Its a FAQ
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f
On 8/16/06, Nick Desilsky <ndesilsky at yahoo.com>
wrote:> Hi,
>
> running the following code by itself runs as expected.
>
----------------------------------------------------------------------------
> k <- 1
> i <- 2
> j <- 3
> NumName <- varnames[num.cols[k]]
> FacNames <- varnames[fac.cols[c(i,j)]]
> tmp <- paste(FacNames[1],NumName,sep="~")
> fml <- formula(paste(tmp,FacNames[2],sep="|"))
> bwplot(fml, data = X)
>
>
----------------------------------------------------------------------------
> But when set into a loop, it doens't produce anything. I've tried
sending the output to pdf(file="test.pdf"), and the pdf file stays
empty.
>
> for (i in 1:(lfc-1))
> {
> for (j in (i+1):lfc)
> {
> for (k in 1:lnc)
> {
> NumName <- varnames[num.cols[k]]
> FacNames <- varnames[fac.cols[c(i,j)]]
> tmp <- paste(FacNames[1],NumName,sep="~")
> fml <- formula(paste(tmp,FacNames[2],sep="|"))
> bwplot(fml, data = X)
>
> }
> }
> }
>
>
> Any thoughts ? And if you know how to unlock test.pdf for viewing while R
is running, I'd appreciate this bit of info too (i've tried dev.off(),
windows() and such, and test.pdf can only be viewed after shutting down R).
>
> Thank you.
>
> Nick.
>
>
> ---------------------------------
>
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>
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