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polyVal2D and polyFit2D

version 1.1.0.0 (11.5 KB) by Mark Mikofski
Evaluate 2D polynomials using Horner's method. Fit 2D polynomials to data using backslash operator.

20 Downloads

Updated 18 Apr 2013

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Often it's necessary to fit or evaluate a function with 2 dimensions. Use polyFit2D.m to fit a 2D polynomila to data and polyVal2D.m to evaluate it. Fun!

These functions are explained in detail here:
http://poquitopicante.blogspot.com/2013/03/horners-method-in-2d.html

They are also hosted in a Gist on Github here:
https://gist.github.com/mikofski/5159267

Cite As

Mark Mikofski (2019). polyVal2D and polyFit2D (https://www.mathworks.com/matlabcentral/fileexchange/41097-polyval2d-and-polyfit2d), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (3)

Benjamin

assert(all((n+1)*(m+1)<=Npoints)......
'Degree must be smaller than number of data poiints.')

work also fine when Degree must be smaller "or equal" than number of data

Zoe

Much better than the personal one I wrote.

Updates

1.1.0.0

now with polyDer2D.m

MATLAB Release Compatibility
Created with R2012b
Compatible with any release
Platform Compatibility
Windows macOS Linux