Python Argmin function in MATLAB ( Finding an indexing in AxBxC array in specific colomn)
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I have an matrix as dimensions 11x360x1360. I have to find the minimum indexes in each (11) column. In python i can do this operation with np.argmin(abs(x),axis = 0)). How can i do that in MATLAB? I have to search minimum index in 1x360x1360,2x360x1360 and my output should be 360x1360 and values in output should be 1,2,3,4,5,6,7,8,9,10,11('11' values).
回答（1 个）
Aditya Patil
2020-9-22
You can pass the linear option of the min function when you want to find the index of the minimum over multiple dimensions. Then use the ind2sub function to get subscript indices from the linear one's.
matrix = rand([11,360,1360]);
[value, index] = min(matrix, [], [2, 3], 'linear');
[I1, I2, I3] = ind2sub(size(matrix), index);
9 个评论
Emre Can Ertekin
2020-9-22
Aditya Patil
2020-9-23
can you elaborate the issue you are facing?
Emre Can Ertekin
2020-9-23
Aditya Patil
2020-9-24
What version of MATLAB are you using?
Emre Can Ertekin
2020-9-24
Emre Can Ertekin
2020-9-24
Aditya Patil
2020-9-25
You can get the 360x1360 matrix by providing only the first dimension as such,
A(1,:,:)
If you want to change a specific value, then provide all three indices. You can also use the linear indices for this.
Emre Can Ertekin
2020-9-25
Aditya Patil
2020-9-28
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