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

[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
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