And you can compare the results with those of the
'regularCoordinates' function in geosphere. Robert
On Sat, Aug 31, 2013 at 1:05 PM, Edzer Pebesma
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> John, as an alternative you may want to look into sp::spsample, using
> type "Fibonacci
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
John, as an alternative you may want to look into sp::spsample, using
type "Fibonacci"; the paper describing this is
Alvaro Gonzalez, 2010. Measurement of Areas on a Sphere Using
Fibonacci and Latitude-Longitude Lattices. Mathematical Geosciences
42(1
There are many pathways to this, but you could use a map projection
that provides the properties you want and sample points there, then
project that back to longitude latitude.
Here's a dummy example, I just found an equal area projection by
stumbling through spatialreference.org, you should look
Ok, I'll be more explicit :)
If I want to generate random coordinates across North America by uniformly
sampling latitudes and longitudes, the geographical distance between these
coordinates would decrease towards higher latitudes. I'd like to be able to
generate coordinates (e.g. a grid) such tha
You will find that any two coordinates are equidistant from each other...
So my suggestion is you need to expand you question a bit more! :)
On Wed, Aug 28, 2013 at 3:49 PM, john d wrote:
> Dear all,
>
> I need to generate coordinates that are equidistant, regardless of
> latitude. Any suggesti
Dear all,
I need to generate coordinates that are equidistant, regardless of
latitude. Any suggestions?
Thanks!
John
[[alternative HTML version deleted]]
___
R-sig-Geo mailing list
R-sig-Geo@r-project.org
https://stat.ethz.ch/mailman/listinfo