From MapTiler Team
Geodetic CRS: NTF
Datum: Nouvelle Triangulation Francaise
Ellipsoid: Clarke 1880 (IGN)
Prime meridian: Greenwich
Data source: OGP
Information source: OGP
Revision date: 2007-05-29
Scope: For applications requiring an accuracy of better than 1 metre.
Remarks: These parameter values are taken from NTF to RGR93 (2) (code 15940) as RGR93 may be considered equivalent to WGS 84 within the accuracy of the transformation. Emulation of France Geocentric Interpolation method tfm code 15939.
Method: NTv2
Area of use: France - mainland onshore.
Description: rgf93_ntf.gsb
Definition: OGP XML
&stroke=red&width=2&path=42.33,-4.87|51.14,-4.87|51.14,8.23|42.33,8.23|42.33,-4.87)
<?xml version="1.0" encoding="UTF-8"?>
<gml:Transformation xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="epsg-op-15942">
<gml:metaDataProperty>
<epsg:CommonMetaData>
<epsg:type>transformation</epsg:type>
<epsg:informationSource>OGP</epsg:informationSource>
<epsg:revisionDate>2007-05-29</epsg:revisionDate>
<epsg:show>true</epsg:show>
<epsg:isDeprecated>true</epsg:isDeprecated>
</epsg:CommonMetaData>
</gml:metaDataProperty>
<gml:metaDataProperty>
<epsg:CoordinateOperationMetaData>
<epsg:variant>3</epsg:variant>
</epsg:CoordinateOperationMetaData>
</gml:metaDataProperty>
<gml:identifier codeSpace="OGP">urn:ogc:def:coordinateOperation:EPSG::15942</gml:identifier>
<gml:name>NTF to WGS 84 (3)</gml:name>
<gml:remarks>These parameter values are taken from NTF to RGR93 (2) (code 15940) as RGR93 may be considered equivalent to WGS 84 within the accuracy of the transformation. Emulation of France Geocentric Interpolation method tfm code 15939.</gml:remarks>
<gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1326" />
<gml:scope>For applications requiring an accuracy of better than 1 metre.</gml:scope>
<gml:operationVersion>EPSG-Fra 1m emulation</gml:operationVersion>
<gml:coordinateOperationAccuracy>
<gmd:DQ_RelativeInternalPositionalAccuracy>
<gmd:result>
<gmd:DQ_QuantitativeResult>
<gmd:valueUnit xlink:href="urn:ogc:def:uom:EPSG::9001" />
<gmd:value>
<gco:Record>
<gco:Decimal>1</gco:Decimal>
</gco:Record>
</gmd:value>
</gmd:DQ_QuantitativeResult>
</gmd:result>
</gmd:DQ_RelativeInternalPositionalAccuracy>
</gml:coordinateOperationAccuracy>
<gml:sourceCRS xlink:href="urn:ogc:def:crs:EPSG::4275" />
<gml:targetCRS xlink:href="urn:ogc:def:crs:EPSG::4326" />
<gml:method xlink:href="urn:ogc:def:method:EPSG::9615" />
<gml:parameterValue>
<gml:ParameterValue>
<gml:valueFile>rgf93_ntf.gsb</gml:valueFile>
<gml:operationParameter xlink:href="urn:ogc:def:parameter:EPSG::8656" />
</gml:ParameterValue>
</gml:parameterValue>
</gml:Transformation>
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