How to get a random 50x14 matrix from 300x14 matrix
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Amirali AGHAMIRI
el 27 de Mzo. de 2022
Comentada: Amirali AGHAMIRI
el 28 de Mzo. de 2022
Hello,
Could you please tell me how to get a random 50x14 matrix from 300x14 matrix?
Respuesta aceptada
Image Analyst
el 27 de Mzo. de 2022
Perhaps this, if you want all 50 rows to be adjacent to each other and not randomly chosen.
% Define matrix.
m = randi(9, 300, 14)
% Get starting and ending rows
startingRow = randi(size(m, 1)-49, 1, 1)
endingRow = startingRow + 49
% Extract a band of 50 contiguous rows
m50 = m(startingRow : endingRow, :);
3 comentarios
Image Analyst
el 28 de Mzo. de 2022
So just delete the first line where I created an m. I just did that because you keep forgetting to attach your actual matrix in a .mat file with the paperclip icon.
% Get starting and ending rows
startingRow = randi(300-49, 1, 1)
endingRow = startingRow + 49
As you can see above when I ran it, it would take all rows between 207 and 256 of your original matrix and extract them to a new matrix called m50. Why do you think that will not work for your matrix?
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