Simon P. Kempf <simon.kempf <at> web.de> writes: [SNIP] > > But I want to skip the lm function and specify my own regression equation > RENT= 15 -0.15*AGE1 and then use the predict.lm function. However, in order > to use the predict.lm function I need an object of class lm. Is there any > way to do so? Or maybe somebody has another solution? > > Thanks in advance, > > Simon
Here is one way. Take a look at help(offset), help(lm), and help(lm.predict). > xx <- runif(30) > yy <- rnorm(30) > mydata<-data.frame(xx,yy) > lm(yy~offset(15*rep(1,30))+offset(-0.15*xx)-1,mydata) Mark Lyman ______________________________________________ R-help@stat.math.ethz.ch 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.
