[R] Na.omit on matrix, does the matrix have to have a limited size

[Charles C. Berry]

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