RE: [R] gray background in png

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Mon 19 Jul 2004 - 01:29:47 EST


Seems like a bug to me. I tried setting theme=col.whitebg in arguments to trellis.device, same result. Setting options(lattice.theme=col.whitebg) also does the same thing. The same thing happens win.metafile() for me. This is on WinXPPro, R-1.9.1 and

> packageDescription("lattice")

Package: lattice
Version: 0.9-16
Date: 2004/07/07
Priority: recommended
Title: Lattice Graphics
Author: Deepayan Sarkar <deepayan@stat.wisc.edu> Maintainer: Deepayan Sarkar <deepayan@stat.wisc.edu> Description: Implementation of Trellis Graphics. See ?Lattice for a brief

        introduction
Depends: R (>= 1.9.0), grid
License: GPL version 2 or later
Packaged: Wed Jul 7 02:39:54 2004; deepayan Built: R 1.9.1; i386-pc-mingw32; 2004-07-07 14:00:16; windows

Andy

> From: Sundar Dorai-Raj
>
> Hi all,
> I'm having a problem creating png images with
> trellis.device. I would
> like to create many plots with a white background using a sequence
> number in the file argument (i.e. "%02d"). The first plot is
> as expected
> with a white background. However, the second and all subsequent plots
> have a gray background. I would like all plots to have a white (or
> transparent) background. Below is an example:
>
> library(lattice)
> z <- expand.grid(A = LETTERS[1:8], B = letters[1:6])
> z$x <- z$y <- rep(1, nrow(z))
> trellis.device(png, file = "test%02d.png", bg = "white")
> lset(col.whitebg())
> xyplot(y ~ x | A * B, data = z, layout = c(4, 6))
> dev.off()
>
> This is also the case for jpeg and bmp though win.metafile and
> postscript do not have this problem. Is this a bug or am I missing
> something obvious?
>
> I found one reference that implies this may be expected behaviour but
> I'm not sure if I interpretted the comment correctly.
>
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/18890.html

 > R.version

          _
platform i386-pc-mingw32

arch     i386
os       mingw32

system i386, mingw32
status
major 1
minor 9.1
year 2004
month 06
day 21
language R
 > help(package = lattice)

                Information on Package 'lattice'

Description:

Package: lattice
Version: 0.9-12
Date: 2004/06/01
<snip>



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https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Jul 19 01:39:13 2004

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