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polyVal2D and polyFit2D

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5.0 | 1 rating Rate this file 33 Downloads (last 30 days) File Size: 11.5 KB File ID: #41097 Version: 1.1
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polyVal2D and polyFit2D

by

Mark Mikofski (view profile)

 

03 Apr 2013 (Updated )

Evaluate 2D polynomials using Horner's method. Fit 2D polynomials to data using backslash operator.

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Description

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

Acknowledgements

2 D Weighted Polynomial Fitting And Evaluation and Polyfitn inspired this file.

Required Products MATLAB
MATLAB release MATLAB 8.0 (R2012b)
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Comments and Ratings (2)
20 Mar 2016 Rayane Karim

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

Comment only
17 Oct 2013 Zoe

Zoe (view profile)

Much better than the personal one I wrote.

Updates
18 Apr 2013 1.1

now with polyDer2D.m

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