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
<?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>