Re: interp2 partial derivatives

"John D'Errico" <woodchips@xxxxxxxxxxxxxxxx> wrote in message <gpmne9$adr$1@xxxxxxxxxxxxxxxxxx>...
"Gordon " <MAAC.SImon@xxxxxxxxxx> wrote in message <gpmlr6$q9n$1@xxxxxxxxxxxxxxxxxx>...
Hi John,

I want to use method 'spline' or 'bicubic'. I think there should be an alternative to using 'gradient', because one uses piecewise polynomials in both methods.

Do you have the splines toolbox? Should be
simple then.

If not, then it will take a bit more effort. I'll be
lazy and just suggest a central finite difference.

Of course, by finite differences, I mean to use
interp2 to interpolate several points.

john
.

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