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Old 07-31-2009, 03:17 PM
monir monir is offline
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Join Date: Oct 2007
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Question 2D interpolation in Polar Coordinates ??


I have a 2D grid generated using polar coordinates in a plane, and thus the elemental grid panels are NOT squares.

At each grid point, I've the tabulated function value Y, the first two derivatives dY/dr & dY/dth, and the cross-derivative d2Y/drdth.

Can I still apply the bicubic interpolation (Fortran) routines BCUCOF() & BCUINT() to accurately interpolate the function Y at (r1,th1) within the non-rectangular "sector of an annulus" grid cell ??

Thank you kindly.
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