplot1,fig=TRUE, include=FALSE, echo=FALSE, width=6, height=6>>= library(nlme) library(lattice) print(xyplot(distance ~ age|Sex, data=Orthodont, type='b', groups=Subject, pch=15:25, col=palette(), cex=1.3, main="Orthodont data")) @ but then, if I decide to change the plotting code, I have to make changes in two places. Is there some feature of Sweave or lattice I've missed that would simplify this? Re-use of code chunks doesn't seem to apply here.
I usually use this variant of Duncan's suggestion: <<ortho-xyplot1-code, keep.source=TRUE, eval=FALSE>>= library(nlme) library(lattice) xyplot(distance ~ age|Sex, data=Orthodont, type='b', groups=Subject, pch=15:25, col=palette(), cex=1.3, main="Orthodont data") @ <<ortho-xyplot1,fig=TRUE, include=FALSE, echo=FALSE, width=6, height=6>>= plot(trellis.last.object()) @ -Deepayan
______________________________________________ R-help at 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.
Michael Friendly Email: friendly AT yorku DOT ca Professor, Psychology Dept. York University Voice: 416 736-5115 x66249 Fax: 416 736-5814 4700 Keele Street Web: http://www.datavis.ca Toronto, ONT M3J 1P3 CANADA