I think the OP was asking about the agglomeration method in hclust(), not the distance measure in dist(). And the default in dist() is not absolute distance which is not an option, but Euclidean distance:
> dist(cbind(v, v)) 1 2 3 4 5 2 1.414214 3 2.828427 1.414214 4 4.242641 2.828427 1.414214 5 5.656854 4.242641 2.828427 1.414214 6 7.071068 5.656854 4.242641 2.828427 1.414214 For a single vector (column) such as v <- 1:6, Euclidean, Manhattan, Maximum, and Minkowski will all give the same result. ------------------------------------- David L Carlson Department of Anthropology Texas A&M University College Station, TX 77840-4352 -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of eliza botto Sent: Thursday, December 12, 2013 5:15 PM To: capricy gao; r-help@r-project.org Subject: Re: [R] method default for hclust function Absolute distance is the default distance in hclust. v<-c(1,2,3,4,5,6) dist(v) 2 1 3 2 1 4 3 2 1 5 4 3 2 1 6 5 4 3 2 1 Eliza > Date: Thu, 12 Dec 2013 15:09:19 -0800 > From: capri...@yahoo.com > To: r-help@r-project.org > Subject: [R] method default for hclust function > > I could not figure out what was the default when I ran hclust() without specifying the method. > > For example: > > I just have a code like: > > hclust(dist(data)) > > Any input would be appreciated:) > [[alternative HTML version deleted]] > > ______________________________________________ > 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. [[alternative HTML version deleted]] ______________________________________________ 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.