r - Error in sample(1:17260(E), 20) : attempt to apply non-function -

it's possibly stupid question, i'm getting error message simple piece of code in r:

  s20_1 = e[sample(1:17260(e), 20),] 

the error message is:

error in sample(1:17260(e), 20) : attempt apply non-function

e dataframe 17260 rows. code based on 1 found here: sample random rows in dataframe.

any appreciated. cheers!

the error message tells wrong. try change line this:

s20_1 = e[sample(nrow(e), 20),] 

or, since know size of e

s20_1 = e[sample(1:17260, 20),] 

though recommend first method of course.

hope helps.