<!--
osgEarth Sample

This example demonstrates how to set a particular datum for a geocentric map.
By default, a geocentric map will use a WGS84 datum. Use the "profile" tag
to specify a different one is so desired. The contents of the "srs" tag can be
any SRS initialization string (like PROJ4 or WKT).

This example renders a NAD27 globe instead of a WGS84 globe.

See this site for SRS codes and PROJ4 initialization strings:
http://spatialreference.org
-->

<map name="datum override example" type="geocentric" version="2">
    
    <options>
        <lighting>false</lighting>
        <profile srs="+proj=longlat +ellps=clrk66 +datum=NAD27 +no_defs"/>
    </options> 
    
    <image name="pelican nasa blue marble" driver="tms">
        <url>http://demo.pelicanmapping.com/rmweb/data/bluemarble-tms/tms.xml</url>
    </image>
</map>
