> From: Tiago R Magalhaes > > Hi > I have two basic questions, and here they go, but I was wondering as > well where can I ask these basic questions without bothering you > people > > > I've used Splus and now I'm using R and there's some functions that I > can't simply find > > one: > sort.col > that allows data.frames to be sort by a given col > (I saw the funtion sort but that's for vectors. and I can't believe I > can't find the function for data.frames)
This is sort of an FAQ. The short answer is to use order(). I've posted a suggestion for a sort() method for data.frame the last time this was asked. You can find it in the list archive. > the other function I wanted to know: > convert.col.type > that converts a given column of a data frame from let's say integer > to characters This can usually be done by something like: dat$thiscol <- as.blah(dat$thiscol) [replace `as.blah' appropriately; e.g., as.character(), etc.] Just be careful with factors. Andy > Once again I'm sorry for these basic questions and since predictably > I'll have more of those if there's a basic-questions-list I would > love to know more about it > > thanks > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
