Nice!
I didn’t realize you could do all that!
Thanks!
On Fri, Sep 21, 2018 at 10:32 AM William Dunlap <wdun...@tibco.com> wrote:
> Since you are using tibbles you may want to go whole-hog and use the dplyr
> package as well.
>
> > xt <-
> tibble(x=LETTERS[1:4],y=1:4,z=log2(1:4),a=c("dog","cat","tree","ferret"))
> > xt %>% summarize(yMean=mean(y), zMean=mean(z), aLast=last(a))
> # A tibble: 1 x 3
> yMean zMean aLast
> <dbl> <dbl> <chr>
> 1 2.5 1.15 ferret
>
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
> On Thu, Sep 20, 2018 at 5:50 PM, Erin Hodgess <erinm.hodg...@gmail.com>
> wrote:
>
>> Hello!
>>
>> Here is a toy tibble problem:
>>
>> xt <-
>> tibble(x=LETTERS[1:4],y=1:4,z=rnorm(4),a=c("dog","cat","tree","ferret"))
>> str(xt)
>> Classes ‘tbl_df’, ‘tbl’ and 'data.frame': 4 obs. of 4 variables:
>> $ x: chr "A" "B" "C" "D"
>> $ y: int 1 2 3 4
>> $ z: num 0.3246 0.0504 0.339 0.4872
>> $ a: chr "dog" "cat" "tree" "ferret"
>> #No surprise
>> xt %>% mean
>> [1] NA
>> Warning message:
>> In mean.default(.) : argument is not numeric or logical: returning NA
>> #surprised!
>> mean(xt[2:3])
>> [1] NA
>> Warning message:
>> In mean.default(xt[2:3]) : argument is not numeric or logical: returning
>> NA
>> xt[, 2:3] %>% mean
>> [1] NA
>> Warning message:
>> In mean.default(.) : argument is not numeric or logical: returning NA
>>
>> I have a feeling that I'm doing something silly wrong. Has anyone run
>> into
>> this, please? I saw something like this on this list, but didn't see a
>> solution.
>>
>> Thanks,
>> Erin
>>
>>
>> Erin Hodgess, PhD
>> mailto: erinm.hodg...@gmail.com
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@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.
>>
>
> --
Erin Hodgess, PhD
mailto: erinm.hodg...@gmail.com
[[alternative HTML version deleted]]
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
