measures

Table of Contents

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Schema Document Properties

Target Namespacehttp://www.opengis.net/gml
Version3.2.0
Languageen
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations belong to this schema's target namespace.
  • By default, local attribute declarations have no namespace.
Schema Composition
  • This schema includes components from the following schema document(s):
DocumentationSee ISO/DIS 19136 17.3. gml:MeasureType is defined in the basicTypes schema. The measure types defined here correspond with a set of convenience measure types described in ISO/TS 19103. The XML implementation is based on the XML Schema simple type “double” which supports both decimal and scientific notation, and includes an XML attribute “uom” which refers to the units of measure for the value. Note that, there is no requirement to store values using any particular format, and applications receiving elements of this type may choose to coerce the data to any other type as convenient.
Application Datameasures.xsd
More information at: urn:ogc:specification:gml:schema-xsd:measures:3.2.0.

Declared Namespaces

PrefixNamespace
Default namespacehttp://www.w3.org/2001/XMLSchema
xmlhttp://www.w3.org/XML/1998/namespace
gmlhttp://www.opengis.net/gml
Schema Component Representation
<schema xml:lang="en" targetNamespace="http://www.opengis.net/gml" elementFormDefault="qualified" attributeFormDefault="unqualified" version="3.2.0">
<include schemaLocation="units.xsd"/>
...
</schema>
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Global Declarations

Element: angle

Nameangle
Typegml:AngleType
Nillableno
Abstractno
DocumentationThe gml:angle property element is used to record the value of an angle quantity as a single number, with its units.
XML Instance Representation
<gml:angle
uom="gml:UomIdentifier [1]">
gml:MeasureType
</gml:angle>
Schema Component Representation
<element name="angle" type="gml:AngleType"/>
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Element: decimalMinutes

NamedecimalMinutes
Typegml:DecimalMinutesType
Nillableno
Abstractno
Application Datadeprecated
XML Instance Representation
<gml:decimalMinutes> gml:DecimalMinutesType </gml:decimalMinutes>
Schema Component Representation
<element name="decimalMinutes" type="gml:DecimalMinutesType"/>
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Element: degrees

Namedegrees
Typegml:DegreesType
Nillableno
Abstractno
Application Datadeprecated
XML Instance Representation
<gml:degrees
direction="string (value comes from list: {'N'|'E'|'S'|'W'|'+'|'-'}) [0..1]">
gml:DegreeValueType
</gml:degrees>
Schema Component Representation
<element name="degrees" type="gml:DegreesType"/>
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Element: dmsAngle

NamedmsAngle
Typegml:DMSAngleType
Nillableno
Abstractno
Application Datadeprecated
XML Instance Representation
<gml:dmsAngle>
<gml:degrees> ... </gml:degrees> [1]
Start Choice [0..1]
<gml:decimalMinutes> ... </gml:decimalMinutes> [1]
<gml:minutes> ... </gml:minutes> [1]
<gml:seconds> ... </gml:seconds> [0..1]
End Choice
</gml:dmsAngle>
Schema Component Representation
<element name="dmsAngle" type="gml:DMSAngleType"/>
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Element: measure

Namemeasure
Typegml:MeasureType
Nillableno
Abstractno
DocumentationThe value of a physical quantity, together with its unit.
XML Instance Representation
<gml:measure
uom="gml:UomIdentifier [1]">
double
</gml:measure>
Schema Component Representation
<element name="measure" type="gml:MeasureType"/>
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Element: minutes

Nameminutes
Typegml:ArcMinutesType
Nillableno
Abstractno
Application Datadeprecated
XML Instance Representation
<gml:minutes> gml:ArcMinutesType </gml:minutes>
Schema Component Representation
<element name="minutes" type="gml:ArcMinutesType"/>
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Element: seconds

Nameseconds
Typegml:ArcSecondsType
Nillableno
Abstractno
Application Datadeprecated
XML Instance Representation
<gml:seconds> gml:ArcSecondsType </gml:seconds>
Schema Component Representation
<element name="seconds" type="gml:ArcSecondsType"/>
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Global Definitions

Complex Type: AngleChoiceType

Super-types:None
Sub-types:None
NameAngleChoiceType
Abstractno
Application Datadeprecated
XML Instance Representation
<...>
Start Choice [1]
<gml:angle> ... </gml:angle> [1]
<gml:dmsAngle> ... </gml:dmsAngle> [1]
End Choice
</...>
Schema Component Representation
<complexType name="AngleChoiceType">
<choice>
<element ref="gml:angle"/>
<element ref="gml:dmsAngle"/>
</choice>
</complexType>
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Complex Type: AngleType

Super-types:gml:MeasureType < AngleType (by extension)
Sub-types:None
NameAngleType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="AngleType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: AreaType

Super-types:gml:MeasureType < AreaType (by extension)
Sub-types:None
NameAreaType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="AreaType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: DMSAngleType

Super-types:None
Sub-types:None
NameDMSAngleType
Abstractno
Application Datadeprecated
XML Instance Representation
<...>
<gml:degrees> ... </gml:degrees> [1]
Start Choice [0..1]
<gml:decimalMinutes> ... </gml:decimalMinutes> [1]
<gml:minutes> ... </gml:minutes> [1]
<gml:seconds> ... </gml:seconds> [0..1]
End Choice
</...>
Schema Component Representation
<complexType name="DMSAngleType">
<sequence>
<element ref="gml:degrees"/>
<choice minOccurs="0">
<element ref="gml:decimalMinutes"/>
<sequence>
<element ref="gml:minutes"/>
<element ref="gml:seconds" minOccurs="0"/>
</sequence>
</choice>
</sequence>
</complexType>
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Complex Type: DegreesType

