MATLAB: Extract the column/ row numbers or adress

extraction of column adress

Hi,

I have 1 x 10000 matrix which got values of 0, 1 in it. Here, I would like to get the information on column numbers which got the value 1. Attached, here is th matrix. Please help me with this…

Best Answer

> I would like to get the information on column numbers which got the value 1

For logical row vectors or numeric row vectors containing 1|0,

colNum = find(c);

If the row vector contains values other than 0|1 and you want to find the 1s, follow Omid Saeidi's advice,

colNum = find(c==1);

If you're planning on indexing, follow dpb's advice and use logical indexing

logidx = logical(c);  % if c is numeric
% or 
logidx = c==1;        % if c contains values outside of 0|1

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or for newer MATLAB versions repelem:

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Someting like this

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