How to make multiple matrices from a single matrix with certain rows and columns?

Hi,

I have to split a large matrix in multiple submatrices with certain rows and columns. Here is how my matrix named 'test' looks like:

   0   10   20   30   40
   100 200  300  400  500
   200 300  400  500  600
   300 500  400  400  400
   100 300  300  400  500

Now I need to split it into four matrices with file extension names carrying the first rows numbers (except 0) e.g. test_10, test_20, test_30, test_40 and submatrices as below: test_10 will have 2:5 rows and 1st and 2nd columns, test_20 will have 2:5 rows and 1st and third column, test_30 will have 2:5 rows and 1st and 4th columns and test_40 will have 2:5 rows and 1st and 5th columns. Thank you in advance and I really appreciate your help.

Answer 1

[Abhijeet]

Please use the following code format to break matrix into multiple matrices :

matrix = [0   10   20   30   40;         100 200  300  400  500;         200 300  400  500  600;         300 500  400  400  400;         100 300  300  400  500];

test_10 = matrix(2:5, [1, 2]);
test_20 = matrix(2:5, [1, 3]);
test_30 = matrix(2:5, [1, 4]);
test_40 = matrix(2:5, [2, 5]

test_40 = 4×2

200 500 300 600 500 400 300 500

% A sample output of test_40 has been printed for reference