Calculating the percentage in a matrix

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kash
kash il 17 Ott 2012
I have a matrix
A=[1 2 1
2 2 3
1 1 2 ]
In this i want to calculate percentage for all values ,in this matrix i have three values 1,2,3
so the percentage must be
1-44.44%
2-44.44%
3-11.11%
please help

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Honglei Chen
Honglei Chen il 17 Ott 2012
Modificato: Honglei Chen il 17 Ott 2012
Here is one way to do it in MATLAB
A = [1 2 1;2 2 3;1 1 2];
[ua,~,uaidx] = unique(A(:));
uapercent = accumarray(uaidx,ones(numel(uaidx),1))/numel(uaidx);
[ua uapercent]
But if you have Statistics Toolbox, you can simply do
tabulate(A(:))
  1 Commento
Matt Fig
Matt Fig il 17 Ott 2012
[ua,~,uaidx] = unique(A(:));
upercent = histc(uaidx,ua)/length(uaidx)

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