Re: [R] subset without removing NAs

From: Benjamin Caldwell <btcaldwell_at_berkeley.edu>
Date: Thu, 28 Apr 2011 14:06:35 -0700

Thanks, that worked.
*Ben Caldwell*

On Thu, Apr 28, 2011 at 2:02 PM, David Winsemius <dwinsemius_at_comcast.net>wrote:

>
> On Apr 28, 2011, at 3:53 PM, Benjamin Caldwell wrote:
>
> Hi folks,
>>
>> I'm dealing with a dataset with a lot of NAs, and want to use subset on
>> the
>> data without removing the NAs from the the dataframe; e.g.
>>
>> rws50 <- subset(rw.fire.RW,shigo.av<50)
>>
>> This removes instances with NA for the value in addition to anything <50.
>> Any suggestions much appreciated.
>>
>
> If you use "[" instead the NA's will come though:
>
> rw.fire.RW[ shigo.av<50, ]
>
> In fact I generally wrap my logicals in which to avoid such (mis?)behavior.
> but you appear to approve of it.
>
> ==
> David Winsemius, MD
> West Hartford, CT
>
>

        [[alternative HTML version deleted]]



R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Thu 28 Apr 2011 - 21:09:05 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 28 Apr 2011 - 21:40:34 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive