Quality Examples
These examples are only applicable in case of an ISO 19139 XML Schema Implementation of the first generation of standards. Their use can require a higher conformance class.
Quantitative result
Here are several examples of quantitative results.
The use of DMF RecordType element requires the DMF/Specific conformance class.
Boolean result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<!-- ISO 19103 Boolean is implemented in XML as xs:boolean.
The current location of the XML Schema implementation of the xs namespace is http://www.w3.org/2001/XMLSchema.xsd. But, its location is subject to change. A URN is used instead of a URL to prevent any change. urn:dgiwg:metadata:dmf:1.0:xmlns:w3:XMLSchema:2001:boolean currently corresponds to http://www.w3.org/2001/XMLSchema.xsd#boolean -->
<gmd:valueType>
<gco:RecordType xlink:href="http://www.w3.org/2001/XMLSchema.xsd#boolean">Boolean</gco:RecordType>
</gmd:valueType>
<!-- The value unit can be defaulted to unity for Boolean
NOTE: The xlink:href attribute for the unit of measure is nowadays pointing on the OGC register. It will point on the DGIWG register when this one will be operational. -->
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<!-- Encoding of a record containing a Boolean value -->
<gmd:value>
<gco:Record xsi:type="xs:boolean">true</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>Citation result
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gmd:1.0:CI_Citation_Type">CI_Citation</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="gmd:CI_Citation_Type">
<gmd:title>
<gco:CharacterString>Citation title</gco:CharacterString>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date>
<gco:Date>2013-05-27</gco:Date>
</gmd:date>
<gmd:dateType>
<gmd:CI_DateTypeCode codeListValue="creation" codeList="urn:dgiwg:metadata:dmf:1.0:iso19115:2003:CI_DateTypeCode" codeSpace="urn:dgiwg">urn:dgiwg:metadata:dmf:1.0:iso19115:2003:CI_DateTypeCode:creation</gmd:CI_DateTypeCode>
</gmd:dateType>
</gmd:CI_Date>
</gmd:date>
</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Date result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gco:1.0:Date_Type">Date</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="gco:Date_Type">2013-05-27</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
DateTime result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:w3:XMLSchema:2001:dateTime">DateTime</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="xs:dateTime">2013-05-27T18:07:34</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
File result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.isotc211.org/2005/gmx http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmx/gmx.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gmx:1.0:MX_SupportFile_Type">MX_SupportFile</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="gmx:MX_SupportFile_Type" >
<gmx:fileName><gmx:FileName src="thePath/theFileName.xml">Title of the support file</gmx:FileName></gmx:fileName>
<gmx:fileDescription><gco:CharacterString>An explanation of the content of the support file</gco:CharacterString></gmx:fileDescription>
<gmx:fileType><gmx:MimeFileType type="text/xml">XML File</gmx:MimeFileType></gmx:fileType>
</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Integer result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="http://www.w3.org/2001/XMLSchema.xsd#integer">Integer</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="xs:integer">12</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Float result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href=" http://www.w3.org/2001/XMLSchema.xsd#double">Real</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/metre"/>
<gmd:value>
<gco:Record xsi:type="xs:double">12.0</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Record result
A result is expressed using the standard XML Schema Implementation of a standard data type when it exists. The DMF Record enables a generic encoding of any type of structured information which needs to be expressed while no standard encoding is available. A record expressing the red, green and blue component of an RGB image, and a record expressing a 2D matrix of real values are provided as examples.
