MATLAB: Matrix question (finding the smallest number in each row)

matrix

I have a matrix B, of size 1455×2. I want a matrix C of size 1455×2 which gives me the matrix B but, if there is a non-negative row, it should be a row of zeros.

Then once I have this C, I want a matrix D which gives me the location of the minimum in each row of C.

Best Answer

 [~,min_col]=min(B,[],2)

This gives you a 1455x1 vector with the column-number of the smallest element in in the rows. To also get the minimum values of each row, you can replace '~' with a variable that you want to assign to those values.

Related Solutions

MATLAB: Minimum value of row

A = magic(6);  % Given array.
[MN,I] = min(A,[],2) % Minimum of each row, and index

Also, whenever you have a question like this, you should turn to the MATLAB documentation. For example, you know you want to find the minimum, so do this:

docsearch('minimum')

MATLAB: Maximum of a row in a matrix

Use max, and some indexing if needed:

A = [...]; % some matrix
N = 3; % the row that you want
max(A(N,:))

Best Answer

Related Solutions

MATLAB: Minimum value of row

MATLAB: Maximum of a row in a matrix

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