[R] Contouring irregular xyz data via TIN

Kris Nackaerts kris.nackaerts at agr.kuleuven.ac.be
Thu Aug 14 14:09:34 CEST 2003


I have XYZ data available in a MySQL database. I get it out, can plot 
the data with the plot() function, load it into a geoR datastructure. 
But what I actually would like to do is a simple contouring of the data 
based on a no Kriging interpolation such as TIN based.

I know the first thing I shold do is interpolate a full matrix for the 
region I have my points for, then contour should do its work. Any idea 
which function can be used for XYZ interpolations, maybe/hopefully based 
on a Delaunay triangulation in combination with linear or spline 
interpolation. Is there a package that allows me to do this?



 Minds are like parachutes, they only work when open

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