I meant type in "?sample" to see what the 'sample' function does. For example, to select 50 random rows,
> sample(2000,50) [1] 1004 857 1219 1850 480 543 1466 1498 1854 922 1713 621 414 1830 105 817 906 825 1329 1500 1806 1623 186 352 1270 1727 1170 518 1743 370 964 20 710 870 248 1227 594 471 704 1751 [41] 1942 1435 1944 1057 849 1886 290 130 48 1195 > On Fri, Mar 27, 2009 at 3:18 PM, Laura Rodriguez Murillo <laura.lmuri...@gmail.com> wrote: > Sorry, I'm attaching part of the file I have. They go up to 2000 and I > would like to take a subset of around 300. > > > 5001 1 > 5001 2 > 5001 3 > 5001 5 > 5001 6 > 5002 1 > 5002 2 > 5002 5 > 5002 6 > 5002 11 > 5002 15 > 5002 16 > 5003 1 > 5003 2 > 5003 5 > 5003 6 > 5004 1 > 5004 2 > 5004 5 > 5004 6 > 5004 10 > 5004 11 > 5004 12 > 5004 15 > 5004 16 > 5004 25 > 5004 26 > 5004 35 > 5004 36 > 5004 45 > 5004 46 > 5004 55 > > > Thank you! > > Laura > > 2009/3/27 jim holtman <jholt...@gmail.com>: >> ?sample >> >> On Fri, Mar 27, 2009 at 3:11 PM, Laura Rodriguez Murillo >> <laura.lmuri...@gmail.com> wrote: >>> Hi dear list, >>> >>> I have a list of around 2000 identifiers aranged in a dataframe in one >>> column and I would like to choose a random subset of these. I wonder >>> if somebody can tell me if I could do this with R... >>> >>> Thank you so much! >>> >>> Laura RM >>> >>> ______________________________________________ >>> R-help@r-project.org 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 >> Cincinnati, OH >> +1 513 646 9390 >> >> What is the problem that you are trying to solve? >> > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ R-help@r-project.org 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.
