Intersection of row and column

Hi, I am triyng to make a new with the elements extracted from the intresection of the rows 4,5,6 with the columns 1,3,6 from this matrix.

Answer 1

[Prakash S R]

I assume you are trying to form a new 3x3 matrix G from rows and columns of H. You can do this by specifying the indices of interest:

G = H([4,5,6], [1,3,6])

[Anca Toma]

thank you!

Answer 2

[Image Analyst]

H = [1 0 0 -1 0 0;...
    0 1 0 0 -1 0;...
    0 0 1 0 0 -1;...
    2 0 1 2 0 1;...
    1 1 1 1 1 1;...
    -1 2 -2 -1 2 -2];
M = H([4,5,6], [1,3,6])

M = 3×3

2 1 1 1 1 1 -1 -2 -2

[Anca Toma]

thank you! it works