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ivac2:firdef_config_fir [2017/09/02 17:31]
ian.beswick [Magvar] 		ivac2:firdef_config_fir [2017/09/02 19:40] (current)
ian.beswick [Theme]
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 //To convert from a true bearing to a magnetic bearing you deduct the magnetic-variation. If it is a west declination you are deducting a negative number which is the same as adding. For an east declination you are deducting the variation. //To convert from a true bearing to a magnetic bearing you deduct the magnetic-variation. If it is a west declination you are deducting a negative number which is the same as adding. For an east declination you are deducting the variation.
 To put it another way "West is Best. East is Least"​.//​ To put it another way "West is Best. East is Least"​.//​
 +===== North =====
 +
 +Default preset to load if not specified in atc.xml
 +
 +
 +^Element ^Attribute ^Format ​ ^Comment |
 +|north|value|string|"​mag"​ or "​true"​|
 +|north |autorotate|boolean|"​true"​ or "​false"​|
 +
 +Allows FIR-wide choice between magnetic-north upwards or true-north upwards; map projections from polar lat/lon coordinates to flat screen coordinates mean that this will only be correct at the middle of the FIR or preset.
 +
 +If autorotate is set "​true",​ north upwards will apply at the centre of each preset.
 +If autorotate is "​false",​ presets will NOT be automatically rotated; instead, the map will stay in the default orientation for the whole FIR, which will typically be with true-north pointing upwards at the centre of the FIR.
 +This setting will make little difference for FIRs at equatorial/​tropical latitudes, but for FIRs with higher northerly or southerly latitudes the map projection means that north changes direction on-screen either east or west of the middle of the FIR/preset.
 +
 +//The default setting is for magnetic-north to be upwards, and autorotation set true if not specified otherwise.//​
 +
 ===== Preset ===== ===== Preset =====
  
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 ^Element ^Attribute ^Format ​ ^Comment | ^Element ^Attribute ^Format ​ ^Comment |
 |theme |default|string ​   |name of default theme | |theme |default|string ​   |name of default theme |
 +
 +===== Label =====
 +
 +Default SDD label to load if not specified in atc.xml
 +
 +
 +^Element ^Attribute ^Format ​ ^Comment |
 +|label |default|string ​   |name of default label |