From MapTiler Team
Geodetic CRS: NTF
Datum: Nouvelle Triangulation Francaise
Ellipsoid: Clarke 1880 (IGN)
Prime meridian: Greenwich
Data source: OGP
Information source: ESRI
Revision date: 2007-05-29
Scope: For applications requiring an accuracy of better than 1 metre.
Remarks: Emulation using NTv2 method of France Geocentric Interpolation method tfm NTF to RGF93 (1), code 1053. May be taken as approximate transformation to ETRS89 or WGS 84 - see tfm codes 15941 and 15942.
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-15940">
<gml:metaDataProperty>
<epsg:CommonMetaData>
<epsg:type>transformation</epsg:type>
<epsg:informationSource>ESRI</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>2</epsg:variant>
</epsg:CoordinateOperationMetaData>
</gml:metaDataProperty>
<gml:identifier codeSpace="OGP">urn:ogc:def:coordinateOperation:EPSG::15940</gml:identifier>
<gml:name>NTF to RGF93 (2)</gml:name>
<gml:remarks>Emulation using NTv2 method of France Geocentric Interpolation method tfm NTF to RGF93 (1), code 1053. May be taken as approximate transformation to ETRS89 or WGS 84 - see tfm codes 15941 and 15942.</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>ESRI-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::4171" />
<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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