IS:point: Difference between revisions
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|semantics=Specification of the polygon by its bounding nodes; first and last point are connected to close the polygon. | |semantics=Specification of the polygon by its bounding nodes; first and last point are connected to close the polygon. | ||
|inheritedAttributes=''None'' | |inheritedAttributes=''None'' | ||
|ownAttributes= | |ownAttributes= | ||
*{{attr|coord}}: | *{{attr|coord}}: This is a list of values representing the coordinates. | ||
*{{attr|extraHeight}}: | *{{attr|extraHeight}}: This is a separate value for the altitude/height. It is used: 1) if altitudes are stored in an own reference system (i. e. epsgCode refers to a GeodeticCRS rather than a CompoundCRS); 2) if there are no long/lat coords given or known but a height. See <[https://wiki2.railml.org/wiki/IS:geoCoord geoCoord]> notes. | ||
*{{attr|epsgCode}}: | *{{attr|epsgCode}}: This is an URI pointing to the {{external|https://en.wikipedia.org/wiki/EPSG|EPSG-Code}} as reference system for the coordinates in coord. | ||
*{{attr|heightEpsgCode}}: | *{{attr|heightEpsgCode}}: This is an URI pointing to the {{external|https://en.wikipedia.org/wiki/EPSG|EPSG-Code}} for the separate altitude reference system. | ||
|constraints= | |constraints= | ||
*{{attr|coord}}: {{railMLType|tCoordinateList}} Required | *{{attr|coord}}: {{railMLType|tCoordinateList}} Required | ||
Latest revision as of 10:32, 24 October 2022
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Scheme description / Schemenbeschreibung
Position of point in the XML-Tree / Position von point im XML-Baum
- Parent: <polygon>
- Children: None
Multiplicity / Anzahl
Semantics / Bedeutung
Specification of the polygon by its bounding nodes; first and last point are connected to close the polygon.(introduced with version 2.5)
Attributes of point / Attribute von point
- coord: This is a list of values representing the coordinates.
- extraHeight: This is a separate value for the altitude/height. It is used: 1) if altitudes are stored in an own reference system (i. e. epsgCode refers to a GeodeticCRS rather than a CompoundCRS); 2) if there are no long/lat coords given or known but a height. See <geoCoord> notes.
- epsgCode: This is an URI pointing to the EPSG-Code (external link) as reference system for the coordinates in coord.
- heightEpsgCode: This is an URI pointing to the EPSG-Code (external link) for the separate altitude reference system.
Syntactic Constraints / Syntaktische Beschränkungen
- coord: Restriction of tDoubleList, a coordinate list consisting of two or three coordinates. Required
- extraHeight: xs:double, optional
- epsgCode: xs:anyURI, optional
- heightEpsgCode: xs:anyURI, optional
Best practice & Examples / Empfohlene Anwendung & Beispiele
Not yet described. / Noch nicht beschrieben.
Notes / Anmerkungen
Not yet described. / Noch nicht beschrieben.
Open issues / Offene Punkte/Pendenzen
Not yet described. / Noch nicht beschrieben.