RGB matrix
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:egco="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco http://www.dgiwg.org/xmln/dmf/1.0/iso-g1/egco/egco.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco:Record">Record</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<egco:Record>
<egco:property name="red">
<gml:Count>12</gml:Count>
</egco:property>
<egco:property name="green">
<gml:Count>223</gml:Count>
</egco:property>
<egco:property name="blue">
<gml:Count>153</gml:Count>
</egco:property>
</egco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
2D matrix
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:egco="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco http://www.dgiwg.org/xmln/dmf/1.0/iso-g1/egco/egco.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:xmlns:dmf:1.0:iso-g1:egco:Record">Record</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<egco:Record>
<egco:property name="2dMatrix">
<gml:ValueArray gml:id="rows">
<gml:valueComponent>
<gml:QuantityList uom="http://www.opengis.net/def/uom/OGC/1.0/metre">12.0 25.0 inapplicable 36.0 missing</gml:QuantityList>
</gml:valueComponent>
<gml:valueComponent>
<gml:QuantityList uom="http://www.opengis.net/def/uom/OGC/1.0/metre">13.0 inapplicable 36.0 missing 12.0</gml:QuantityList>
</gml:valueComponent>
</gml:ValueArray>
</egco:property>
</egco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Example of Quantitative Result
Horizontal geometric accuracy
This quality report provides the absolute horizontal accuracy of the data. The DMF view of this result is as following:
| Identifier | Value | |
| measureName | Horizontal accuracy | |
| measureDescription | This measure provides the absolute horizontal accuracy of the data. | |
| method | The method used is described in STANAG 2215. | |
| qtyResult
|
unit | meter |
| result | 12.0 | |
And encoded in XML as a float result:
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_AbsoluteExternalPositionalAccuracy>
<gmd:nameOfMeasure>
<gco:CharacterString> Horizontal accuracy</gco:CharacterString>
</gmd:nameOfMeasure>
<gmd:measureDescription>
<gco:CharacterString> This measure provides the absolute horizontal accuracy of the data.</gco:CharacterString>
</gmd:measureDescription>
<gmd:evaluationMethodDescription>
<gco:CharacterString> The method used is described in STANAG 2215.</gco:CharacterString>
</gmd:evaluationMethodDescription>
</gmd:result>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href=" http://www.w3.org/2001/XMLSchema.xsd#double">Real</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/metre"/>
<gmd:value>
<gco:Record xsi:type="xs:double">12.0</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
</gmd:result>
</gmd:DQ_AbsoluteExternalPositionalAccuracy>
Descriptive result
Descriptive results can be expressed through different ways: String, FreeText or Anchor. The expression through Anchor requires a conformance to the DMF/Data+ metadata class.
Anchor result
This type of result requires a conformance to the DMF/Data+ conformance class.
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.isotc211.org/2005/gmx http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmx/gmx.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gmx:1.0:Anchor_Type">Anchor</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="gmx:Anchor_Type" xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gmx:1.0:Anchor_Type"> Anchor XML Type</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
FreeText result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:isotc211:gmd:1.0:PT_FreeText_Type">PT_FreeText</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="gmd:PT_FreeText_Type">
<gmd:textGroup>
<gmd:LocalisedCharacterString locale="urn:dgiwg:metadata:dmf:1.0:locale:eng:uk:utf8">Any localised character string</gmd:LocalisedCharacterString>
</gmd:textGroup>
<gmd:textGroup>
<gmd:LocalisedCharacterString locale="urn:dgiwg:metadata:dmf:1.0:locale:fra:fra:utf8">N'importe quelle chaîne de caractères</gmd:LocalisedCharacterString>
</gmd:textGroup>
</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
String result
<?xml version="1.0" encoding="UTF-8"?>
<gmd:DQ_QuantitativeResult xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://standards.iso.org/itff/PubliclyAvailableStandards/ISO_19139_Schemas/gmd/gmd.xsd">
<gmd:valueType>
<gco:RecordType xlink:href="urn:dgiwg:metadata:dmf:1.0:xmlns:w3:XMLSchema:2001:string">CharacterString</gco:RecordType>
</gmd:valueType>
<gmd:valueUnit xlink:href="http://www.opengis.net/def/uom/OGC/1.0/unity"/>
<gmd:value>
<gco:Record xsi:type="xs:string">Any character string</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
Coverage result
Example of vector quality coverage result
Cartography of homogeneous quality zones
This mask provides qualitative information about the quality of the product.
Format: GML
Type of geometry: surface
Content:Contains homogeneous quality areas.
To each area are associated the four following information:* HQUAL (String) A mark on the planimetric geometric precision from A to E.
- VQUAL (String) A mark on the altimetric geometric precision from 0 to 4.
- FIDEL (String) An indication on the fidelity towards the specification: M, R or X
- VALDAT (String) The year in which the information is considered as valid.
