Natural neighbor interpolation/extrapolation

From: Patrick Laberge (plaberge@XXXXXX)
Date: Fri Sep 06 2002 - 09:12:23 MDT

  • Next message: fred: "Re: Natural neighbor interpolation/extrapolation"

    I have a little question about the natural neighbor
    interpolation/extrapolation code/package found in the natgrid part of
    ngmath.
     
    The question is: Is it possible to use the extrapolation mode while telling
    it (the natural neighbor interpolation code) that for all extrapolated point
    which are beyond a certain range (say 50 meters) of the convex hul (the
    polygon created by the data I'm using as input for the natural neighbor
    operation), no extrapolation should be done, the default "no data" value
    should be used for those points?
     
    All that is because I'm working on a project where I need extrapolation but
    I don't want to have it too far from the data I have and it would be simpler
    for me if there was a way to do this in the code instead of having to code
    something myself.
     
    Thanks!
     
    Patrick Laberge

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