[R] how to skip NA columns ?

[Czerminski, Ryszard]

R-helpers!

na.omit() can be used to remove rows with NA's
but how can I remove columns ? and remember, which columns have been removed
?

I guess I can do t(na.omit(t(o))) as shown below, but this probably creates
a lot of overhead and I do not know which columns
have been removed.

Yours,

R

> o  
     [,1] [,2] [,3]
[1,]    1   NA    7
[2,]    2   NA    8
[3,]    3   NA    9
> t(na.omit(t(o)))
     [,1] [,2]
[1,]    1    7
[2,]    2    8
[3,]    3    9

Ryszard Czerminski   phone: (781)994-0479
ArQule, Inc.         email:ryszard at arqule.com
19 Presidential Way  http://www.arqule.com
Woburn, MA 01801     fax: (781)994-0679

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