minimun value in 2D array
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Can some body show me how to find minimum value in an image or 2D array along with its index. Regards
回答（2 个）
Sean de Wolski
2011-12-19
doc min;
And an example:
A = magic(100);
[Amin minidx] = min(A(:));
Kevin Schroeder
2021-11-9
I think you are looking for the minimum across both dimensions; something like this:
A = magic(5);
minValue = min(min(A));
[ind1, ind2] = find(A==minValue);
There are other ways to do this. For example, you can reshape the 2D array into a 1D array, and call min(), but then you have to convert the index back to the equivalent value for the 2D array using ind2sub(). I'm not sure wich is fast for large arrays, but the above method is more intuitive (in my opinion).
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2011-12-19
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