The information is represented this way in DMF:
| Unregulated quality element:
DQ_AbsoluteExternalPositionalAccuracy |
||
| measureName | Planimetric quality cartography | |
| measureDescription | This layer contains the planimetric evaluated quality | |
| method | Automatic derivation | |
| coverage Result | See next table |
| coverageResult | |||||
| format | |||||
| citation | Name | GML 3.2.1 | |||
| Version | 3.2.1 | ||||
| geometry | surface | ||||
| file | name | ./QUALITY/<FileName>.gml | |||
| description | File containing the quality coverage | ||||
| content | |||||
| contentType | thematicClassification | ||||
| Range | |||||
| identifier | HQUAL | ||||
| type | string | ||||
| descriptor | Horizontal quality | ||||
| Range | |||||
| identifier | VQUAL | ||||
| type | string | ||||
| descriptor | Vertical quality | ||||
| Range | |||||
| identifier | FIDEL | ||||
| type | string | ||||
| descriptor | Compliance | ||||
| Range | |||||
| identifier | VALDAT | ||||
| type | string | ||||
| descriptor | Date of validity | ||||
| SpecialCell | |||||
| name | HQUAL#A | ||||
| definition | Horizontal quality better than 6m | ||||
| cellvalue | A | ||||
| SpecialCell | |||||
| name | HQUAL#B | ||||
| definition | Horizontal quality better than 12,5m | ||||
| cellvalue | B | ||||
| SpecialCell | |||||
| name | HQUAL#C | ||||
| definition | Horizontal quality better than 25m | ||||
| cellvalue | C | ||||
| SpecialCell | |||||
| name | HQUAL#D | ||||
| definition | Horizontal quality worse than 25m | ||||
| cellvalue | D | ||||
| SpecialCell | |||||
| name | HQUAL#E | ||||
| definition | Unevaluated or unknown horizontal quality | ||||
| cellvalue | E | ||||
| SpecialCell | |||||
| name | VQUAL#4 | ||||
| definition | Unevaluated or unknown vertical quality | ||||
| cellvalue | 4 | ||||
| SpecialCell | |||||
| name | FIDEL#M | ||||
| definition | Compliant to product requirements | ||||
| cellvalue | M | ||||
| SpecialCell | |||||
| name | FIDEL#R | ||||
| definition | Revision / update required | ||||
| cellvalue | R | ||||
| SpecialCell | |||||
| name | FIDEL#X | ||||
| definition | Unevaluated or unknown compliance | ||||
| cellvalue | X | ||||
| SpecialCell | |||||
| name | VALDAT#YYYY | ||||
| definition | Unknown date of validity | ||||
| cellvalue | YYYY |
This would lead to the following gml file:
<?xml version="1.0" encoding="UTF-8"?>
<gml:MultiSurfaceCoverage xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/gml/3.2 http://schemas.opengis.net/gml/3.2.1/gml.xsd" gml:id="coverage">
<gml:multiSurfaceDomain>
<gml:MultiSurface gml:id="geometry" srsName="urn:x-ogc:def:crs:EPSG::4326">
<gml:surfaceMember>
<gml:Surface gml:id="surface1">
<gml:patches>
<gml:PolygonPatch>
<gml:exterior>
<gml:Ring>
<gml:curveMember>
<gml:Curve gml:id="curve1">
<gml:segments>
<gml:LineStringSegment>
<gml:pos>21 20</gml:pos>
<gml:pos>20 20</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 20</gml:pos>
<gml:pos>20 21</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 21</gml:pos>
<gml:pos>20 22</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 22</gml:pos>
<gml:pos>21 22</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>21 22</gml:pos>
<gml:pos>21 21</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>21 21</gml:pos>
<gml:pos>21 20</gml:pos>
</gml:LineStringSegment>
</gml:segments>
</gml:Curve>
</gml:curveMember>
</gml:Ring>
</gml:exterior>
</gml:PolygonPatch>
</gml:patches>
</gml:Surface>
</gml:surfaceMember>
</gml:MultiSurface>
</gml:multiSurfaceDomain>
<gml:rangeSet>
<gml:ValueArray gml:id="HQUAL">
<gml:valueComponents>
<gml:Category>A</gml:Category>
</gml:valueComponents>
</gml:ValueArray>
<gml:ValueArray gml:id="VQUAL">
<gml:valueComponents>
<gml:Category>4</gml:Category>
</gml:valueComponents>
</gml:ValueArray>
<gml:ValueArray gml:id="FIDEL">
<gml:valueComponents>
<gml:Category>M</gml:Category>
</gml:valueComponents>
</gml:ValueArray>
<gml:ValueArray gml:id="VALDAT">
<gml:valueComponents>
<gml:Category>2007</gml:Category>
</gml:valueComponents>
</gml:ValueArray>
</gml:rangeSet>
</gml:MultiSurfaceCoverage>==== Data gaps mask ====
This mask provides information about the inclusion of gaps (no data) into the dataset.
