Message-ID: <87txqc5s42.fsf@gnu.org>
Date: 2013-01-20T05:41:01Z
From: Sam Steingold
Subject: select rows with identical columns from a data frame
In-Reply-To: <50F9B85C.2000302@sapo.pt> (Rui Barradas's message of "Fri, 18 Jan 2013 21:02:20 +0000")
> * Rui Barradas <ehvconeenqnf at fncb.cg> [2013-01-18 21:02:20 +0000]:
>
> Try the following.
>
> complete.cases(f) & apply(f, 1, function(x) all(x == x[1]))
thanks, this works, but is horribly slow (dim(f) is 766,950x2)
--
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