Generally, you can create formula from string: lda(formula(paste(names(iris)[5],"~.")),iris)
On 12/28/06, Gabor Grothendieck <[EMAIL PROTECTED]> wrote: > Try: > > lda(iris[-5], iris[,5]) > > On 12/26/06, Feng Qiu <[EMAIL PROTECTED]> wrote: > > Hi everyone: > > I'm trying to compose a string dynamicly for the parameter input > of > > some function. For example: > > In package MASS, function lda() require to input the name of predictor > > variable. Let's say the 16th column is the predictor variable. Then we > call > > the function like this: lda(V16~., data=mydata). I don't want to hard-code > > the call, instead, I would like to use a dynamic expression for this > > parameter so that I can use my program on different set of data. > > I guess there,- are some function that can do this, but I didn't > find > > it in "Introduction to R" so far, could someone please tell me this kind > of > > function? Thank you! > > > > Best, > > > > Feng > > > > ______________________________________________ > > 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. > > > > ______________________________________________ > 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. > ______________________________________________ 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.
