Re: [R] Select 5 identical numbers

2014-01-20 Thread Daniel Nordlund
read up on ?sample Dan Daniel Nordlund Bothell, WA USA > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Alaios > Sent: Monday, January 20, 2014 10:12 PM > To: Alaios; R-help@r-project.org > Subject

Re: [R] Select 5 identical numbers

2014-01-20 Thread Alaios
Hi, I want from a vector containing has like 1000 elements to select X of it randomly but with never selecting the same element again. Each one should be unique element of the vector. Is this more precise now? Regards Alex On Monday, January 20, 2014 7:54 PM, Alaios wrote: Dear all, I wou

Re: [R] Select 5 identical numbers

2014-01-20 Thread Bert Gunter
But just noting the usual floating point stuff, Jim's approach might run into problems depending on what you have as "numbers" and what is meant by "identical." Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And

Re: [R] Select 5 identical numbers

2014-01-20 Thread jim holtman
Use 'table' to count the occurances and then select the one that has a count of 5. Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. On Mon, Jan 20, 2014 at 12:07 PM, Alaios wrote: > Dear all, > I would like t

[R] Select 5 identical numbers

2014-01-20 Thread Alaios
Dear all, I would like to select from a vector of 10 elements, 5 of those that are identical. How can I do that in R? I guess one way would be to taking random numbers and see if that appeared again. Is though there a more straightforward approach? Regards Alex [[alternative HTML version