Hi John, This may be a better question for the R-SIG-Geo list. I'm pretty sure the answer will depend on the extent of your study area and identifying a projection system which can place spatial points as a grid over the study area. As I don't know your study area or extent it's hard to be more specific than that, but a quick google search turned up a similar question on stack overflow http://stackoverflow.com/questions/11853796/convert-longitude-latitude-coordinates-wgs-to-grid-with-equidistant-axes-in-g and a possibly function http://rss.acs.unt.edu/Rdoc/library/spsurvey/html/marinus.html. A good resource if you are not familiar is the R spatial task view http://cran.r-project.org/web/views/Spatial.html.
Hope that helps, Alex On Wed, Aug 28, 2013 at 4:00 AM, <r-sig-ecology-requ...@r-project.org>wrote: > Send R-sig-ecology mailing list submissions to > r-sig-ecology@r-project.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://stat.ethz.ch/mailman/listinfo/r-sig-ecology > or, via email, send a message with subject or body 'help' to > r-sig-ecology-requ...@r-project.org > > You can reach the person managing the list at > r-sig-ecology-ow...@r-project.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of R-sig-ecology digest..." > > > Today's Topics: > > 1. generating coordinates at equal geographical distances (john d) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 27 Aug 2013 10:48:31 -0300 > From: john d <dobzhan...@gmail.com> > To: r-sig-ecology@r-project.org > Subject: [R-sig-eco] generating coordinates at equal geographical > distances > Message-ID: > <CAMLNaBbRXiV+ZozH03zbA= > ca5rghnmmmvptzpdhtqg+h5ra...@mail.gmail.com> > Content-Type: text/plain > > Dear all, > > I need to generate coordinates that are equidistant, regardless of > latitude. Any suggestions? > > Thanks! > > John > > [[alternative HTML version deleted]] > > > > ------------------------------ > > _______________________________________________ > R-sig-ecology mailing list > R-sig-ecology@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-ecology > > > End of R-sig-ecology Digest, Vol 65, Issue 20 > ********************************************* > -- Alex Thomas Temporary Employee Knight Lab University of Colorado, Boulder Affiliate Researcher Department of Ecology, Earth Sciences Division Lawrence Berkeley National Laboratory Independent Contractor U.S. Geological Survey Forest and Rangeland Ecosystem Science Center Cascadia Field Station [[alternative HTML version deleted]] _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
