How to swap multiple rows of a matrix at a time

Hi. I have a fairly large matrix (generated from an image) that I need to swap rows in. I need to swap multiple rows at a time (rows 1:63 with rows 142:201, roughly) and display this new image. I see a lot of examples of swapping indivual rows in small matrices, but nothing about swapping multiple rows at a time or swapping rows in large matrices, so how do I do this?

Answer 1

[James Tursa]

A = your matrix
A([1:63,142:202],:) = A([142:202,1:63],:);

[Meghan Holland]

Thank you so much!