[R] trouble with cloud output to bmp when in loop

[Deepayan Sarkar]

On 12/8/06, Eric Peterson <peterson at heritage.nv.gov> wrote:
> I have some data that I need to view in various 3-D clouds.  To better see
> the cloud structure on a 2-D screen I would like to output a bunch of bmp
> files with clouds at slightly different angles, then run them through an
> external program to animate them.  But I'm having trouble getting cloud()
> from the lattice package to output to bmp files.  Oddly, this is only a
> problem when outputting multiple files in a loop.
>
> WORKS FINE:
> >  bmp("d:/test2.bmp"); cloud(z~x+y); dev.off()
>
> ALSO WORKS:
> > bmp("d:/test01.bmp"); cloud(z~x+y); dev.off(); bmp("d:/test02.bmp");
> cloud(z~x+y); dev.off();
>
> DOES NOT WORK (produces blank bitmaps):
> > for(i in 1:3) {bmp("d:/test2.bmp"); cloud(z~x+y); dev.off()}
>
> Is this a bug?

No, but it's a FAQ:

http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f

-Deepayan