Petr Pikal wrote: > Hi > > you are correct as usually. It is about 10 versions 1.2.0 - 2.2.1 and > as there are 2 versions per year it is about 4-5 years. > > But nevertheless it seems to me as if I used R forever (and hopefully > it will continue) > > Anyway subsetting data frames **was** similar in the old versions as > it is now, wasn't it?
Yes, AFAIR, and just tested in 1.2.2. Uwe Ligges > Cheers > Petr > > On 7 Feb 2006 at 8:56, Uwe Ligges wrote: > > Date sent: Tue, 07 Feb 2006 08:56:10 +0100 > From: Uwe Ligges <[EMAIL PROTECTED]> > Organization: Fachbereich Statistik, Universitaet Dortmund > To: Petr Pikal <[EMAIL PROTECTED]> > Copies to: [email protected], ivo welch <[EMAIL PROTECTED]> > Subject: Re: [R] R loop > > >>Petr Pikal wrote: >> >> >>>Hi >>> >>>On 6 Feb 2006 at 15:57, ivo welch wrote: >>> >>>Date sent: Mon, 6 Feb 2006 15:57:30 -0500 >>>From: ivo welch <[EMAIL PROTECTED]> >>>To: Sean Davis <[EMAIL PROTECTED]> >>>Copies to: [EMAIL PROTECTED], r-help >>><[email protected]> Subject: Re: [R] R loop >>> >>> >>> >>>>>>data[ data$a == "name2" ] # does not work and gives a weird >>>>>>result, yuck >>>>> >>>>>data[data$a=="name2",] >>>>> >>>> >>>>sorry about this. I believe a few versions back, one could not >>>>subset data frames, so I did not even check what I wrote. Works >>>>now. >>> >>> >>>It depends on what you consider few versions back. I started with R >>>vesion 1.2.0 about 10 years >> >>I bet 200$ (or EUR) you have not used R 10 years ago. ;-) >> >>People certainly remember the 1.0.0 release at the remarkable day >>29-FEB-2000. 1.2.0 was released in December 2000, about 5 years ago. I >>started with 0.62.x in 1998. The oldest version I found on CRAN is a >>pre-alpha R.sea.hqx for the Mac >> dated 07-Nov-1996. >> >> >>Uwe Ligges >> >> >> >> >> >> >>>ago and I believe that data frame >>>subsetting was done in **very** similar manner as it is performed >>>now. >>> >>>Cheers >>>Petr >>> >>> >>> >>>>>Look at ?order. >>>> >>>>I know. This is why I suggested only that we need a wrapper that >>>>plugs an order() functionality into the sort() function (which >>>>fortunately points in its docs to order)---but novices would find >>>>the sort syntax easier. >>>> >>>>regards, >>>> >>>>/iaw >>>> >>>>______________________________________________ >>>>[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 >>> >>> >>>Petr Pikal >>>[EMAIL PROTECTED] >>> >>>______________________________________________ >>>[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 >> >>______________________________________________ >>[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 > > > Petr Pikal > [EMAIL PROTECTED] ______________________________________________ [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
