[R] Background color with jpeg and png devices

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Sep 15 10:13:44 CEST 2000

On Thu, 14 Sep 2000, Trent Piepho wrote:

> If I change the background color of a plot, with par(bg="red") for example, I
> get a plot with a red background when I use the postscript or X11 devices. 
> With the png or jpeg devices, the background is white. 
> Is this the intended behavior, or a bug?  Is there anyway to get a non-white
> background with the png device?  I'm using R-1.1.0 on Linux.

A bit of both (as I never had a need for other than white backgrounds).
But if people want it (evidently they do) it is a bug (Unix only as it
seems correct on Windows). We will fix it in due course, but for now I
believe that the bitmap device does pick up the background colour
and can produce png or jpeg.

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)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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