Re: How to grid ungridded data
- To: mathgroup at smc.vnet.net
- Subject: [mg23474] Re: How to grid ungridded data
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 12 May 2000 22:54:16 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <8fdfuj$ng0@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, 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 http://www.mathsource.com/Content/Enhancements/Graphics/3D/0208-976 Regards Jens 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... >