why is there no spherical solution to the direct geodesy problem? There is!
12-08-2016, 10:25 PM (This post was last modified: 12-08-2016 10:39 PM by Claudio L..)
Post: #5
 Claudio L. Senior Member Posts: 1,836 Joined: Dec 2013
RE: why is there no spherical solution to the direct geodesy problem?
(12-05-2016 08:29 AM)StephenG1CMZ Wrote:  Does this mean that the direct solution was not solvable until Vincenty? As far as on-line references go, there is no mention of how it was solved.

On a sphere this is quite simple to solve, they probably don't mention it because it's trivial. The main reason it's hard to solve with ellipsoid is because the length of a curve doesn't have an analytic solution for that shape, but it does for spheres (EDIT: it should say "it does for circles" which is what you need to solve the distance on a sphere), just using simple trig. functions.
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 Messages In This Thread why is there no spherical solution to the direct geodesy problem? There is! - StephenG1CMZ - 12-05-2016, 08:29 AM RE: why is there no spherical solution to the direct geodesy problem? - Paul Dale - 12-05-2016, 08:38 AM RE: why is there no spherical solution to the direct geodesy problem? - SlideRule - 12-05-2016, 04:03 PM RE: why is there no spherical solution to the direct geodesy problem? - Jake Schwartz - 12-06-2016, 09:10 PM RE: why is there no spherical solution to the direct geodesy problem? - Claudio L. - 12-08-2016 10:25 PM RE: why is there no spherical solution to the direct geodesy problem? - Claudio L. - 12-09-2016, 12:19 AM RE: why is there no spherical solution to the direct geodesy problem? - SlideRule - 12-12-2016, 04:44 PM RE: why is there no spherical solution to the direct geodesy problem? - Luigi Vampa - 12-13-2016, 12:00 AM RE: why is there no spherical solution to the direct geodesy problem? - StephenG1CMZ - 12-14-2016, 09:15 AM RE: why is there no spherical solution to the direct geodesy problem? There is! - ColinJDenman - 12-21-2016, 10:39 AM RE: why is there no spherical solution to the direct geodesy problem? There is! - Luigi Vampa - 12-22-2016, 08:35 PM

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