-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dylan Beaudette wrote: > On Sun, Jun 14, 2009 at 4:39 PM, Nathan S. > Watson-Haigh<nathan.watson-ha...@csiro.au> wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Is there a library which is capable of identifying distinct clusters of size >> n >> from a series of XY coordinates? >> >> Failing this, I'd like to be able to to something like: >> Using a sliding window of size n along the x-axis I'd like to determine the >> distance between the center of the points in the window and the closest point >> outside the window. I could then use a distance cutoff to help define my >> clusters of size n. However, how can I calculate this distance? >> >> Cheers, >> Nathan >> > > Here is a start, using PAM clustering: > > http://casoilresource.lawr.ucdavis.edu/drupal/node/340 > > cheers, > Dylan
Thanks, that looks interesting. However I need a clustering algorithm which has the following properties: 1) The ability to define clusters of size n 2) No need to specify a priory how many clusters there will be 3) The ability to omit data from any cluster. I don't think this package can do this. I suspect for something like this I'll have to define, a priory, how tight points within a cluster should be using some measure. Any thoughts? Nathan - -- - -------------------------------------------------------- Dr. Nathan S. Watson-Haigh OCE Post Doctoral Fellow CSIRO Livestock Industries Queensland Bioscience Precinct St Lucia, QLD 4067 Australia Tel: +61 (0)7 3214 2922 Fax: +61 (0)7 3214 2900 Web: http://www.csiro.au/people/Nathan.Watson-Haigh.html - -------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAko1sWMACgkQ9gTv6QYzVL7grwCZAQh72v33vPNJJgEFJEhfyNc3 718AnA3k7wvvLEZ4NS1enW3Xp5WhO+qJ =1gyG -----END PGP SIGNATURE----- ______________________________________________ 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.
