EPSG:7012

Clarke 1880 (RGS)

Attributes

Unit: metre

Data source: OGP

Information source: Empire Survey Review #32; 1939.

Revision date: 1995-06-02

Remarks: Adopts Clarke's values for a and 1/f. Adopts his 1865 ratio of 39.370432 inches per metre to convert semi-major axis to metres. Also known as Clarke Modified 1880.

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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:Ellipsoid</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:gml=</span><span class="s">&quot;http://www.opengis.net/gml/3.2&quot;</span> <span class="na">gml:id=</span><span class="s">&quot;epsg-ellipsoid-7012&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:alias</span> <span class="na">alias=</span><span class="s">&quot;Clarke Modified 1880&quot;</span> <span class="na">code=</span><span class="s">&quot;62&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::7301&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;epsg:remarks&gt;</span>The Clarke 1880 (RGS) figure is one of several modifications to the original definition. The name Clarke Modified is usually taken to be the RGS modification.<span class="nt">&lt;/epsg:remarks&gt;</span> <span class="nt">&lt;/epsg:alias&gt;</span> <span class="nt">&lt;epsg:informationSource&gt;</span>Empire Survey Review #32; 1939.<span class="nt">&lt;/epsg:informationSource&gt;</span> <span class="nt">&lt;epsg:revisionDate&gt;</span>1995-06-02<span class="nt">&lt;/epsg:revisionDate&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:identifier</span> <span class="na">codeSpace=</span><span class="s">&quot;OGP&quot;</span><span class="nt">&gt;</span>urn:ogc:def:ellipsoid:EPSG::7012<span class="nt">&lt;/gml:identifier&gt;</span> <span class="nt">&lt;gml:name&gt;</span>Clarke 1880 (RGS)<span class="nt">&lt;/gml:name&gt;</span> <span class="nt">&lt;gml:remarks&gt;</span>Adopts Clarke&#39;s values for a and 1/f. Adopts his 1865 ratio of 39.370432 inches per metre to convert semi-major axis to metres. Also known as Clarke Modified 1880.<span class="nt">&lt;/gml:remarks&gt;</span> <span class="nt">&lt;gml:semiMajorAxis</span> <span class="na">uom=</span><span class="s">&quot;urn:ogc:def:uom:EPSG::9001&quot;</span><span class="nt">&gt;</span>6378249.145<span class="nt">&lt;/gml:semiMajorAxis&gt;</span> <span class="nt">&lt;gml:secondDefiningParameter&gt;</span> <span class="nt">&lt;gml:SecondDefiningParameter&gt;</span> <span class="nt">&lt;gml:inverseFlattening</span> <span class="na">uom=</span><span class="s">&quot;urn:ogc:def:uom:EPSG::9201&quot;</span><span class="nt">&gt;</span>293.465<span class="nt">&lt;/gml:inverseFlattening&gt;</span> <span class="nt">&lt;/gml:SecondDefiningParameter&gt;</span> <span class="nt">&lt;/gml:secondDefiningParameter&gt;</span> <span class="nt">&lt;/gml:Ellipsoid&gt;</span> </pre></div>
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   <gml:metaDataProperty>
      <epsg:CommonMetaData>
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            <epsg:remarks>The Clarke 1880 (RGS) figure is one of several modifications to the original definition.  The name Clarke Modified is usually taken to be the RGS modification.</epsg:remarks>
         </epsg:alias>
         <epsg:informationSource>Empire Survey Review #32; 1939.</epsg:informationSource>
         <epsg:revisionDate>1995-06-02</epsg:revisionDate>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
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   <gml:remarks>Adopts Clarke's values for a and 1/f.  Adopts his 1865 ratio of 39.370432 inches per metre to convert semi-major axis to metres. Also known as Clarke Modified 1880.</gml:remarks>
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   <gml:secondDefiningParameter>
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      </gml:SecondDefiningParameter>
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</gml:Ellipsoid>