Taking part of a matrix.

[Didier Lachieze]

(06-30-2021 01:25 PM)Isai Wrote:  Is there any way of take part of a matrix? For example in Matlab it could be A(i:j,m:n) to take from i to j rows and m to n columns.

From the section "Matrix references" in the Prime manual:

Quote:M1({{1,1},{2,2}}) extracts a sub-matrix from the element in the first row and column to the element in the second row and column.

So your Mathlab example for A(i:j,m:n) would translate on the Prime to M1({{i,m},{j,n}})