> In SPSS, my syntax would look like > > Compute RiskTest=0. > if (EvHint=1 & MinTex=1) RiskTest=1.
RiskTest <- EvHint == 1 & MinTex == 1 will create a logical vector, one with values TRUE and FALSE. If you really want 1 and 0 then add RiskTest <- as.integer(RiskTest), but using logicals instead of 0/1 variables seems more logical to me (then you can get rid of all those ==1's). Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf > Of Virgile Capo-Chichi > Sent: Tuesday, November 20, 2012 11:09 AM > To: r-help@r-project.org > Subject: [R] Using if > > Dear R users, > > As a new comer to R, I would like to create a new variable using if > statements but don't know how to do it. Basically, I have two variables > (EvHint and MinTex). I want to create a third variable called RiskTest. > > In SPSS, my syntax would look like > > Compute RiskTest=0. > if (EvHint=1 & MinTex=1) RiskTest=1. > > Question: How do I do this with R? > > My Data > > EvHint<-c(0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0) > MinTex<-c(0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0) > > Thanks, V > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org 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. ______________________________________________ R-help@r-project.org 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.
