Hi All
I have a column/variable called time difference. It has a whole list of
numbers from 0 through to the hundreds eg 236. I want to assign a
corresponding "name" to each variable from a predefined list: Month or
less, 1 -2 months, 2-3 months etc
So the result would look something like:
Time Difference Month
1 Month or less
365 1-2 years
52 2-3 months
Etc
I have tried using if elseif (as shown below), but it kept coming up
with the error:
Error:
In if (curvedata$Date.difference == "NULL") { :
the condition has length > 1 and only the first element will be used
2: In if (curvedata$Date.difference <= 29) { :
the condition has length > 1 and only the first element will be used
3: In if (curvedata$Date.difference <= 59) { :
the condition has length > 1 and only the first element will be used
If Else Statement:
month <-if (curvedata$Date.difference =="NULL") {Month <-0} ifelse
(curvedata$Date.difference <=29) {Month <-"month or less"} else if
(curvedata$Date.difference <=59) {Month <-"1-2 months"} else if
(curvedata$Date.difference <=89) {Month <-"2-3 months"} else if
(curvedata$Date.difference <=119) {Month <-"3-4 months"} else if
(curvedata$Date.difference <=149) {Month <-"4-5 months"} else if
(curvedata$Date.difference <=179) {Month <-"5-6 months"} else if
(curvedata$Date.difference <=209) {Month <-"6-7 months"} else if
(curvedata$Date.difference <=239) {Month <-"7-8 months"} else if
(curvedata$Date.difference <=269) {Month <-"8-9 months"} else if
(curvedata$Date.difference <=299) {Month <-"9-10 months"} else if
(curvedata$Date.difference <=329) {Month <-"10-11 months"} else if
(curvedata$Date.difference <=359) {Month <-"11-12 months"} else if
(curvedata$Date.difference <=719) {Month <-"1-2 years"} else
{Month <-"More than 2 years"}
I'm pretty new to R, so any help would be appreciated.
Thanks
Jessica
_________________________________
Jessica Cathro | Business Analyst | Executive Education
London Business School | Regent's Park | London NW1 4SA | United Kingdom
Switchboard +44 (0)20 7000 7000| Direct line +44 (0)20 7000 7383 |
Email [email protected] <mailto:[email protected]>
www.london.edu <http://www.london.edu/> | London experience. World
impact.
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System
on behalf of the London Business School community.
For more information please visit http://www.messagelabs.com/email
______________________________________________________________________
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.