[Rd] Palette changes on redraw (PR#1045)

[Ross Ihaka]

p.dalgaard@biostat.ku.dk wrote:
> 
> Try this
> 
> example(palette)
> 
> then trigger a redraw e.g. by resizing the window. Shouldn't the
> palette be stored as part of the display list?
> 
> (This only happens because the palette was reset at the end of the
> example, but still...)

I could argue either way on this.

I agree that its nasty to have plot colours change in mid-stream,
but I suspect that adding the palette to the display list may not
be the "right" solution.

A different approach would be to map the colour indices (and names)
to RGB values at a slightly higher level.  That way it would be the
RGB values which would be captured in the display list, not the
indices.

[ I'm afraid that I think that the whole display list mechanism is
  "wrong".  We need a much higher level way of describing plots. ]

	Ross
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