EPSG:1575

NAD27(CGQ77) to NAD83 (2)

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Attributes

Geodetic CRS: NAD27(CGQ77)

Datum: North American Datum 1927 (CGQ77)

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: OGP

Information source: Geodetic Service of Quebec.

Revision date: 2019-09-17

Scope: Spatial referencing.

Remarks: Also distributed with file name CGQ77-83.gsb. Replaces NAD27(CGQ77) to NAD83 (1) (code 1451). Can be taken as approx transformation to WGS 84 - see code 1691.

Method: NTv2

Area of use: Canada - Quebec.

Description: CQ77NA83.GSB

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Definition: OGP XML

<div class="syntax"><pre><span class="cp">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span> <span class="nt">&lt;gml:Transformation</span> <span class="na">xmlns:epsg=</span><span class="s">&quot;urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset&quot;</span> <span class="na">xmlns:gco=</span><span class="s">&quot;http://www.isotc211.org/2005/gco&quot;</span> <span class="na">xmlns:gmd=</span><span class="s">&quot;http://www.isotc211.org/2005/gmd&quot;</span> <span class="na">xmlns:gml=</span><span class="s">&quot;http://www.opengis.net/gml/3.2&quot;</span> <span class="na">xmlns:xlink=</span><span class="s">&quot;http://www.w3.org/1999/xlink&quot;</span> <span class="na">gml:id=</span><span class="s">&quot;iogp-op-1575&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;gml:metaDataProperty&gt;</span> <span class="nt">&lt;epsg:CommonMetaData&gt;</span> <span class="nt">&lt;epsg:type&gt;</span>transformation<span class="nt">&lt;/epsg:type&gt;</span> <span class="nt">&lt;epsg:alias</span> <span class="na">alias=</span><span class="s">&quot;638&quot;</span> <span class="na">code=</span><span class="s">&quot;9160&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::1046&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;epsg:alias</span> <span class="na">alias=</span><span class="s">&quot;NAD27(CGQ77) to NAD83(Original) [QCv1]&quot;</span> <span class="na">code=</span><span class="s">&quot;9161&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::1047&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;epsg:informationSource&gt;</span>Geodetic Service of Quebec.<span class="nt">&lt;/epsg:informationSource&gt;</span> <span class="nt">&lt;epsg:revisionDate&gt;</span>2019-09-17<span class="nt">&lt;/epsg:revisionDate&gt;</span> <span class="nt">&lt;epsg:changes&gt;</span> <span class="nt">&lt;epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:change-request:EPSG::2007.043&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:change-request:EPSG::2019.034&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/epsg:changes&gt;</span> <span class="nt">&lt;epsg:show&gt;</span>true<span class="nt">&lt;/epsg:show&gt;</span> <span class="nt">&lt;epsg:isDeprecated&gt;</span>false<span class="nt">&lt;/epsg:isDeprecated&gt;</span> <span class="nt">&lt;/epsg:CommonMetaData&gt;</span> <span class="nt">&lt;/gml:metaDataProperty&gt;</span> <span class="nt">&lt;gml:metaDataProperty&gt;</span> <span class="nt">&lt;epsg:CoordinateOperationMetaData&gt;</span> <span class="nt">&lt;epsg:variant&gt;</span>2<span class="nt">&lt;/epsg:variant&gt;</span> <span class="nt">&lt;/epsg:CoordinateOperationMetaData&gt;</span> <span class="nt">&lt;/gml:metaDataProperty&gt;</span> <span class="nt">&lt;gml:identifier</span> <span class="na">codeSpace=</span><span class="s">&quot;IOGP&quot;</span><span class="nt">&gt;</span>urn:ogc:def:coordinateOperation:EPSG::1575<span class="nt">&lt;/gml:identifier&gt;</span> <span class="nt">&lt;gml:name&gt;</span>NAD27(CGQ77) to NAD83 (2)<span class="nt">&lt;/gml:name&gt;</span> <span class="nt">&lt;gml:remarks&gt;</span>Also distributed with file name CGQ77-83.gsb. Replaces NAD27(CGQ77) to NAD83 (1) (code 1451). Can be taken as approx transformation to WGS 84 - see code 1691.