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From: "murthy m" <mmurthy007@googlemail.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: griddata: can we get equation of surface?
Date: Mon, 4 Feb 2008 11:53:02 +0000 (UTC)
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"John D'Errico" <woodchips@rochester.rr.com> wrote in
message <fo6rir$254$1@fred.mathworks.com>...

Thank you. Your 'gridfit' function is excellent. In my case,
just to give you an idea of what I am trying, I have x,y and
z matrices as given below and I want to choose an
exponential function of the form
Z(x,y)=exp[-(x-x(i))-(y-y(i))/m*m] where m is a constant to
be obtained. Is it possible?

>> x=1:7;
>> y=1:11;
>> z=
[0.3100    0.3393    0.3638    0.4013    0.3783    0.3485  
 0.3258
    0.3450    0.3996    0.4548    0.5188    0.4564    0.4052
   0.3471
    0.3704    0.4487    0.5299    0.6182    0.5357    0.4555
   0.3769
    0.3997    0.5052    0.6176    0.7382    0.6186    0.5185
   0.4039
    0.4279    0.5614    0.7074    0.8544    0.7155    0.5784
   0.4389
    0.4602    0.6335    0.8104    1.0000    0.8238    0.6521
   0.4743
    0.4372    0.5812    0.7335    0.8823    0.7279    0.5845
   0.4327
    0.4001    0.5199    0.6393    0.7660    0.6502    0.5318
   0.4108
    0.3769    0.4704    0.5695    0.6650    0.5740    0.4791
   0.3816
    0.3460    0.4139    0.4785    0.5481    0.4886    0.4199
   0.3559
    0.3197    0.3578    0.3943    0.4302    0.3958    0.3579
   0.3212];