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