Hi,
I'm really confused about your question. For many reasons:
- because I'm a beginner myself?
- what are you trying to do with x1? You define the levels of x1, but
you don't give any values to it. Which could (also) explain why your
code does not work
- your if...else statement is weird for me. I think it should more look
like: if(x1=="something") {x2 <- 1} else {...}
Curly braces are necessary when you have more than one statement as
expression. See ?"if" and ?ifelse.
- what are you trying to do? it looks like you're trying to recode the
factors. Why? Factors are already stored as integers in R. Maybe some
more insights into what you're trying to do at the large scale would help.
HTH,
Ivan
Le 5/27/2010 15:59, Simon Kiss a écrit :
Dear colleagues,
I want to calculate the value of x2 based on the value of x1. x1 is a
factor with three separate levels. I want to make sure that missing
values remain as NA in X2, but non-missing values take on a value of
either 0 or 1 dependending on the value in x1.
This is the code I'm working with...Can any one help?
I've seen some other requests on a topic like this, but not using
factors with strings as levels; only with numeric variables.
Simon
x1<-factor(levels="social and cultural specialists", "labour",
"salariat")
x2<-if(x1==c("social and cultural specialists")) "1" elseif (x1==NA)
"NA" else "0"
*********************************
Simon J. Kiss, PhD
SSHRC and DAAD Post-Doctoral Fellow
John F. Kennedy Institute of North America Studies
Free University of Berlin
Lansstraße 7-9
14195 Berlin, Germany
Cell: +49 (0)1525-300-2812,
Web: http://www.jfki.fu-berlin.de/index.html
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--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calan...@uni-hamburg.de
**********
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
