4D regression

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Donald Hume
Donald Hume 2011-9-21
Hello,
I have a data set (ie a = f(x,y,z)). I'm trying apply a regression to it, but all I can seem to find are articles fitting z = f(x,y). Could someone please point me at a relevant article, I believe I'm having difficulties because of my incorrect regression vernacular. Any suggestions are appreciated.
Don

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the cyclist
the cyclist 2011-9-21
This is typically known as either "multiple regression" or "multivariate regression". That should help you find resources online. You can use the regress() function to do it in MATLAB.

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Sean de Wolski
Sean de Wolski 2011-9-21
Is it a polynomial you're looking for? If so - write out the equations and then put them in matrix form and solve them using ax=b. We can help more if you give us significantly more information.

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