Re: [R] Split a vector(list) into 3 list

From: Patrick Wang <pwang_at_berkeley.edu>
Date: Thu, 17 May 2007 17:44:09 -0700 (PDT)

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: r-help-bounces_at_stat.math.ethz.ch
> [mailto:r-help-bounces_at_stat.math.ethz.ch] On Behalf Of Patrick Wang
> Sent: Thursday, May 17, 2007 8:15 PM
> To: r-help_at_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_at_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).
>



R-help_at_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. Received on Fri 18 May 2007 - 00:50:38 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Fri 18 May 2007 - 01:31:17 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.