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? 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
