How to remove unwanted elements of a array

I have two arrays with unwanted data at the beginning and end of each array (Stress and del L). What is an easy way to remove these elements?

Answer 1

[WAT]

If you want to get rid of indices 1 through 3 (for example) then

 array(1:3) = [];

[Hyunjung Lee]

Thank you! I am not the original poster, but this helped me with removing array elements specified in an index vector. Before looking at your reply, I tried a(~idx,:) to try to only keep rows other than those specified by an index vector idx, but it didn't work. Thanks again!