Sam, maybe you'll like to read about some environmetrics packages at http://cran.r-project.org/src/contrib/Views/Environmetrics.html or about more specific spatial analysis packages at http://cran.r-project.org/src/contrib/Views/Spatial.html
Have a good reading and... good luck! Rogerio. ----- Original Message ----- From: "McClatchie, Sam (PIRSA-SARDI)" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, May 19, 2006 12:16 AM Subject: [R] Cross correlation/ bivariate/ mantel > Background: > OS: Linux Ubuntu Dapper > release: R 2.3.0 > editor: GNU Emacs 21.4.1 > front-end: ESS 5.2.3 > ----------------------------- > Colleagues > I have two spatial datasets (latitude, longitude, fish eggs) and (latitude, longitude, fish larvae) at the same 280 stations (i.e. 280 cases). I want to determine if the 2 datasets are spatially correlated. In other words, do high numbers of larvae occur where there are high numbers of eggs? I would like to calculate the cross correlation for these bivariate data and calculate a Mantel statistic as described on pg. 147 of Fortin and Dale 2005 "Spatial analysis". My search of R packages came up with acf and ccf functions but I don't think these are what I want. Does anyone know which spatial package I might find the appropriate test, please? > Best fishes > > Sam > ---- > Sam McClatchie, > Biological oceanography > South Australian Aquatic Sciences Centre > PO Box 120, Henley Beach 5022 > Adelaide, South Australia > email <[EMAIL PROTECTED]> > Cellular: 0431 304 497 > Telephone: (61-8) 8207 5448 > FAX: (61-8) 8207 5481 > Research home page <http://www.members.iinet.net.au/~s.mcclatchie/> > > /\ > ...>><xX(°> > //// \\\\ > <°)Xx><< > ///// \\\\\\ > ><(((°> > >><(((°> ...>><xX(°>O<°)Xx><< > [[alternative HTML version deleted]] -------------------------------------------------------------------------------- > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
