[R] Remove cases with -Inf from a data frame

Bert Gunter
Sat, 16 Feb 2019 16:29:19 -0000

Sorry, that's

function(x)all(is.finite(x) | is.na(x) )

of course.


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 Sat, Feb 16, 2019 at 8:25 AM Bert Gunter <bgunter.4567 at gmail.com>
wrote:

> Many ways. I assume you know that Inf and -Inf are (special) numeric
> values that can be treated like other numerics. i.e.
>
> > 1 == - Inf
> [1] FALSE
>
> So straightforward indexing (selection) would do it.
> But there is also ?is.infinite and ?is.finite, so
>
> apply(yourdat, 1, function(x)all(is.finite(x)))
>
> would produce the index vector to keep rows with only finite values
> assuming yourdat contains only numeric data. If this is not the case, just
> select the numeric columns to index on, i.e.
>
> apply(yourdat[sapply(yourdat,is.numeric)], 1, function(x)
> all(is.finite(x)))
>
> One possible problem here is handling of NA's:
>
> is.finite(c(-Inf,NA))
> [1] FALSE FALSE
> ... so rows containing NA's but no -Inf's would also get removed.
If you
> wish to keep rows with NA's but no -Inf's, then
>
> function(x)(is.finite(x) | is.na(x) )
>
> could be used.
>
> 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 Sat, Feb 16, 2019 at 7:07 AM AbouEl-Makarim Aboueissa <
> abouelmakarim1962 at gmail.com> wrote:
>
>> Dear All: good morning
>>
>>
>> I have a log-transformed data frame with some *-Inf* data values.
>>
>> *my question: *how to remove all rows with *-Inf* data value from that
>> data
>> frame?
>>
>>
>> with many thanks
>> abou
>> ______________________
>>
>>
>> *AbouEl-Makarim Aboueissa, PhD*
>>
>> *Professor, Statistics and Data Science*
>> *Graduate Coordinator*
>>
>> *Department of Mathematics and Statistics*
>> *University of Southern Maine*
>>
>>         [[alternative HTML version deleted]]
>>
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