MATLAB: Search columns of a matrix

columnfindindexindexingmatrixmatrix operations

Disclaimer: I have about a month of experience with Matlab so bare with me.

I have a matrix of test scores where each column is associated with a different student. I want to find the lowest score for each student, i.e. I want to find the minimum value in each column. Whats the best way to go about doing this?

Best Answer

min(matrix) % will return the minimum value in each column

Where matrix is the matrix which contains test scores

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

 [~,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.

MATLAB: Help with max function

This code will return the row and column indices where the entry is equal to the column's maximum.

[rowIdx,colIdx] = find(A==max(A))

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

MATLAB: Help with max function

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