Find the negative entries in a array.

Hi everybody! I am new to Matlab and I have been using it for like one week. Now I got stuck because I need to individuate the negative entries of an array in order to modify them: I wonder then if there's a way to get the position (row and column) of these entries in the array of interest.

Thanks in advance!

Answer 1

[Mischa Kim]

E, use

 [row col] = find(a<0)