I think all you need is
bearing <- function(x, y) atan2(y, x)*180/pi
This gives the bearing in degrees from the origin. If you wanted the bearing
from some other point, just take the differences:
bearing <- function(x, y, origin = c(x=0,y=0))
atan2(y-origin["y"], x-origin["x"])*180/pi
Bill Venables
http://www.cmis.csiro.au/bill.venables/
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of pecardoso
Sent: Tuesday, 28 July 2009 9:40 AM
To: r-help@r-project.org
Subject: [R] Get bearing for cartesian coordinates
Is it possible to get bearing in degrees from Cartesian (not lat long)
coordinates?
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