Is there a way to create a custom geographic transformation with specifics parameters in QGIS like in ArcGIS?
Okay, I want to tranform SAD69 system into WGS84. Well, I'm in doubt because in ArcGIS you have to enter both systems and then specify the method of the transformation - wich is the Molodensky method - and its three parameters - defined by the brazilian government.
a1 = 6.378.160 m
f1 = 1/298,25
a2 = 6.378.137 m
f2 = 1/298,257222101 ΔX = − 67,35 m
ΔY = + 3,88 m
ΔZ = − 38,22 m
Thanks in advance,
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