Simulation/Output/FCDOutput
The FCD (floating car data) export contains information about each vehicle where it is located in the network and the actual velocity.
Instantiating within the Simulation
The simulation is forced to generate this output using the option --fcd-output <FILE>. <FILE> is the name of the file the output will be written to. Any other file with this name will be overwritten, the destination folder must exist.
Generated Output
The generated XML file looks like this:
<fcd-export>
<timestep time="<TIME_STEP>">
<vehicle id="<VEHICLE_ID>" x="<VEHICLE_POS_X>" y="<VEHICLE_POS_Y>" angle="<VEHICLE_ANGLE>" type="<VEHICLE_TYPE>"
speed="<VEHICLE_SPEED>"/>
... more vehicles ...
</timestep>
... next timestep ...
</fcd-export>
| Name | Type | Description |
|---|---|---|
| time_step | (simulation) seconds | The time step described by the values within this timestep-element |
| id | id | The id of the vehicle |
| type | id | The name of the vehicle type |
| speed | m/s | The speed of the vehicle |
| angle | degree | The angle of the vehicle |
| pos_x | --- | The absolut X coordinate of the vehicle. The value depends on the given geographic projection |
| pos_y | --- | The absolut Y coordinate of the vehicle. The value depends on the given geographic projection |
When the option --fcd-output.geo is set, the written (x,y)-coordinates will be the lon/lat geo-coordiantes.
NOTES
In combination with the given geometry of the vehicles (shapes) you can build some nice animations, e.g Nasa WorldWind or Google Earth.
This page was last modified on 15 November 2012, at 09:02.