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How do i select a random cell with a certain value from the matrix

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Antonio Sarusic 2020-3-27

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评论： Adam Danz 2020-3-27

采纳的回答： Adam Danz

Hello,

I have a 1024x1280 matrix that only has the values 0 and 1.

Now I want to randomly select a cell that has the value 1.

Anybody got an idea how to do that?

Thanks

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Adam Danz 2020-3-27

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编辑：Adam Danz 2020-3-27

在 MATLAB Online 中打开

% Create matrix of 0s & 1s
M = round(rand(1024, 1280)); 
% List all indices of 1s
loc = find(M==1); 
% Randomly select one of the indices
randInd = datasample(loc, 1);  % or randInd = loc(randi(numel(loc)))
% Show the row and col number of the selection
[row, col] = ind2sub(size(M), randInd); 

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Antonio Sarusic 2020-3-27

Thank you very much!

Adam Danz 2020-3-27

Glad I could help!

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