MATLAB: How to get the nonzero elements

matrixzeros

hello,
I have a matrix that having a random coulmns and static number of rows ,and these columns contains alot of zeros,some of nonzero elements and i want to get the non zero elements in it and put it in a new matrix with the same static row.thanks in advance .
Ps i searched abt the nonzeros command but i cannot apply it on my code .

Best Answer

Ahmed, try this code to create the cell arrays based on a row-by-row process (which looks different than if you do it column by column):
m=[...
    1 2 3 4 0 6
1 0 0 4 0 6
0 0 0 0 0 0
3 4 4 0 0 6
4 5 0 2 0 7]
[rows cols] = size(m)
caRow = 1;
for r = 1 : rows
    thisRow = m(r, :);
    nz = thisRow(thisRow ~= 0)
    if ~isempty(nz)
        ca{caRow} = nz;
        caRow = caRow+1;
    end
end
celldisp(ca)
Results:
ca{1} =
     1     2     3     4     6
ca{2} =
     1     4     6
ca{3} =
     3     4     4     6
ca{4} =
     4     5     2     7
Note how one whole row of all zeros is not included.
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