On Wed, 5 Oct 2005, Duncan Murdoch wrote: > On 10/5/2005 9:31 AM, Prof. Paul R. Fisher wrote: >> Hi all >> I am a complete newbie to this list (just subscribed) and a newcomer to >> R (an S user from olden times). I have been using scatter3d to create a >> 3d scatter plot with surface. The graphic is created within the rgl >> package and I have used rgl.postscript to export it so I can generate a >> publication quality image. My problem is that the plotted surface is no >> longer transparent in the postscript output ie. the rgl.spheres that are >> behind the surface disappear in the postscript image. Can't seem to find >> any info on this anywhere. Am I doing something wrong? Is there an easy fix? > > I think Postscript doesn't support transparency (or at least the version > of Postscript that the rgl.postcript function targets doesn't support > it). You may have to export a bitmapped format using the rgl.snapshot() > function. If your original window is very large this may give you good > enough quality.
Common PostScript (level 2) does not support either full or partial transparency (and I guess partial transparency is meant here or the surface could just not be plotted). It would be good to have a rgl.pdf which did. These days PDF is the `portable PostScript' and since version 1.4 has had alpha-channel supoort. Ref: http://en.wikipedia.org/wiki/Transparent_pixels#Transparency_in_PostScript -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html