[R] Interquartile Range

Michael Artz michaeleartz at gmail.com
Tue Apr 19 03:15:53 CEST 2016

  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
                 ,col2_mode=Mode(col2) #Function I wrote for getting the
mode shown below

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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