Geodetic CRS: NAD27(76)
Datum: North American Datum 1927 (1976)
Ellipsoid: Clarke 1866
Prime meridian: Greenwich
Data source: OGP
Information source: Geodetic Survey of Canada http://www.geod.nrcan.gc.ca/
Revision date: 2019-09-17
Scope: Not known.
Remarks: Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(76) (code 4608) and NAD83 (code 4269) have longitudes positive east. May be taken as approximate transformation NAD27(76) to WGS 84 - see code 1690.
Method: NTv2
Area of use: Canada - Ontario.
Description: May76v20.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="iogp-op-1463"> <gml:metaDataProperty> <epsg:CommonMetaData> <epsg:type>transformation</epsg:type> <epsg:alias alias="562" code="9094" codeSpace="urn:ogc:def:naming-system:EPSG::1046" /> <epsg:alias alias="NAD27(MAY76) to NAD83(Original) [ONv1]" code="9095" codeSpace="urn:ogc:def:naming-system:EPSG::1047" /> <epsg:informationSource>Geodetic Survey of Canada http://www.geod.nrcan.gc.ca/</epsg:informationSource> <epsg:revisionDate>2019-09-17</epsg:revisionDate> <epsg:changes> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2000.140" /> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2005.460" /> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2018.026" /> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2019.034" /> </epsg:changes> <epsg:show>true</epsg:show> <epsg:isDeprecated>false</epsg:isDeprecated> </epsg:CommonMetaData> </gml:metaDataProperty> <gml:metaDataProperty> <epsg:CoordinateOperationMetaData> <epsg:variant>1</epsg:variant> </epsg:CoordinateOperationMetaData> </gml:metaDataProperty> <gml:identifier codeSpace="IOGP">urn:ogc:def:coordinateOperation:EPSG::1463</gml:identifier> <gml:name>NAD27(76) to NAD83 (1)</gml:name> <gml:remarks>Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27(76) (code 4608) and NAD83 (code 4269) have longitudes positive east. May be taken as approximate transformation NAD27(76) to WGS 84 - see code 1690.</gml:remarks> <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1367" /> <gml:scope>Not known.</gml:scope> <gml:operationVersion>SGQ-Can Ont</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::4608" /> <gml:targetCRS xlink:href="urn:ogc:def:crs:EPSG::4269" /> <gml:method xlink:href="urn:ogc:def:method:EPSG::9615" /> <gml:parameterValue> <gml:ParameterValue> <gml:valueFile>May76v20.gsb</gml:valueFile> <gml:operationParameter xlink:href="urn:ogc:def:parameter:EPSG::8656" /> </gml:ParameterValue> </gml:parameterValue> </gml:Transformation>