Thanks for the Rccp example Ken! I vaguely knew about Rccp, but I didn't realize how easy it was to use it.
-----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Kenneth Knoblauch Sent: Tuesday, October 22, 2013 9:13 AM To: S Ellison Cc: r-help@r-project.org Subject: Re: [R] speeding up "sum of squared differences" calculation Actually, you don't need to use c() in the dist example, either, which should shave off a few microseconds for a function call. It was late last night ... Ken On 22-10-2013 15:08, S Ellison wrote: >> Conclusion: hard to beat outer() for this purpose in R > ... unless you use Ken Knoblauch's suggestion of dist() or Rccp. > > Nice indeed. > > > S Ellison > > > ******************************************************************* > This email and any attachments are confidential. Any use, copying or > disclosure other than by the intended recipient is unauthorised. If > you have received this message in error, please notify the sender > immediately via +44(0)20 8943 7000 or notify postmas...@lgcgroup.com > and delete this message and any copies from your computer and network. > LGC Limited. Registered in England 2991879. > Registered office: Queens Road, Teddington, Middlesex, TW11 0LY, UK -- Kenneth Knoblauch Inserm U846 Stem-cell and Brain Research Institute Department of Integrative Neurosciences 18 avenue du Doyen Lépine 69500 Bron France tel: +33 (0)4 72 91 34 77 fax: +33 (0)4 72 91 34 61 portable: +33 (0)6 84 10 64 10 http://www.sbri.fr/members/kenneth-knoblauch.html ______________________________________________ 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. ______________________________________________ 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.
