[Proj] from EPSG:28992 to EPSG:25832

Bart van den Eijnden (OSGIS) bartvde at osgis.nl
Thu Mar 20 11:29:18 EDT 2008

Hi list,

why is the conversion from EPSG:28992 to EPSG:25832 not very accurate?

The official calculator from agrs.nl gives the following:

Original system RD and NAP
X 196197,31
Y 390964,35

Target system UTM(ETRS89)
Zone 32
Northing 5710439,825
Easting 290464,836

This is what I get with PROJ 4.6:

cs2cs -f %.9f +proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889
+k=0.999908 +x_0=155000 +y_0=463000 +ellps=bessel +units=m
+no_defs +to +proj=utm +zone=32 +ellps=GRS80 +units=m +no_defs
196197.31 390964.35
290505.483235725        5710539.888875010 0.000000000

Any ideas what could be causing this? Is there a correction grid involved (I
am no projections expert unfortunately ... ).


Best regards,

Bart van den Eijnden
OSGIS, Open Source GIS

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