a <- a[order(a[[4]]),] On Fri, Oct 28, 2011 at 10:01 AM, nandan amar <[email protected]> wrote: > I want to sort my following data set according to value in 4th column > > 0 1 0 27877.3044386212 15.8733019973557 2640.42407064348 > 0 1 1 27470.1699006254 35.4182473588807 2303.26461260826 > 0 1 2 27468.0314985496 38.4400363878507 2300.05521684593 > 0 1 3 27469.1130543141 40.7540672493746 2299.32564458085 > 0 1 4 27442.3152643187 52.4342875797706 2277.18286686329 > 0 1 5 27440.7923082136 54.8003481512783 2274.49112409585 > ..... > > I tried following : > first i wanted just to sort 4th column >>a<-read.tables("file_namr") >>attributes(a) > > gives class as > $class > [1] "data.frame" > > and > >> sort(a[4]) > Error in `[.data.frame`(x, order(x, na.last = na.last, decreasing = > decreasing)) : > undefined columns selected > > How can I sort the data according to value in 4th column and print along > with other columns > -- > > Amar Kumar Nandan > Karnataka, India, 560100 > ☎:+91-9019054471 > ✉:[email protected] > http://aknandan.co.nr > > [[alternative HTML version deleted]] > > > ______________________________________________ > [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 > and provide commented, minimal, self-contained, reproducible code. > >
-- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ [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 and provide commented, minimal, self-contained, reproducible code.
