[STATSGRASS] Proj4

Torben Bach torben.bach at geo.au.dk
Thu Oct 23 06:23:04 EDT 2003


Hi

Completely new to the subject I have been roaming the internet trying to
find a "golden" command line to proj4 for converting lat-lon coordinates
to DANISH ED50 UTM zone 32N. Apparently the internal ED50 is not the
same as the Danish (or german or french...) ED50 - im am confused - does
anybody know the "golden" command line I so badly long for ? 

Another question - how accurate is the ouput from Proj4 ? I have
compared results converting to EUREF89 with output from programs from
the national Ministry of the Environment (KMS) handling this stuf and
MapInfo, and they gave the same result within a meter or so. But using
ED50 and Proj4 gave coordinates lying hundreds of meters from MapInfo
and "official" KMS  results (this was how I discoverd I needed the
"golden" command line).

Thanks in advance !!

Best regards,

-Torben Bach





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