How to curve fit 4D data?

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Luis Meneses 2015-4-27

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评论： Luis Meneses 2015-5-2

采纳的回答： Ahmet Cecen

Hello :D

I am using Surface fitting toolbox to curve fit 3 dimesional data. Until now, I have 3 variables (X, Y and Z), and i can fit with no problems, and avaliate the goodnes of fit.

But now, I need to put there one more variable (T), and will be 4 dimensional. Any ideia how to fit that to obtain a mathematical expression, and avaliate the goodnes of fit?

Thank you

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Ahmet Cecen 2015-4-27

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If your curves will be polynomials, try my FEX function MultiPolyRegress. It also provides a fairly rich set of goodness of fit measures.

http://www.mathworks.com/matlabcentral/fileexchange/34918-multivariate-polynomial-regression

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Sean de Wolski 2015-4-27

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Statistics Toolbox provides fitnlm which will fit in N-D for you.

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Sean de Wolski 2015-4-28

These are newer functions that provide similar functionality to nlinfit or mvregress

Luis Meneses 2015-5-2

I have matlab R2011a, how can i do with this version?

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