Aron, Thanks for the info...
David David M. Baker Senior Geologist - Chief Technology Advisor Chesapeake Energy Corporation 405-935-3715 office 405-496-5373 cell david.m.ba...@chk.com -----Original Message----- From: Aron Rubin [mailto:aronru...@gmail.com] Sent: Tuesday, March 16, 2010 4:14 PM To: David Baker (Geoscience) Cc: gdal-dev@lists.osgeo.org Subject: Re: [gdal-dev] Geodetic Problem On 3/16/10, David Baker (Geoscience) <david.m.ba...@chk.com> wrote: > Frank and the List, > > I have a geodetic problem I hope GDAL/OGR can solve. > I have not seen the direct or inverse gedesic routines in either Proj or OGR. SimGear provides an implementation here <http://cvs.simgear.org/viewvc/source/simgear/math/SGGeodesy.cxx?root=SimGear&view=markup> (function _geo_direct_wgs_84) and you could use OSRGetSemiMajor OSRGetInvFlattening OSRGetSemiMinor for the "a", "rf", and "b" variables respectively to use other ellipsoids assigned in OGR. Proj wiki has notes here <http://trac.osgeo.org/proj/wiki/GeodesicCalculations> which notes a fortran implementation <http://www.ngs.noaa.gov/PC_PROD/Inv_Fwd/>. Aron -- Aron Rubin Handy Husband & Daddy Jungle Gym & Senior Engineer This email (and attachments if any) is intended only for the use of the individual or entity to which it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the reader of this email is not the intended recipient, or the employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by return email and destroy all copies of the email (and attachments if any). _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
