Message-ID: <Pine.LNX.4.64.1001211615380.13593@tajo.ucsd.edu>
Date: 2010-01-22T00:22:52Z
From: Charles C. Berry
Subject: Na.omit on matrix, does the matrix have to have a limited size
In-Reply-To: <1264115646712-1069099.post@n4.nabble.com>
On Thu, 21 Jan 2010, anna wrote:
[in response to a suggestion (that was deleted in this reply) that there
are NAs where OP did not expect them]
>
> No, the NA values are in the same rows and there are only 28 of missing value
> rows...
Sorry, but I'm with Peter on this one. You must have NAs in the other
columns.
What do these return?
dim( mat )
table( rowSums( !is.na( mat ) ) )
table( colSums( !is.na( mat ) ) )
(where 'mat' is the matrix or data.frame that you are using)
Chuck
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Charles C. Berry (858) 534-2098
Dept of Family/Preventive Medicine
E mailto:cberry at tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901