Schema Central > NIEM 2.1 > units.xsd > gml:UnitDefinition
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A gml:UnitDefinition is a general definition of a unit of measure. This generic element is used only for units for which no relationship with other units or units systems is known.
The content model of gml:UnitDefinition adds three additional properties to gml:Definition, gml:quantityType, gml:quantityTypeReference and gml:catalogSymbol.  
The gml:catalogSymbol property optionally gives the short symbol used for this unit. This element is usually used when the relationship of this unit to other units or units systems is unknown.

Element information

Type: gml:UnitDefinitionType

Properties: Global, Qualified



gml:id [1..1]xsd:IDfrom type gml:DefinitionBaseType

Used in

Substitution hierarchy

Sample instance

<gml:UnitDefinition gml:id="ID">
      <gml:GenericMetaData>Any text, intermingled with:
         <!--any element-->
   <gml:identifier codeSpace="">string</gml:identifier>

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