VERIFIED SOLUTION i

Resolve problems with projection bounds for EPSG 25832 and 25833 in middle Europe when using MapInfo

Product Feature: Projections
 

Issue

In middle Europe a lot customers use EPSG 25832 and 25833 with country bounds and it regularly causes issues translating tables from and to other formats.  

Usual issues are:
  • Data will not be displayed at all
  • Data cannot be imported/exported as the right EPSG is not available
  • Import table projection is not recognized automatically  

Cause

The MapInfo projection file does comes with EPSG 25832 and 25833 as bounded and unbounded Danish projections.

"--- Danish Coordinate Systems ---"
"UTM Zone 32 Euref89\p25832", 8, 115, 7, 9.0, 0, 0.9996, 500000, 0
"UTM Zone 33 Euref89\p25833", 8, 115, 7, 15.0, 0, 0.9996, 500000, 0

"--- Danish Bounded Coordinate Systems---"
"Bounded UTM Zone 32 ETRS89\p25832", 2008, 115, 7, 9.0, 0, 0.9996, 500000, 0, 50000.0, 5750000.0, 1050000.0, 6750000.0
"Bounded UTM Zone 33 ETRS89\p25833", 2008, 115, 7, 15.0, 0, 0.9996, 500000, 0, -200000.0, 5750000.0, 800000.0, 6750000.0

Customers in Germany wonder why mainly EPSG 25832 should be a Danish projection as the meridian also covers huge parts of Germany as well. They also encounter the above mentioned problems converting their files to this EPSG. It is officially used in Germany. 

Resolution

UPDATED: September 7, 2017
German customers using MapInfo Professional need to amend the projection file with both EPSG codes as a custom projection so that they can work with data located in Germany. This is also needed for customers in other countries using these EPSG codes. Example projection strings with German bounds can be found below:

"--- German Custom Projections ---"
"ETRS TM Zone 32, Germany bounded (ETRS89)\p25832", 2008, 115, 7, 9, 0, 0.9996, 500000, 0, 216000, 5149000, 985000, 6189000
"ETRS TM Zone 33, Germany bounded (ETRS89)\p25833", 2008, 115, 7, 15, 0, 0.9996, 500000, 0, -204000, 5158000, 567000, 6210000

It is recommended to insert this on top of the existing projections so it gets used with priority.

Note: By definition EPSG 25832 and 25833 is unbounded or maximum bounded for the whole meridian (25832 = meridian 32, 25833 = 33). This means that the use of these EPSG codes with country bounds is not correct. But customers use it this way, mainly as it is used this way in other GIS applications. The accuracy with meridian bounds should be enough so everyone can use it in middle Europe.