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MathGroup Archive 2005

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Re: Problems with ExtendGraphics/Delaunay Triangulation

  • To: mathgroup at
  • Subject: [mg53764] Re: Problems with ExtendGraphics/Delaunay Triangulation
  • From: "Hugh" <h.g.d.goyder at>
  • Date: Wed, 26 Jan 2005 04:37:50 -0500 (EST)
  • References: <csioin$nnr$><csl0t5$6qt$>
  • Sender: owner-wri-mathgroup at

I think Jens is correct and that this is a known bug. If you go to the
1996 mathgroup posting

you will find a work around by Tom Wickham-Jones (who wrote the code).
He adds small random numbers to avoid problems with regular data. He
also states that one day he will update the code - but I don't think
this has happened. This is a pity because I think ExtendGraphics is a
very good and necessary add-on.

How you are meant to find out about this bug is unclear. Wolfram
Research used to keep a FAQ list on ExtendGraphics but this got lost in
the reorganisation of the site. 

Hugh Goyder

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