[R] Multiple palettes on single plot don't get rendered when I use dev.copy2pdf

[Prof Brian Ripley]

On 12/12/2012 09:10, peter dalgaard wrote:
>
> On Dec 12, 2012, at 01:48 , arun wrote:
>
>> Hi,
>> Try this:
>>   pdf("broke.pdf")
>>   palette(rainbow(6))
>>   plot(x=x1,y=y1,col=y1,xlim=c(-10,20))
>>   palette(heat.colors(6))
>>   points(x=x2,y=y2,col=y2)
>>   dev.off()
>> A.K.
>
> Yep. Notice though that this is not specific to dev.copy2pdf, the same effect happens if you just resize the the screen device. Seems like palette changes are not recorded in the display list. Not sure whether that is by omission or by design.
>

I believe it is by design.  palette() is part of package grDevices, and 
you should think of the palette as a per-session setting.  (It is stored 
in R itself, not on the device and not in package grDevices.)

So plots are plotted using the last palette set in that R session, 
including being re-plotted.


-- 
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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