[R] overlapping a plot with an external image
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed May 21 16:38:56 CEST 2003
On Wed, 21 May 2003, Meinhard Ploner wrote:
> It's possible to overlap an external image (jpg or pdf)
> with a plot generated with R?
> Specifying the image as the background
> of the plot might not be possible...
Although this has been discussed, R graphics devices cannot as yet plot
bitmap images. So all one can do is to plot a set of rectangles: for that
the pixmap package might be helpful.
Although we might add the ability to plot a bitmap image, note that it is
not straightforward, as R screen graphics devices can be dynamically
resized. What should be done with a plotted image then? Interpolate on
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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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