Sorry to be dense, I am somewhat new to R. But does that mean that SafePrediction is automatically incorporated into lm.predict?
On 9/28/06, Gabor Grothendieck <[EMAIL PROTECTED]> wrote: > > See ?SafePrediction for how it works in R. > > Also the example here: > http://www.mayin.org/ajayshah/KB/R/html/o9.html > > On 9/28/06, Spencer Jones <[EMAIL PROTECTED]> wrote: > > I am fitting a regression model with a bs term and then making > predictions > > based on the model. According to some info on the internet at > > http://www.stat.auckland.ac.nz/~yee/smartpred/DummiesGuide.txt > > > > there are some problems with using predict.lm when you have a model with > > terms such as bs,ns,or poly. However when I used one of the examples > they > > said would illustrate the problems I get virtually the same results > using > > the standard predict function and "safe prediction" method they propose. > Has > > lm been updated so that it can handle terms such as bs,ns, and poly > > automatically? I am using R 2.3.0 > > > > this is their example: > > > > n <- 100 > > set.seed(86) # For reproducibility of the random numbers > > x <- sort(runif(n)) > > y <- sort(runif(n)) > > fit <- lm(y ~ bs(x, df=5)) > > plot(x, y,col="blue") > > lines(x, fitted(fit), col="black") > > newx <- seq(0, 1, len=n) > > points(newx, predict(fit, data.frame(x=newx)), type="l", col=red, > err=-1) > > > > > > thanks, > > > > Spencer > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > [email protected] 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. > > > [[alternative HTML version deleted]] ______________________________________________ [email protected] 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.
