[R] Question about subset

[Bert Gunter]

Please read the "Details" section of the help file -- it essentially
tells you what to do by directly using indexing; e.g. for a vector,
index by:
[is.na(subset) | subset]  .

Adjust as necessary for your data structure.Or look at the code of,
e.g. subset.data.frame and create your own subset version/method by
making the trivial modification to that code.

R is open source. Sometimes it's worthwhile to take advantage of this
by making a simple modification to its code on your own before hunting
for packages.

Cheers,
Bert



Cheers,
Bert
Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Sun, Apr 8, 2018 at 9:06 PM, Sebastien Bihorel
<sebastien.bihorel using cognigencorp.com> wrote:
> Hi,
>
> The help page for subset states "subset: logical expression indicating elements or rows to keep: missing values are taken as false."
>
> Before I try to re-invent the wheel, I would like to know if one of the base or recommended packages would contain a variant of the subset function that would consider missing values as true.
>
> Thanks
>
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.