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Re: TRIGRID co-linearity problem

I had a similar problem few weeks ago. Without going into details
I tried a "brute force" approach adding to x and y geographical 
coordinates small random parts (about 0.0001 * coordinate value). 
Error disappeared and the resulting contour plot was OK.
But it does not of course explain the reason for the peculiar
behavior of trigrid procedure...

Christopher Davey wrote:
> The triangulation( ) procedure works just fine, but In my call to
> trigrid( ), I get an error that I cannot figure out: "Points are
> co-linear, no solution." 


Roman Schreiber