MATLAB: How to filter a matrix Row by Row to get the highest value

fliter a matrixImage Processing ToolboxMATLAB

Dear all,
I have this matrix
A= [ 31,62.3,  31,96.3,  31,52.8,  57,91.4  ;...
     71,64.4,  31,93.5,  31,36.2,  57,83.1 ] ;
I want to scan this matrix row by row such that values at the odd columns will not be repeated + it will get the highest value at the even column attached to it
So I want the following answer:
Answer = [ 31,96.3    57,91.4      0,0     ;...  
           71,64.4    31,93.5      57,83.1 ]
The oreder of pairs in each row is not important. The following answe is also OK
Answer = [ 57,91.4     31,96.3        0,0    ;...  
           31,93.5      57,83.1      71,64.4 ]
Many thanks in advance.

Best Answer

See if this satisfies your needs:
C = zeros(size(A));
for k = 1:size(A,1)
    B = reshape(A(k,:),2,[]).';
    G = findgroups(B(:,1));
    BB = reshape(B(any(B(:,2)==splitapply(@(x)max(x),...
        B(:,2),G).',2),:).',1,[]);
    C(k,1:numel(BB)) = BB;
end
C(:,all(C==0,1)) = []
Note: Not tested under all circumstances.
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