On Oct 9, 2012, at 2:30 PM, bobo wrote: > Hi good R folks, > > I am hoping that you could help me resolve this issue. I tried finding > answers online but to no avail. > > I keep getting this "Error in x^2 : non-numeric argument to binary operator" > using multiple different codes, ones which have been verified to work by my > professor and other students. > > I tried reinstalling R completely and it still didn't fix the issue. > > I am using the latest version and Mac 10.8.2. > > Thank you! > > I am posting the code where the error occurred below: > > library(foreign) > library(lmtest) > library(car) > > x.1 <- runif(1000,0,1) > > x.2 <- rbinom(1000,1,.5) > > b.1 <- 10 > b.2 <- 2 > > mu <- 1+(x.1*b.1) + (x.2*b.2) > > Z <- cbind(x.1) > > gamma <- 10 > > sigma2 <- exp(2+Z*gamma) > > y <- mu +rnorm(1000) * sqrt(sigma2) > > lm.y<-lm(y~x.1+x.2) > > "Error in x^2 : non-numeric argument to binary operator"
Well, something is strange here. Your error message is stating that the interpreter was unable to find x^2, but you have no x^2 expression in your code. I ran the code (except for the library calls which were clearly not needed for those commands. No error. I then loaded the packages and re-ran the code. Again, no errors. > > summary(lm.y) You probably need to restart R with the --vanilla option or if you are using a GUI, locate and rename the .Rdata file and then restart. If the error persist, you should post sessionInfo() results. -- David Winsemius, MD Alameda, CA, USA ______________________________________________ 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.
