I'm trying to transform some geodetic coordinates from the Ellipsoid (Hayford) to WGS84. I downloaded QGIS and I'm trying to use PROJ, with the OSGeo4W shell. I'm trying first to run the example given in the documentation. Example
proj +proj=molodensky +a=6378160 +rf=298.25 +da=-23 +df=-8.120449e-8 +dx=-134 +dy=-48 +dz=149 +abridged but I get the follow error get the error:
<proj>: can't initialize operations that produce angular output coordinates program abnormally terminated
Also, why are the parameters
+a(semi-major axis) and
+rf needed and what does
+rf stands for?