Don't need to upgrade R just to get index() working. You can try the following modification.
v <- sample(1:3, 30, replace = TRUE) split( 1:length(v), v ) Should do the trick. Check out the reverse function unsplit(). Regards, Adai Leeds, Mark (IED) wrote: > index is definitely defined in my version ( 2.4.0) because when I do > ?index, I get info. Maybe you > Are using an older or younger version of R ? I'm really not sure why you > are experiencing that problem. > > > -----Original Message----- > From: Patrick Wang [mailto:[EMAIL PROTECTED] > Sent: Thursday, May 17, 2007 8:44 PM > To: Leeds, Mark (IED) > Cc: Patrick Wang; r-help@stat.math.ethz.ch > Subject: RE: [R] Split a vector(list) into 3 list > > Thanks, > > no index function was defined in R. > > I try to use the split(order(temp), temp), the number of groups are > correct, however the result doesnot seem to be correct. I try to match > before the ordered index and the original index. > > Pat > >> If temp is your vector then split(index(temp),temp) will give you >> what you want. >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Patrick Wang >> Sent: Thursday, May 17, 2007 8:15 PM >> To: r-help@stat.math.ethz.ch >> Subject: [R] Split a vector(list) into 3 list >> >> Hi, >> >> I have a vector contains values 1,2,3. >> >> Can I call a function split to split it into 3 vectors with 1 >> corresponds to value ==1, which contain all the indexes for value==1. >> >> 2 corresponds to value ==2 which contain all the indexes for value=2 >> >> Thanks >> pat >> >> ______________________________________________ >> 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 >> and provide commented, minimal, self-contained, reproducible code. >> -------------------------------------------------------- >> >> This is not an offer (or solicitation of an offer) to buy/sell the >> securities/instruments mentioned or an official confirmation. Morgan >> Stanley may deal as principal in or own or act as market maker for >> securities/instruments mentioned or may advise the issuers. This is >> not research and is not from MS Research but it may refer to a >> research analyst/research report. Unless indicated, these views are >> the author's and may differ from those of Morgan Stanley research or >> others in the Firm. We do not represent this is accurate or complete >> and we may not update this. Past performance is not indicative of >> future returns. For additional information, research reports and >> important disclosures, contact me or see >> https://secure.ms.com/servlet/cls. You should not use e-mail to >> request, authorize or effect the purchase or sale of any security or >> instrument, to send transfer instructions, or to effect any other >> transactions. We cannot guarantee that any such requests received via > >> e-mail will be processed in a timely manner. This communication is >> solely for the addressee(s) and may contain confidential information. > >> We do not waive confidentiality by mistransmission. Contact me if you > >> do not wish to receive these communications. In the UK, this >> communication is directed in the UK to those persons who are market >> counterparties or intermediate customers (as defined in the UK > Financial Services Authority's rules). > -------------------------------------------------------- > > This is not an offer (or solicitation of an offer) to buy/se...{{dropped}} > > ______________________________________________ > 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 > and provide commented, minimal, self-contained, reproducible code. > > > ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.