| Coordinate system used for "geoCoord"-element [message #168] |
Thu, 20 October 2005 16:21  |
Volker Knollmann
Messages: 32
Registered: October 2003
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Member |
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Hi there,
we were just planning a railML-application which would make use of the
geoCoord-elemets (longitude, latitude, altitude).
My question: has there been any kind of agreement, which coordinate
system (e. g. WGS84, UTM, Gauss-Krueger, ...) is to be used?
I guess this is another case, in which the SYNTAX is clear, but the
SEMANTICS are not...
Best regards,
Volker Knollmann
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German Aerospace Center (DLR)
Institute of Transportation Systems
Lilienthalplatz 7
38108 Braunschweig, Germany
Dipl.-Ing. Volker Knollmann
Telephone: +49 531 295-3461
Telefax : +49 531 295-3402
Internet: http://www.dlr.de/fs
Please use encryption and electronic signatures for secure data
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| Re: Coordinate system used for "geoCoord"-element [message #171 is a reply to message #168] |
Mon, 31 October 2005 11:37  |
Matthias Hengartner
Messages: 57
Registered: August 2003
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Member |
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Hello,
> we were just planning a railML-application which would make use of the
> geoCoord-elemets (longitude, latitude, altitude).
Nice to hear that a further railML-application is being planned!
> My question: has there been any kind of agreement, which coordinate
> system (e. g. WGS84, UTM, Gauss-Krueger, ...) is to be used?
Not that I know of, but I wasn't involved in the development of railML when
<geoCoords> was introduced...
Which systems are used in reality? I guess there are differences between
different Countries or even railway companies...
Would it make sense to introduce an attribute like "coordSystem" to allow
different systems?
If yes: Should we consider local coordinate systems (like CH1903 [Schweizer
Landeskoordinaten] in Switzerland)?
.... sorry that there are more questions than answers in this posting B-)
Best regards,
Matthias Hengartner
--
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Matthias Hengartner
IVT ETH Zürich
hengartner(at)ivtbaugethzch
++ 41 44 633 68 16
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