Differences

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--- ivac2:firdef_config_fir [2017/09/02 17:48]
ian.beswick [North]
+++ ivac2:firdef_config_fir [2017/09/02 19:40] (current)
ian.beswick [Theme]
@@ Line 68: / Line 68: @@
 ^Element ^Attribute ^Format  ^Comment |
-|north     |value|string|"mag" or "true"|
+|north|value|string|"mag" or "true"|
-| |autorotate|boolean|"true" or "false"|
+|north |autorotate|boolean|"true" or "false"|
-Allows FIR-wide choice between magnetic-north upwards or true-north upwards; due to map projections from polar to flat, the north upwards will apply at the preset.
+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.
-//The default setting is for magnetic-north to be upwards if not specified otherwise.//
+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 =====
@@ Line 91: / Line 96: @@
 ^Element ^Attribute ^Format  ^Comment |
 |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 |