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Roman Voronov

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23 Apr 2013 nanmedfilt2 This MATLAB function performs median filtering of the matrix A in two dimensions while ignoring NaNs Author: Roman Voronov medfilt2 nan median f..., image processing 10 1
  • 5.0
5.0 | 1 rating
Comments and Ratings by Roman Voronov View all
Updated File Comments Rating
08 May 2013 Fast 2D peak finder Find local maxima \ peak positions in noisy 2D arrays Author: nate

please add the option to get a 2d bw mask of the peaks, in addition to the awkward coordinate vector ...

11 Feb 2013 Gradient for scattered data Compute gradient on triangle faces or their vertices for triangulated data Author: Duane Hanselman

Attempted to access last(6580); index out of bounds because numel(last)=6579.

Error in trigradient (line 74)
r=tn(first:last(k)); % triangles having k-th vertex

11 Feb 2013 Surface Fitting using gridfit Model 2-d surfaces from scattered data Author: John D'Errico

11 Feb 2013 Surface Fitting using gridfit Model 2-d surfaces from scattered data Author: John D'Errico

Exactly what I was looking for, the help could start with a simpler example:
[X,Y] = meshgrid(1:5);
Zsmooth = gridfit(X,Y,A,1:5,1:5,'smooth',10)
Zsmooth =
0.9638 1.9517 2.9512 3.9517 4.9638
1.9517 2.8162 3.7338 4.8162 5.9517
2.9512 3.7338 4.5266 5.7338 6.9512
3.9517 4.8162 5.7338 6.8162 7.9517
4.9638 5.9517 6.9512 7.9517 8.9638

25 Sep 2012 maximize figure windows Maximize figure windows by using the Microsoft Windows application programming interface (API). Author: Alain Trostel

64 bit support needed

Comments and Ratings on Roman Voronov's Files
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09 Oct 2014 nanmedfilt2 This MATLAB function performs median filtering of the matrix A in two dimensions while ignoring NaNs Author: Roman Voronov Chad Greene

This function is quite useful, and it's fast. I find that nanmedfilt2 takes roughly twice as long as the medfilt2 function found in the image processing toolbox. That's not perfect, but it's faster than any other manual solutions I have tried. I recommend changing line 9 to sz=3 to match the default 3-by-3 neighborhood of medfilt2.

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