[postgis-devel] [PostGIS] #876: Better document ST_Azimuth

[PostGIS]

#876: Better document ST_Azimuth
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  Reporter:  strk           |       Owner:  robe         
      Type:  task           |      Status:  reopened     
  Priority:  medium         |   Milestone:  PostGIS 2.0.0
 Component:  documentation  |     Version:  trunk        
Resolution:                 |    Keywords:               
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Comment(by strk):

 I think the vertical angle comes from true north based navigation systems:
 http://en.wikipedia.org/wiki/Azimuth#Navigation

 << Today, the reference plane for an azimuth in a general navigational
 context is typically true north, measured as a 0° azimuth >>

 Would be nice to keep WKT for the image.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/876#comment:4>
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