Documentation for National Information Exchange Model (NEIM)
Definition Type: Element
Name: _CoordinateReferenceSystem
Namespace: http://niem.gov/niem/external/ogc-gml/3.1.1/dhs-gmo/1.0.0
Type: gml:AbstractReferenceSystemType
Containing Schema: gml.xsd
Abstract True
Documentation:
A coordinate reference system consists of an ordered sequence of coordinate system axes that are related to the earth through a datum. A coordinate reference system is defined by one datum and by one coordinate system. Most coordinate reference system do not move relative to the earth, except for engineering coordinate reference systems defined on moving platforms such as cars, ships, aircraft, and spacecraft. For further information, see OGC Abstract Specification Topic 2. Coordinate reference systems are commonly divided into sub-types. The common classification criterion for sub-typing of coordinate reference systems is the way in which they deal with earth curvature. This has a direct effect on the portion of the earth's surface that can be covered by that type of CRS with an acceptable degree of error. The exception to the rule is the subtype "Temporal" which has been added by analogy.
Collapse XSD Schema Diagram:
Drilldown into scope in schema gml_xsd Drilldown into validArea in schema gml_xsd Drilldown into remarks in schema gml_xsd Drilldown into srsID in schema gml_xsd Drilldown into srsName in schema gml_xsd Drilldown into name in schema gml_xsd Drilldown into description in schema gml_xsd Drilldown into metaDataProperty in schema gml_xsd Drilldown into id in schema gml_xsd Drilldown into AbstractReferenceSystemBaseType in schema gml_xsd Drilldown into AbstractReferenceSystemType in schema gml_xsdXSD Diagram of _CoordinateReferenceSystem in schema gml_xsd (National Information Exchange Model (NEIM))
Collapse XSD Schema Code: 
<element name="_CoordinateReferenceSystem" type="gml:AbstractReferenceSystemType" abstract="true" substitutionGroup="gml:_CRS">
    <annotation>
        <documentation>A coordinate reference system consists of an ordered sequence of coordinate system axes that are related to the earth through a datum. A coordinate reference system is defined by one datum and by one coordinate system. Most coordinate reference system do not move relative to the earth, except for engineering coordinate reference systems defined on moving platforms such as cars, ships, aircraft, and spacecraft. For further information, see OGC Abstract Specification Topic 2.

Coordinate reference systems are commonly divided into sub-types. The common classification criterion for sub-typing of coordinate reference systems is the way in which they deal with earth curvature. This has a direct effect on the portion of the earth's surface that can be covered by that type of CRS with an acceptable degree of error. The exception to the rule is the subtype "Temporal" which has been added by analogy. </documentation>
    </annotation>
</element>
Collapse Child Elements:
Name Type Min Occurs Max Occurs
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
name gml:name 0 unbounded
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
name gml:name (1) unbounded
metaDataProperty gml:metaDataProperty 0 unbounded
srsName gml:srsName (1) (1)
srsID gml:srsID 0 unbounded
remarks gml:remarks 0 (1)
validArea gml:validArea 0 (1)
scope gml:scope 0 (1)
<xs:group> gml:StandardObjectProperties (1) (1)
Collapse Child Attributes:
Name Type Default Value Use
id gml:id Required
Collapse Derivation Tree:
Collapse References:
gml:_CRS
Documentation for National Information Exchange Model (NEIM)

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