On Thu, May 31, 2012 at 12:44 AM, Susan Biancani <
address@hidden> wrote:
> I'm trying to save a plot of a graph as a postscript file, but when I open
> the file in Adobe Illustrator, it has no edges. I get a warning when I
> execute my code. Here are the code and the warning:
> E(g.art)$color <- rgb(red=0, green=0, blue=0, alpha=0.1)
[...]
> Warning message:
> In segments(x1, y1, x2 + r.seg * cos(th.seg)/uin[1], y2 + r.seg * :
> semi-transparency is not supported on this device: reported only once per
> page
Here is the problem. You cannot have semi-transparent edges in
postscript files. alpha must be 1 for the edge color. If you want some
kind of light grey color, set red, green and blue to (say) 0.8. If you
really want transparency, then create a PDF file instead, that
probably supports transparency. You can probably convert it to
postscript with keeping the transparent edges.
[...]
> Only the edges were semi-transparent, so I tried setting alpha=1 for the
> edges, but I get the same results. Has anyone dealt with something like this
> before?
If you really tried alpha=1, then something else is going on, but
could you try again with alpha=1, just to be sure.
Gabor
> Thanks,
> Susan
[...]
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