gr66@sdcattb.UUCP (05/21/84)
I'm looking for an algorithm for two-dimensional interpolation of "rough" data, which are specified on a regular rectangular grid. The interpolated surface should be continuous and if possible have continuous first derivatives. On the other hand, I don't want any overshoots and extra inflection points. For that reason standard splines and Hermite polynomials don't work. Splines under tension are likely candidates, but inefficient to evaluate. Linear interpolation would work fine, but has no continuous first derivatives. Does anybody in the field out there have a suggestion? All I'd need is a good literature reference. Send mail to !sdccsu3!sdcattb!gr66 Thanks. Martin Heimann Scripps Institution of Oceanography GRD A-020 UCSD, La Jolla, Ca 92093