Index from one vector to different sized vector
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I have a 582x1 column vector and a 3190x2 matrix. I want to extract only those rows of the matrix whose column 1 entry has the same value as any entry in the 582 vector. I can't figure out how to index in this way. I tried changing the size of the column vector to 3190, but it still only compared the entries with the same indexes.
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Asad (Mehrzad) Khoddam
on 12 Sep 2020
% v1 the first vector
% v2 the matrix
[~, ~, i2] = intersect(v1, v2(:,1));
newMatrix = v2(t2,:);
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