MATLAB: How to distribute 100 ones in 100 by 100 matrix randomly in all posibilities

binaryMATLABmatrix array

I want to make binary matrix, and distribute 100 ones in it, randomly in all possibilities.

What command I have to use plz help.

Best Answer

indices = randi(1e4,100,1);
x = zeros(100,100);
x(indices) = 1;

Related Solutions

MATLAB: Random matrix with fix summation

For older versions of MATLAB without the randperm(n,k) syntax enabled,

      n=500^2;
      m=7000;
      idx=randperm(n);
      z=[ones(1,m), zeros(1,n-m)];
      a=reshape(z(idx),500,500);

MATLAB: How to set pixel values in 100*100 matrix

Try something like this

img = zeros(100, 'uint8');
idx_all = 1:numel(img);
idxs = cell(1,3);
for i = 1:numel(idxs)-1
    idx_temp = randperm(numel(idx_all), round(numel(img)/3));
    idxs{i} = idx_all(idx_temp);
    idx_all(idx_temp) = [];
end
idxs{end} = idx_all;
img(idxs{1}) = 50;
img(idxs{2}) = 100;
img(idxs{3}) = 200;

Best Answer

Related Solutions

MATLAB: Random matrix with fix summation

MATLAB: How to set pixel values in 100*100 matrix

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