[R] Interquartile Range

[Bert Gunter]

Are you aware that there *already is* a function that does this?

?IQR

(also your "function" iqr" is just a character string and would have
to be parsed and evaluated to become a function. But this is a
TERRIBLE way to do things in R as it completely circumvents R's
central functional programming paradigm).

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 Tue, Apr 19, 2016 at 7:56 AM, Michael Artz <michaeleartz at gmail.com> wrote:
> That didn't work Jim!
>
> Thanks anyway
>
> On Mon, Apr 18, 2016 at 9:02 PM, Jim Lemon <drjimlemon at gmail.com> wrote:
>
>> Hi Michael,
>> At a guess, try this:
>>
>> iqr<-function(x) {
>>  return(paste(round(quantile(x,0.25),0),round(quantile(x,0.75),0),sep="-")
>> }
>>
>> .col3_Range=iqr(datat$tenure)
>>
>> Jim
>>
>>
>>
>> On Tue, Apr 19, 2016 at 11:15 AM, Michael Artz <michaeleartz at gmail.com>
>> wrote:
>> > Hi,
>> >   I am trying to show an interquartile range while grouping values using
>> > the function ddply().  So my function call now is like
>> >
>> > groupedAll <- ddply(data
>> >                  ,~groupColumn
>> >                  ,summarise
>> >                  ,col1_mean=mean(col1)
>> >                  ,col2_mode=Mode(col2) #Function I wrote for getting the
>> > mode shown below
>> >
>> >  ,col3_Range=paste(as.character(round(quantile(datat$tenure,c(.25)))),
>> > as.character(round(quantile(data$tenure,c(.75)))), sep = "-")
>> >                  )
>> >
>> > #custom Mode function
>> > Mode <- function(x) {
>> >   ux <- unique(x)
>> >   ux[which.max(tabulate(match(x, ux)))]
>> > }
>> >
>> > I am not sre what is going wrong on my interquartile range function, it
>> > works on its own outside of ddply()
>> >
>> >         [[alternative HTML version deleted]]
>> >
>> > ______________________________________________
>> > R-help at 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.
>>
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.