Hi
Sorry to join this thread late. As a couple of people have pointed out, no general solution exists currently. It's an interesting problem though and something that I have experimented with in a couple of ways in the past. I have written down some thoughts about the issues and described a couple of experiments; it's all very rough at this stage and would need a lot of polishing and packaging to be widely useful, but you might want to take a look at http://www.stat.auckland.ac.nz/~paul/R/Import/import.html
and particularly the further link
http://www.stat.auckland.ac.nz/~paul/R/Import/importvector.html
Paul
Hinrich G�hlmann wrote:
Thanks for your suggestions!
Even though they are less than encouraging, I quickly want to give you the rational why I have asked this. Actually I was inspired by Paul Murrell's useR presentation - have a look at the very last slide of his presentation which you can find at
http://www.stat.auckland.ac.nz/~paul/Talks/useR2004.pdf - If only this kind of functionality could be generalized to any vector graphics... Oh, well, still pixmap gives a solution for the moment and that's ok. Thanks again!
Cheers, hinrich d8-)
Roger Bivand wrote:
On Tue, 7 Dec 2004, Hinrich G�hlmann wrote:
Dear R users,
I know of the possibility to import bitmaps via the nice pixmap library. But if you later on create a PDF it is somewhat disappointing to have such graphics bitmapped. Is there a trick (via maps?) to import a vector graphic and have them plotted onto a graph? My searching attempts in the searchable r-help archive did not seem to result in anything useful...
No, nothing obvious. If you have an Xfig file - or convert to one from PS,
you may be able to extract the lines with their attributes by hand (the
file is just text, so you can "see" the vector graphics), and write an R
function to plot them (rescaled) onto the device if you need a single
graphical element many times. Otherwise, perhaps edit the graphics file
after R has completed its work. None of the vector map formats is easy to
use for this kind of trick, especially because you probably need
attributes on the lines (thickness, colour).
Cheers, hinrich d8-)
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