FlightGear has the ability to produce multiple files logging properties. Both the properties and the interval between the records are user selectable.
More than one log file can be configured in the PropertyList file setting up what properties to log.
Here is a simple example that logs the rudder and aileron positions to the file
steering.csv every second or so:
<?xml version="1.0" encoding="UTF-8"?> <PropertyList> <logging> <log> <filename>steering.csv</filename> <enabled>true</enabled> <interval-ms>1000</interval-ms> <delimiter>,</delimiter> <entry> <enabled>true</enabled> <title>Rudder</title> <property>/controls/rudder</property> </entry> <entry> <enabled>true</enabled><ref></ref> <title>Ailerons</title> <property>/controls/aileron</property> </entry> </log> </logging> </PropertyList>
Here is some sample output:
Time,Rudder,Ailerons 6522,0.000000,0.000000 7668,-0.000000,0.000000 8702,-0.000000,0.000000 9705,-0.000000,0.000000 10784,-0.000000,0.000000 11792,-0.000000,0.000000 12808,-0.000000,-0.210000 13826,-0.000000,-0.344000 14881,-0.000000,-0.066000 15901,-0.000000,-0.806000 16943,-0.000000,-0.936000 17965,-0.000000,-0.534000 19013,-0.000000,-0.294000 20044,-0.000000,0.270000 21090,-0.000000,-1.000000 22097,-0.000000,-0.168000
The easiest way for an end-user to define logs is to put the log configuration in an XML file (usually under the $FG_HOME directory), then refer to it using the --config option, like
This option can be passed via the command line or in the options settings of your favourite launcher.
- Generic protocol – Alternative and more flexible way to log or even stream data.
- JSBSim Logging - Alternative way to log if the aircraft is JSBSim based.