cftool and hyperdimensional data

2021 1 14
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Does anyone know if cftool can handle fits of data with more than 3 dimensions? i.e., hyperdimensional surface fits? Thanks in advance.

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Matt J
Matt J 2021-1-14
编辑：Matt J 2021-1-14

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Clay Fulcher
Clay Fulcher 2021-1-14
Thanks Matt for your fast reply. lsqcurvefit looks to be set up like fmincon, which I am familiar with. To use lsqcurvefit, would I need to define the spline fitting algorithm in the objective function myself? Or is there a pre-packaged spline fit similar to "thin-plate spline" used in cftool that I can use with lsqcurvefit?
Matt J
Matt J 2021-1-14
编辑：Matt J 2021-1-14
You haven't mentioned anything about splines in your original post, so I don't know where it fits into anything...
You need to supply a function which generates the hypersurface for any guess of the parameters.
Clay Fulcher
Clay Fulcher 2021-1-14
Ok, thanks. That's what it seemed to me. Yes, this data does not fit any kind of closed-form model that I can think of very well. I've been using the cftool interpolation option for this data, and the "thin-plate" spline does a decent job. One day I'll try to write a hyperdimensional spline fitter, but I'm in kind of a hurry. Thanks for your help.

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