Super-types:nonNegativeInteger < DegreeValueType (by restriction) < DegreesType (by extension)
Sub-types:None
NameDegreesType
Abstractno
Application Datadeprecated
XML Instance Representation
<...
direction="string (value comes from list: {'N'|'E'|'S'|'W'|'+'|'-'}) [0..1]">
gml:DegreeValueType
</...>
Schema Component Representation
<complexType name="DegreesType">
<simpleContent>
<extension base="gml:DegreeValueType">
<attribute name="direction">
<simpleType>
<restriction base="string">
<enumeration value="N"/>
<enumeration value="E"/>
<enumeration value="S"/>
<enumeration value="W"/>
<enumeration value="+"/>
<enumeration value="-"/>
</restriction>
</simpleType>
</attribute>
</extension>
</simpleContent>
</complexType>
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Complex Type: GridLengthType

Super-types:gml:MeasureType < GridLengthType (by extension)
Sub-types:None
NameGridLengthType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="GridLengthType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: LengthType

Super-types:gml:MeasureType < LengthType (by extension)
Sub-types:None
NameLengthType
Abstractno
DocumentationThis is a prototypical definition for a specific measure type defined as a vacuous extension (i.e. aliases) of gml:MeasureType. In this case, the content model supports the description of a length (or distance) quantity, with its units. The unit of measure referenced by uom shall be suitable for a length, such as metres or feet.
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="LengthType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: ScaleType

Super-types:gml:MeasureType < ScaleType (by extension)
Sub-types:None
NameScaleType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="ScaleType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: SpeedType

Super-types:gml:MeasureType < SpeedType (by extension)
Sub-types:None
NameSpeedType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="SpeedType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: TimeType

Super-types:gml:MeasureType < TimeType (by extension)
Sub-types:None
NameTimeType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="TimeType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Complex Type: VolumeType

Super-types:gml:MeasureType < VolumeType (by extension)
Sub-types:None
NameVolumeType
Abstractno
XML Instance Representation
<...
uom="gml:UomIdentifier [1]">
gml:MeasureType
</...>
Schema Component Representation
<complexType name="VolumeType">
<simpleContent>
<extension base="gml:MeasureType"/>
</simpleContent>
</complexType>
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Simple Type: ArcMinutesType

Super-types:nonNegativeInteger < ArcMinutesType (by restriction)
Sub-types:None
NameArcMinutesType
Content
  • Base XSD Type: nonNegativeInteger
  • value <= 59
Application Datadeprecated
Schema Component Representation
<simpleType name="ArcMinutesType">
<restriction base="nonNegativeInteger">
<maxInclusive value="59"/>
</restriction>
</simpleType>
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Simple Type: ArcSecondsType

Super-types:decimal < ArcSecondsType (by restriction)
Sub-types:None
NameArcSecondsType
Content
  • Base XSD Type: decimal
  • 0.00 <= value < 60.00
Application Datadeprecated
Schema Component Representation
<simpleType name="ArcSecondsType">
<restriction base="decimal">
<minInclusive value="0.00"/>
<maxExclusive value="60.00"/>
</restriction>
</simpleType>
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Simple Type: DecimalMinutesType

Super-types:decimal < DecimalMinutesType (by restriction)
Sub-types:None
NameDecimalMinutesType
Content
  • Base XSD Type: decimal
  • 0.00 <= value < 60.00
Application Datadeprecated
Schema Component Representation
<simpleType name="DecimalMinutesType">
<restriction base="decimal">
<minInclusive value="0.00"/>
<maxExclusive value="60.00"/>
</restriction>
</simpleType>
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Simple Type: DegreeValueType

Super-types:nonNegativeInteger < DegreeValueType (by restriction)
Sub-types:
NameDegreeValueType
Content
  • Base XSD Type: nonNegativeInteger
  • value <= 359
Application Datadeprecated
Schema Component Representation
<simpleType name="DegreeValueType">
<restriction base="nonNegativeInteger">
<maxInclusive value="359"/>
</restriction>
</simpleType>
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Legend

Complex Type:

Schema Component Type

AusAddress

Schema Component Name
Super-types:Address < AusAddress (by extension)
Sub-types:
  • QLDAddress (by restriction)
If this schema component is a type definition, its type hierarchy is shown in a gray-bordered box.
NameAusAddress
Abstractno
The table above displays the properties of this schema component.
XML Instance Representation
<... country="Australia">
<unitNo> string </unitNo> [0..1]
<houseNo> string </houseNo> [1]
<street> string </street> [1]
Start Choice[1]
<city> string </city> [1]
<town> string </town> [1]
End Choice
<state> AusStates </state> [1]
<postcode> string <<pattern = [1-9][0-9]{3}>> </postcode> [1]?
</...>

The XML Instance Representation table above shows the schema component's content as an XML instance.

Schema Component Representation
<complexTypename="AusAddress">
<complexContent>
<extensionbase="Address">
<sequence>
<elementname="state" type="AusStates"/>
<elementname="postcode">
<simpleType>
<restrictionbase="string">
<patternvalue="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attributename="country" type="string" fixed="Australia"/>
</extension>
</complexContent>
</complexType>
The Schema Component Representation table above displays the underlying XML representation of the schema component. (Annotations are not shown.)
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Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

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