[mythtv-commits] Ticket #8459: [PATCH] Calculate correct Azimuth positioning for Diseqc Rotor

MythTV mythtv at cvs.mythtv.org
Sat May 15 11:10:37 UTC 2010

#8459: [PATCH] Calculate correct Azimuth positioning for Diseqc Rotor
 Reporter:  Pieter Hoekstra <pieter@…>             |       Owner:  janne  
     Type:  defect                                 |      Status:  new    
 Priority:  minor                                  |   Milestone:  unknown
Component:  MythTV - DVB                           |     Version:  0.23rc2
 Severity:  medium                                 |     Mlocked:  0      
 I'm not 100% sure this is a mythtv bug or my misunderstanding.

 When positioning a rotor using GotoXX-diseqc (Diseqc1.3) commands, Myth
 calculates the Azimuth-angle for the current latitude/longitude.

 This Azimuth is visible when running "mythbackend -v important,channel"

 When I compare the Azimuth with other software, like kaffeine, SMWLink
 (www.smw.se/FreeSoftware.htm), xdipo
 (http://panteltje.com/panteltje/satellite/) or sites like
 http://www.satsig.net/ssazelm.htm  myth seems a few degrees wrong...
 Example: For my location the Astra19.2E satellite should point to 15.3E,
 but myth calculates 13.5E

 I have attached a patch that calculates the same value as the calculators

 The current code also calculates the elevation, I removed those lines in
 the patch.

Ticket URL: <http://svn.mythtv.org/trac/ticket/8459>
MythTV <http://www.mythtv.org/>

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