creating a function to subset data frame in R

Question

I am trying to write a function in R to subset data based on ID in a data frame like below, but the function I wrote does not work and it doesn't give me an error message either. Can someone let me know how to fix my function code?

subset1<-function(id){df2<-df[df$ID==id,]}

enter image description here

Do you need to write your own function? Else, if you want to filter rows, use dplyr::filter(df, ID == id), or use dplyr::select to select columns, — Daniel
– Daniel, Commented May 18, 2016 at 13:16

akrun · Accepted Answer · 2016-05-18 13:16:40Z

3

We can use [[ inside a function

f1 <- function(id){
      df[df[["ID"]] == id,]
    }
f1(11)
#  ID Item
#1 11    a

answered May 18, 2016 at 13:16

akrun

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1 Comment

Blue_Lion Over a year ago

Ohh! Thanks for such a quick response..! This works perfectly!

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