[R] removing NA from a data frame

[Berton Gunter]

> If you do not feel like answering a question, it is perfectly 
> fine with
> me, I do not think that anyone owes me anything.
> All I am asking is that if you do decide to answer, please make your
> answer immediately useful, i.e., not requiring learning all 
> the manual by
> heart (a specific manual section is perfectly fine though).
> Thanks.
>
 
But do you not owe the list the courtesy of first making a reasonable
attempt on your own?


> PPS. how do I figure out the number of rows in a data.frame?
>      is length(attr(X,"row.names")) the right way?

help.search("number of rows") immediately gets you your answer!

-- Bert Gunter
Genentech