minimun value in 2D array

75 次查看（过去 30 天）
Khawaja Asim
Khawaja Asim 2011-12-19
回答： Kevin Schroeder 2021-11-9
Can some body show me how to find minimum value in an image or 2D array along with its index. Regards

请先登录，再回答此问题。

回答（2 个）

Sean de Wolski
Sean de Wolski 2011-12-19
doc min;
And an example:
A = magic(100);
[Amin minidx] = min(A(:));
Kevin Schroeder
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).

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by