Schema Central > NIEM 2.1 > coordinateSystems.xsd > gml:axis
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The gml:axis property is an association role (ordered sequence) to the coordinate system axes included in this coordinate system. The coordinate values in a coordinate tuple shall be recorded in the order in which the coordinate system axes associations are recorded, whenever those coordinates use a coordinate reference system that uses this coordinate system. The gml:AggregationAttributeGroup should be used to specify that the axis objects are ordered.

Element information



xlink:type [0..1]xsd:stringFixed value is "simple". from group xlink:simpleLink
xlink:href [0..1]xsd:anyURIfrom group xlink:simpleLink
xlink:role [0..1]xsd:anyURIfrom group xlink:simpleLink
xlink:arcrole [0..1]xsd:anyURIfrom group xlink:simpleLink
xlink:title [0..1]xsd:stringfrom group xlink:simpleLink
xlink:show [0..1]Anonymousfrom group xlink:simpleLink
xlink:actuate [0..1]Anonymousfrom group xlink:simpleLink
nilReason [0..1]gml:NilReasonTypefrom group gml:AssociationAttributeGroup
gml:remoteSchema [0..1]xsd:anyURIfrom group gml:AssociationAttributeGroup

Used in

Substitution hierarchy

Sample instance

   <gml:CoordinateSystemAxis gml:id="ID" uom="">
         <gml:GenericMetaData>Any text, intermingled with:...
      <gml:identifier codeSpace="">string</gml:identifier>
      <gml:axisDirection codeSpace="">string</gml:axisDirection>
      <gml:rangeMeaning codeSpace="">string</gml:rangeMeaning>

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