[Proj] +towgs84 approximation error

Jochem jochem.lesparre at kadaster.nl
Thu Mar 23 02:30:15 PDT 2017


Hi Nicholas,

The problem is not direction dependant. I have a different set of parameters
for the inverse transformation. The coordinate systems I am using do not
have epsg codes yet. I can demonstrate the problem by comparing cs2cs with a
computation in Excel twice. One time with the approximate formulas, giving
the same result as cs2cs, and one time with the strict formulas, giving a 4
cm different result. Do you think that is a good idea? 

Regards, Jochem




--
View this message in context: http://osgeo-org.1560.x6.nabble.com/towgs84-approximation-error-tp5313738p5313824.html
Sent from the PROJ.4 mailing list archive at Nabble.com.



More information about the Proj mailing list