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Re: How to grid ungridded data

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  • Subject: [mg23474] Re: How to grid ungridded data
  • From: Jens-Peer Kuska <kuska at>
  • Date: Fri, 12 May 2000 22:54:16 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <8fdfuj$>
  • Sender: owner-wri-mathgroup at


you *must* triangulate irregular data. If it is too slow you should 
look on Tom Wickham-Jones packages -- there is a Delaunay triangulation
in a C program that much faster than the pure Mathematica version


Manolis Petrakis wrote:
> Hi there,
> (I suppose this is a common problem for everyone who want to handle
> experimental data...)
> Well I want to find an efficient (and especially fast) way to grid data, and
> then to apply splines or fits, etc.
> For example imagine importing temperatures from weather stations all around
> a country, and you want to plot contours, (like the fancy charts on TV
> weather bulletins). So far I know that Mathematica (we are talking for
> version 3.0 here) can plot contours for gridded data.
> I made a first attempt with triangulation but it's sooooooo slow...

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