MATLAB Answers


Extract columns from matrices

Asked by Gaetano Pavone on 13 Oct 2019
Latest activity Commented on by Stephen Cobeldick on 14 Oct 2019
I have a large number of .mat files, and each one contains three matrices named "matrx_1", "matrix_2" and "matrix_3" with different size.
I would like to extract, for example, the 6th and the 9th columns of each matrix "matrix_1" in two different arrays and then plot them. At the same time, I would like to repeat this operation for the 8th column of the matrix "matrix_2" and with the 10th column of matrix "matrix_3".
How can I do this? Thanks


on 14 Oct 2019
What is wrong with just doing the obvious - load the mat files in a loop, index into the relevant matrices, store those columns and plot at the end? Are the matrices too big?
I'm a beginner in Matlab, could you post your suggestion please?

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