Re: [R] algorithm to create unique identifiers

2008-09-05 Thread Prof Brian Ripley
For a much simpler solution that does always work for numbers, see unique's methods for matrices and data frames. On Thu, 4 Sep 2008, Henrik Bengtsson wrote: On Thu, Sep 4, 2008 at 8:44 PM, Ralph S. <[EMAIL PROTECTED]> wrote: Hi all, I am trying to create a unique identifier for each row, c

Re: [R] algorithm to create unique identifiers

2008-09-04 Thread Christos Hatzis
It might be an overkill for what you need, but take a look at package Ruuid. -Christos > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ralph S. > Sent: Thursday, September 04, 2008 11:44 PM > To: r-help@r-project.org > Subject: [R] algorithm to cr

Re: [R] algorithm to create unique identifiers

2008-09-04 Thread Henrik Bengtsson
On Thu, Sep 4, 2008 at 8:44 PM, Ralph S. <[EMAIL PROTECTED]> wrote: > > Hi all, > > I am trying to create a unique identifier for each row, combining numbers > from three columns. > > Do you know if there is a general formula to do this (or some manual where I > can read about this)? > > I figure