[S] Re: Extracting rows of a matrix with positive elements

Rolf Turner (rolf@math.unb.ca)
Sat, 21 Feb 1998 10:17:49 -0400 (AST)

> A method that will work, on a matrix denoted y, is
> y[(((y > 0) - 1) %*% rep(1, ncol(y))) == 0, ].
> Perhaps someone else will come up with an easier way.

I think that


is sexier, if not easier.


Rolf Turner
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