Interquartile Range

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()

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