# EPSG:54

## Geodetic longitude

### Attributes

Unit: degree minute second hemisphere

Data source: OGP

Information source: OGP

Revision date: 2000-03-07

Orientation: east

Abbreviation: Long

Axis order: 2..

Remarks: Used in geographic 2D and geographic 3D coordinate reference systems.

Description: Angle from the prime meridian plane to the meridian plane passing through the given point, eastwards usually treated as positive.

#### Export

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:CoordinateSystemAxis</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">uom=</span><span class="s">&quot;urn:ogc:def:uom:EPSG::9108&quot;</span> <span class="na">gml:id=</span><span class="s">&quot;epsg-axis-54&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;gml:descriptionReference</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:axis-name:EPSG::9902&quot;</span> <span class="nt">/&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:axis:EPSG::54<span class="nt">&lt;/gml:identifier&gt;</span> <span class="nt">&lt;gml:axisAbbrev&gt;</span>Long<span class="nt">&lt;/gml:axisAbbrev&gt;</span> <span class="nt">&lt;gml:axisDirection</span> <span class="na">codeSpace=</span><span class="s">&quot;EPSG&quot;</span><span class="nt">&gt;</span>east<span class="nt">&lt;/gml:axisDirection&gt;</span> <span class="nt">&lt;/gml:CoordinateSystemAxis&gt;</span> </pre></div>
```<?xml version="1.0" encoding="UTF-8"?>