MATLAB: How to find the indices of elements in an array

indexmatrix array

I have a 103×103 array of values, in which i have to take the smallest values and get the respective (i,j) indices of those values. Can someone help me out with this problem.

Best Answer

[r,c]=find(matrix==min(matrix(:)))

#Added

Get the values

matrix(matrix==min(matrix(:)))

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MATLAB: Find min value in 4D matrix and index of min value

[minval, minidx] = min(A(:));
[i, j, k, l] = ind2sub( size(A), minidx );

MATLAB: Find local maxima of a matrix and the neighboring elements

Include the surrounding elements: imdilate your regionalmax binary image by the relevant structuring element. If you just want the orthogonal neighbours:

C = imdilate(B, [0 1 0;1 1 1;0 1 0])  %or imdilate(B, strel('diamond', 1))

If you also want the diagonal neighbours:

C = imdilate(B, ones(3)   %or imdilate(B, strel('square', 3))

Get the position (i,j) of the elements:

[row, column] = find(C)

Best Answer

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MATLAB: Find min value in 4D matrix and index of min value

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