<xsd:complexType name="CoordinateSystemAxisType" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:annotation>
<xsd:documentation>Definition of a coordinate system axis. </xsd:documentation>
</xsd:annotation>
<xsd:complexContent>
<xsd:extension base="gml:AbstractCRSObjectType">
<xsd:sequence>
<xsd:element name="axisID" type="gml:IdentifierType" minOccurs="0">
<xsd:annotation>
<xsd:documentation>Identification of this coordinate system axis. </xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="axisAbbrev" type="string">
<xsd:annotation>
<xsd:documentation>The abbreviation used for this coordinate system axis. This abbreviation can be used to identify the ordinates in a coordinate tuple. Examples are X and Y. </xsd:documentation>
</xsd:annotation>
</xsd:element>
<xsd:element name="axisDirection" type="string">
<xsd:annotation>
<xsd:documentation>Direction of this coordinate system axis (or in the case of Cartesian projected coordinates, the direction of this coordinate system axis at the origin). Examples: north or south, east or west, up or down. Within any set of coordinate system axis, only one of each pair of terms can be used. </xsd:documentation>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
<xsd:attribute name="uom" type="anyURI" use="required">
<xsd:annotation>
<xsd:documentation>Identifier of the unit of measure used for this coordinate system axis. </xsd:documentation>
</xsd:annotation>
</xsd:attribute>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
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