Re: [R] substring from behind

nombre de Jorge I Velez > Enviado el: miércoles, 30 de enero de 2013 10:50 > Para: Mat > CC: r-help@r-project.org > Asunto: Re: [R] substring from behind > > Hi Mat, > > The following should get you started: > > > s <- "Mercedes_02352" > > substr(s, nc

Re: [R] substring from behind

From: Mat To: r-help@r-project.org Cc: Sent: Wednesday, January 30, 2013 4:05 AM Subject: [R] substring from behind Hello together, i have a question for "substring". I know i can filter a number like this one: bill$No<-substring(bill$Customer,2,4) in this case i get the 2nd, 3rd an

Re: [R] substring from behind

Hi Mat, The following should get you started: > s <- "Mercedes_02352" > substr(s, nchar(s) - 3, nchar(s) - 1) [1] "235" > > # defining a function > foo <- function(x, a = 3, b = 1) substr(s, nchar(x) - a, nchar(x) - b) > foo(s) [1] "235" HTH, Jorge.- On Wed, Jan 30, 2013 at 8:05 PM, Mat <> wr

[R] substring from behind

Hello together, i have a question for "substring". I know i can filter a number like this one: bill$No<-substring(bill$Customer,2,4) in this case i get the 2nd, 3rd and 4th number of my Customer ID. But how can i do this, if i want the 2nd, 3rd and 4th number of a column. Like this one. I have: