Different bounds for EPSG 25832 why?

[Peter Hollebeek]

These 2 projections from mapinfow.prj are using the same ETRS89/p25832 But the first one is using no bound and the latter is using a bound.

Looking at google I can find another bound  http://spatialreference.org/ref/epsg/25832/

 

Since it will have a small influence converting data is the no international standard for bounds?

 

 

"UTM Zone 32 Euref89\p25832", 8, 115, 7, 9.0, 0, 0.9996, 500000, 0
"Afgrænset UTM zone 32 ETRS89\p25832", 2008, 115, 7, 9.0, 0, 0.9996, 500000, 0, 50000.0, 5750000.0, 1050000.0, 6750000.0

 

From google

 

EPSG:25832

ETRS89 / UTM zone 32N (Google it)

• WGS84 Bounds: 5.0500, 57.9000, 12.0000, 65.6700

[Peter Horsbøll Møller]

Peter

The bounds that you have found have been specified by the Danish Geodata Agency.

Not sure who has specified the other bounds.

For MapInfo you need to specify the bounds using the coordinates of the coordinate system.

So it will not be possible to set the bounds using these WGS84 coordinates

Peter Horsbøll Møller

Pitney Bowes Software

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Date: Wed, 11 Dec 2013 06:32:40 -0800
From: p...@viborg.dk
To: mapi...@googlegroups.com
Subject: [MI-L] Different bounds for EPSG 25832 why?

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[Lars I. Nielsen (GisPro)]

Peter,

The bounds in a coordsys clause is not related to the coordsys as such, it's related to the precision of the stored data.

You can utilize a narrow bounds inside any projection to enable super precise coordinates.

The trade-off is that storing data outside the bounds is not possible, as Peter Møller explains.

Coordinates are stored (in the MAP file) as 32 bit integers within the bounds. So the narrower the bounds, the higher the precision.

The default bounds are usually very wide.

Best regards / Med venlig hilsen
Lars I. Nielsen
GIS & DB Integrator
GisPro