[Proj] proj and Dutch RD
paul-grass at stjohnspoint.co.uk
Wed Jan 11 17:49:43 EST 2006
Martin Vermeer wrote:
> On Wed, Jan 11, 2006 at 10:09:39AM -0800, Eric Miller wrote:
>>Here's a source listing 3-parameter values for transforming between WGS84 and RD: http://kartoweb.itc.nl/geometrics/Reference%20surfaces/DATUM.txt
>>Rijks Driehoeksmeting=Bessel 1841,-593,-26,-478,Netherlands
>>I've no idea if the signs needs to be changed or what the source is... Caveat lector!
>>Theoretically you can use the +towgs84 argument to apply the datum transformation.
> Yes of course... you need the correct translation vector. The Bessel
> ellipsoid is non-geocentric!
> Forget my suggestion of using bessel as the 'from' ellipsoid. It should
> be wgs84 with proper shift added.
towgs84=565.036,49.914,465.839,-0.4094,0.3597,-1.86854,-4.0772 for the
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