cftool and hyperdimensional data

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Clay Fulcher 2021-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/717318-cftool-and-hyperdimensional-data

评论： Clay Fulcher 2021-1-14

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 2021-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/717318-cftool-and-hyperdimensional-data#answer_598263

编辑：Matt J 2021-1-14

It cannot, but lsqcurvefit can.

https://www.mathworks.com/help/optim/ug/lsqcurvefit.html

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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 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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