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

[Prof Brian Ripley]

This is FAQ Q7.22

On Fri, 8 Dec 2006, Eric Peterson 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?
>
> Is there a way to make this work?
>
> (working in MS Windows XP x64 with R 2.4.0)
>
> Thanks!
>
> ---
>
> Eric B. Peterson
>
> Vegetation Ecologist
>
> Nevada Natural Heritage Program
>
>
> 	[[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.

Please do take note here.


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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