Removing certain lines of text from a cell array

I have a 53218x1 cell named N1. It is a cell consisting of the names of galaxies I have taken from a loaded ASCII catalog. I need to remove galaxies that have the first three letters starting with 'ESO'. There are 5,980 of these lines of code I have to remove. How would I do that? Would a 'for loop' work?

SIDE NOTE: these words all are 1x10 char in N1.

Answer 1

[Titus Edelhofer]

Hi,

that should be fairly straight forward:

% find the indices of ESO
idx = strncmp(N1, 'ESO', 3);

% and remove them:
N1(idx) = [];

Titus

Answer 2

[Azzi Abdelmalek]

v={'esoabcd';'abcgd';'ehdf';'esoez'}
out=v(cellfun(@isempty,regexp(v,'(?<=eso).+')))

[jgillis16]

Can you elaborate on what that means and does?

[Azzi Abdelmalek]

http://www.mathworks.com/help/matlab/ref/regexp.html