I get data sent to me in various flavours of EPSG:25832. Unfortunately, everyone thinks that their own EPSG:25832 is the correct one. Some send data with the 32 at the front, others with just a 2, and most with the 32 left off and only the False easting of 500,000m
So, which is the correct EPSG:25832? 6 digit, 7 digit or 8 digit? ArcGIS recognises all, but have also various names for them too. E.g in Projection / National Grids / Germany I see 4 different "ETRS 1989 UTM Zone 32N.prj" Files for 6 digits, 7 digits, and 8 digits and one without a suffix which is also just the 6 Digit CRS. Also to make things worse there is also ETRS 1989 UTM Zone N32" (((!!! N32 instead of 32N !!!)))with the 32 at the front again!
In Projected / UTM / Europe/ there is also "ETRS 1989 UTM Zone 32N.prj" which doesn´t begin with 32.
Can anyone standardize this for me? Has sometime tampered with my CRS Directory in order to confuse me?
Best Answer
This is standardized ;-)
See this explanation in German: http://www.lgn.niedersachsen.de/download/71484/Massgeschneiderte_EPSG-Codes_fuer_GIS-Anwendungen.pdf
The official code for UTM 32N is EPSG:25832
The German Surveying authorities have requested special EPSG codes with the zone numer in front of the Easting coordinate, like EPSG:4647
You see that the false Easting is extended by 32000000 to get the preceeding 32.
If you have data with a preceeding 2, it rather might be old DHDN Gauss-Krueger zone 2 EPSG:31466
with the false Easting extended by 2000000.
My examples are proj.4 definition strings, but Arcgis WKT should look similar, except for the DHDN datum shift.