Hi > > > Hello, > > I am new to R and have a couple of questions. My data set contains the > variables "Bwt" and "Hwt", which are bodyweight and heartweight, > respectively, of a group of cats. > With the following code, I am making two plots, both to be viewed in > the same plot window in R: > > library(MASS) > maleData <- subset(cats, Sex == "M") > linreg0 <- lm(maleData$Hwt ~ maleData$Bwt)
The second question is answered by: linreg0 <- lm(Hwt ~ Bwt, data=maleData) after that your predict code works. > par(mfrow=c(1,2)) > plot(maleData$Hwt ~ maleData$Bwt) > plot(rstandard(linreg0) ~ fitted(linreg0)) > > My problem is that the two plots end up all oblong and squashed, > because the plot window doesn't have a size suited for having two plots > next to one another. Can I tell R to adjust the plot window? Can you use mouse for resizing? Regards Petr > > Also, I would like to do something along the lines of: > > newData <- data.frame(Bwt = 3.5) > predict(linreg0,newData,interval="p") > > This doesn't work - my guess is that to R, "Bwt" is not a variable in > maleData, but maleData$Bwt is. I could use an attach command, but is it > possible to get this to work without doing so? > > Kind regards, > Rasmus Hedegaard. > [[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.
