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-request@r-project.org>wrote:

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> Date: Tue, 27 Aug 2013 10:48:31 -0300
> From: john d <dobzhanski@gmail.com>
> To: r-sig-ecology@r-project.org
> Subject: [R-sig-eco] generating coordinates at equal geographical
>         distances
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> Dear all,
>
> I need to generate coordinates that are equidistant, regardless of
> latitude. Any suggestions?
>
> Thanks!
>
> John
>
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-- 
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

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