How to delete columns of a matrix containing specific values in bottom row

Hi. I am working on a program that generates a 2xN matrix that looks something like this

ModRows = [7 11 21 27 243 2817 3114 3489;...
           2  2  4  6  13  279   1   150]

What I want to do is search the matrix for values in the second row that are below 2 and delete the respective column, so I would get something like this, for example:

ModRows = [21 27 243 2817 3489;...
           4   6  13  279  150;]

I have no idea where to start. I can't use an index i from 1 to the size of ModRows, because whenever I delete a column, ModRows becomes shorter, resulting in an error.

Any help would be much appreciated!

Marc

Answer 1

[per isakson]

Test this:

    is_exclude = ModRows(end,:) < 2;
    ModRows( :, is_exclude ) = [];

or did you mean "<= 2"?

And search for "Using Logicals inArray Indexing" in the help

[Marc Jakobi]

Thanks. That did it. I meant "<=2"