Format: GML
Type of geometry: surface
Content: gaps.
To each area are associated the following information:* Gaps reason (String): An indication of the reason why there is no data on the area (sea, cloud, etc.).
The information is represented this way in DMF:
| Unregulated quality element:
DQ_CompletenessOmission |
||
| measureName | Data gaps mask | |
| measureDescription | Detection of “no data” area | |
| method | Automatic derivation | |
| coverage Result | See next table |
| coverageResult | |||||
| format | |||||
| citation | Name | GML 3.2.1 | |||
| Version | 3.2.1 | ||||
| geometry | surface | ||||
| file | name | ./QUALITY/<FileName>.gml | |||
| description | File containing the quality coverage | ||||
| content | |||||
| contentType | thematicClassification | ||||
| Range | |||||
| identifier | GAP | ||||
| type | string | ||||
| descriptor | Reason of the gap | ||||
| SpecialCell | |||||
| name | GAP#UNKNOWN | ||||
| definition | Unknown reason for the gap | ||||
| cellvalue | UNKNOWN |
This would lead to the following gml file:
<?xml version="1.0" encoding="UTF-8"?>
<gml:MultiSurfaceCoverage xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/gml/3.2 http://schemas.opengis.net/gml/3.2.1/gml.xsd" gml:id="coverage">
<gml:multiSurfaceDomain>
<gml:MultiSurface gml:id="geometry" srsName="urn:x-ogc:def:crs:EPSG::4326">
<gml:surfaceMember>
<gml:Surface gml:id="surface1">
<gml:patches>
<gml:PolygonPatch>
<gml:exterior>
<gml:Ring>
<gml:curveMember>
<gml:Curve gml:id="curve1">
<gml:segments>
<gml:LineStringSegment>
<gml:pos>21 20</gml:pos>
<gml:pos>20 20</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 20</gml:pos>
<gml:pos>20 21</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 21</gml:pos>
<gml:pos>20 22</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>20 22</gml:pos>
<gml:pos>21 22</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>21 22</gml:pos>
<gml:pos>21 21</gml:pos>
</gml:LineStringSegment>
<gml:LineStringSegment>
<gml:pos>21 21</gml:pos>
<gml:pos>21 20</gml:pos>
</gml:LineStringSegment>
</gml:segments>
</gml:Curve>
</gml:curveMember>
</gml:Ring>
</gml:exterior>
</gml:PolygonPatch>
</gml:patches>
</gml:Surface>
</gml:surfaceMember>
</gml:MultiSurface>
</gml:multiSurfaceDomain>
<gml:rangeSet>
<gml:ValueArray gml:id="GAP">
<gml:valueComponents>
<gml:Category>cloud</gml:Category>
</gml:valueComponents>
</gml:ValueArray>
</gml:rangeSet>
</gml:MultiSurfaceCoverage>
Example of raster quality coverage result
Water mask
It contains water surfaces larger than 3km2 for which the DEM must be set to a constant altitude. It is produced by manual selection on an orthoimage, or automatic image-cutting process.
Format: Geotiff
Content:
0: water or sea
| Unregulated quality Element: DQ_QuantitativeAttributeAccuracy | ||
| measureName | Water mask | |
| measureDescription | This layer contains water areas | |
| method | automatic derivation | |
| coverageResult | See next table |
| coverageResult | ||||
| format | ||||
| citation | Name | GEOTIFF | ||
| Version | 1.0 | |||
| gridRep | axisDimensionsProperties | dimensionName | row | |
| dimensionSize | 1024 | |||
| axisDimensionsProperties | dimensionName | column | ||
| dimensionSize | 1024 | |||
| cellGeom | area | |||
| file | name | ./QUALITY/<File Name>.tif | ||
| description | Image of the quality result. | |||
| content | contentType | image | ||
| range | identifier | 1 | ||
| type | integer | |||
| description | grayscale | |||
| bitsPerValue | 8 | |||
| specialCell | name | Water | ||
| definition | Water area or sea presence | |||
| cellValue | 0 | |||
| specialCell | name | No Water | ||
| definition | Absence of water | |||
| cellValue | 1 | |||
