[R] bwplot in loop doesn't produce any output

[Gabor Grothendieck]

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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