# 3D Least squares polynomial fit in x and y (Scripts) 1.0

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• Last update: 6 years ago
• Operating system: Linux, Mac OS X, Win All, BSD, Solaris
• Publisher: Thomas (6 other programs)
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## 3D Least squares polynomial fit in x and y (Scripts) Publisher's description

### Often, measured data is comprised of N sampled values of z, evaluated at N locations (x,y)

Often, measured data is comprised of N sampled values of z, evaluated at N locations (x,y). With this function, you can calculate the coefficients of the best-fit x,y polynomial using a linear least squares approximation.

You can use this function if you have a set of N data triplets x,y,z, and you want to find a polynomial f(x,y) of a specific form (i.e. you know the terms you want to include (e.g. x^2, xy^3, constant, x^-3, etc.) in your fitting polynomial.

#### System Requirements:

MATLAB 7.7 (R2008b)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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