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[cgal-discuss] getting wrong value while doing linear interpolation


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  • From: sushil <>
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  • Subject: [cgal-discuss] getting wrong value while doing linear interpolation
  • Date: Tue, 25 Feb 2014 05:50:32 -0800 (PST)

Hello all,
In my problem i have a box whose centre is (0,0,0) and the edges of the box
ranges from -4 to 4 in all the three directions ie in x, y and z directions.
the temperature at the point (0,0,0) is 800 degree celsius. and the
temperature varies in only one direction ie in vertical direction in my case
it is z axis. the variation is given by function (800-100(absolute (z
cordinate)). i have 1000 points and temperatures at those points are also
known according to the function. now i need to find the value of temperature
at the query point (-1.78, 3.75, 0.35) which according to the
function must come around 765 degree celsius but is coming nearly 735 degree
celsius. what is going wrong?

firstly i formed a delaunay triangulation of all the 1000 points mapped with
the temperature at these points. then found out the neighbor points of the
query point and then i did the linear interpolation. but it resulted in
wrong answer.

any help would be deeply appreciated.



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  • [cgal-discuss] getting wrong value while doing linear interpolation, sushil, 02/25/2014

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