EPSG:1068

Height Depth Reversal

Attributes

Data source: OGP

Information source: EPSG Guidance Note #7-2.

Revision date: 2017-06-06

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Definition: OGP XML

<?xml version="1.0" encoding="UTF-8"?>
 <gml:OperationMethod xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-method-1068">
   <gml:metaDataProperty>
      <epsg:CommonMetaData>
         <epsg:informationSource>EPSG Guidance Note #7-2.</epsg:informationSource>
         <epsg:revisionDate>2017-06-06</epsg:revisionDate>
         <epsg:changes>
            <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2014.027" />
         </epsg:changes>
         <epsg:show>true</epsg:show>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
   </gml:metaDataProperty>
   <gml:metaDataProperty>
      <epsg:CoordinateOperationMethodMetaData>
         <epsg:isOperationReversible>true</epsg:isOperationReversible>
         <epsg:example>1. Source CRS = MSL height, in which a height = -300m. Then target CRS = MSL depth, and the depth = (-300 * -1) = 300m

2. Source CRS = NAVD88 depth (ftUS), in which a depth = 500 ftUS. Then target CRS = NAVD88 height (ftUS), and the height = (500 * -1) = -500 ftUS</epsg:example>
      </epsg:CoordinateOperationMethodMetaData>
   </gml:metaDataProperty>
   <gml:identifier codeSpace="IOGP">urn:ogc:def:method:EPSG::1068</gml:identifier>
   <gml:name>Height Depth Reversal</gml:name>
   <gml:formula>Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.

If there is a requirement to either (i) change a height in a source CRS to a depth in a target CRS referenced  to the same vertical datum, or (ii) change a depth in the a source CRS to a height in a target CRS referenced  to the same vertical datum, then the following generic formula can be used:

X2 = –1 * X1</gml:formula>
</gml:OperationMethod>
<?xml version="1.0" encoding="UTF-8"?>
 <gml:OperationMethod xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-method-1068">
   <gml:metaDataProperty>
      <epsg:CommonMetaData>
         <epsg:informationSource>EPSG Guidance Note #7-2.</epsg:informationSource>
         <epsg:revisionDate>2017-06-06</epsg:revisionDate>
         <epsg:changes>
            <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2014.027" />
         </epsg:changes>
         <epsg:show>true</epsg:show>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
   </gml:metaDataProperty>
   <gml:metaDataProperty>
      <epsg:CoordinateOperationMethodMetaData>
         <epsg:isOperationReversible>true</epsg:isOperationReversible>
         <epsg:example>1. Source CRS = MSL height, in which a height = -300m. Then target CRS = MSL depth, and the depth = (-300 * -1) = 300m

2. Source CRS = NAVD88 depth (ftUS), in which a depth = 500 ftUS. Then target CRS = NAVD88 height (ftUS), and the height = (500 * -1) = -500 ftUS</epsg:example>
      </epsg:CoordinateOperationMethodMetaData>
   </gml:metaDataProperty>
   <gml:identifier codeSpace="IOGP">urn:ogc:def:method:EPSG::1068</gml:identifier>
   <gml:name>Height Depth Reversal</gml:name>
   <gml:formula>Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.

If there is a requirement to either (i) change a height in a source CRS to a depth in a target CRS referenced  to the same vertical datum, or (ii) change a depth in the a source CRS to a height in a target CRS referenced  to the same vertical datum, then the following generic formula can be used:

X2 = –1 * X1</gml:formula>
</gml:OperationMethod>