<span class="nt">&lt;/gml:remarks&gt;</span> <span class="nt">&lt;gml:domainOfValidity</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:area:EPSG::1368&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:scope&gt;</span>Spatial referencing.<span class="nt">&lt;/gml:scope&gt;</span> <span class="nt">&lt;gml:operationVersion&gt;</span>SGQ-Can QC NT2<span class="nt">&lt;/gml:operationVersion&gt;</span> <span class="nt">&lt;gml:coordinateOperationAccuracy&gt;</span> <span class="nt">&lt;gmd:DQ_RelativeInternalPositionalAccuracy&gt;</span> <span class="nt">&lt;gmd:result&gt;</span> <span class="nt">&lt;gmd:DQ_QuantitativeResult&gt;</span> <span class="nt">&lt;gmd:valueUnit</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:uom:EPSG::9001&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gmd:value&gt;</span> <span class="nt">&lt;gco:Record&gt;</span> <span class="nt">&lt;gco:Decimal&gt;</span>1.5<span class="nt">&lt;/gco:Decimal&gt;</span> <span class="nt">&lt;/gco:Record&gt;</span> <span class="nt">&lt;/gmd:value&gt;</span> <span class="nt">&lt;/gmd:DQ_QuantitativeResult&gt;</span> <span class="nt">&lt;/gmd:result&gt;</span> <span class="nt">&lt;/gmd:DQ_RelativeInternalPositionalAccuracy&gt;</span> <span class="nt">&lt;/gml:coordinateOperationAccuracy&gt;</span> <span class="nt">&lt;gml:sourceCRS</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:crs:EPSG::4609&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:targetCRS</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:crs:EPSG::4269&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:method</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:method:EPSG::9615&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:parameterValue&gt;</span> <span class="nt">&lt;gml:ParameterValue&gt;</span> <span class="nt">&lt;gml:valueFile&gt;</span>CQ77NA83.GSB<span class="nt">&lt;/gml:valueFile&gt;</span> <span class="nt">&lt;gml:operationParameter</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:parameter:EPSG::8656&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/gml:ParameterValue&gt;</span> <span class="nt">&lt;/gml:parameterValue&gt;</span> <span class="nt">&lt;/gml:Transformation&gt;</span> </pre></div> 
<?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-1575">
  <gml:metaDataProperty>
    <epsg:CommonMetaData>
      <epsg:type>transformation</epsg:type>
      <epsg:alias alias="638" code="9160" codeSpace="urn:ogc:def:naming-system:EPSG::1046" />
      <epsg:alias alias="NAD27(CGQ77) to NAD83(Original) [QCv1]" code="9161" codeSpace="urn:ogc:def:naming-system:EPSG::1047" />
      <epsg:informationSource>Geodetic Service of Quebec.</epsg:informationSource>
      <epsg:revisionDate>2019-09-17</epsg:revisionDate>
      <epsg:changes>
        <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2007.043" />
        <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>2</epsg:variant>
    </epsg:CoordinateOperationMetaData>
  </gml:metaDataProperty>
  <gml:identifier codeSpace="IOGP">urn:ogc:def:coordinateOperation:EPSG::1575</gml:identifier>
  <gml:name>NAD27(CGQ77) to NAD83 (2)</gml:name>
  <gml:remarks>Also distributed with file name CGQ77-83.gsb. Replaces NAD27(CGQ77) to NAD83 (1) (code 1451). Can be taken as approx transformation to WGS 84 - see code 1691.</gml:remarks>
  <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1368" />
  <gml:scope>Spatial referencing.</gml:scope>
  <gml:operationVersion>SGQ-Can QC NT2</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>1.5</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::4609" />
  <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>CQ77NA83.GSB</gml:valueFile>
      <gml:operationParameter xlink:href="urn:ogc:def:parameter:EPSG::8656" />
    </gml:ParameterValue>
  </gml:parameterValue>
</gml:Transformation>