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 <r-help@stat.math.ethz.ch> > 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 >> >>______________________________________________ >>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 > > > Petr Pikal > [EMAIL PROTECTED] > > ______________________________________________ > 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 ______________________________________________ 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