MATLAB: Searching for vector values in a matrix

indeciesMATLABmatrixvector

Hi, I have a vector with 3 specific values and I want to find their indices in a matrix.

Best Answer

% Creating a sample matrix
yourMatrix=reshape(1:15,5,3)
yourMatrix =
1 6 11
2 7 12
3 8 13
4 9 14
5 10 15
% Creating a sample vector with three values.
yourVector=[1,7,14];
% Now getting the row and cols of those values.
[rows, cols]=ind2sub( size(yourMatrix), ...
arrayfun(@(v) find(yourMatrix==v), ...
yourVector(:)) )
rows =
1
2
4
cols =
1
2
3
The rows and cols of 1,7,14 (the three specific values) are provided. If you are looking only for linear index number then just run:
linIndex=arrayfun(@(v) find(yourMatrix==v), yourVector(:))