Is there any way to select some of values for SUMO to write to the output file

Question

I would like to generate the FullOutput file in SUMO, but in https://sumo.dlr.de/docs/Simulation/Output/FullOutput.html we can see that, FullOutput file seems like that:

<full-export>
    <data timestep="<TIME_STEP>">

    <vehicles>
        <vehicle id="<VEHICLE_ID>" eclass="<VEHICLE_ECLASS>" co2="<VEHICLE_CO2>" co="<VEHICLE_CO>" hc="<VEHICLE_HC>"
        nox="<VEHICLE_NOX>" pmx="<VEHICLE_PMX>" fuel="<VEHICLE_FUEL>" electricity="<VEHICLE_ELECTRICITY>" noise="<VEHICLE_NOISE>" route="<VEHICLE_ROUTE>" type="<VEHICLE_TYPE>"
        waiting="<VEHICLE_WAITING>" lane="<VEHICLE_LANE>" pos_lane="<VEHICLE_POS_LANE>" speed="<VEHICLE_SPEED>"
        angle="<VEHICLE_ANGLE>" x="<VEHICLE_POS_X>" y="<VEHICLE_POS_Y>"/>

        ... more vehicles ...

    </vehicles>

    <edges>

        <edge id="<EDGE_ID>" traveltime="<EDGE_TRAVELTIME>">

        <lane id="<LANE_ID>" co="<LANE_CO>" co2="<LANE_CO2>" nox="<LANE_NOX>" pmx="<LANE_CO>"
        hc="<LANE_HC>" noise="<LANE_NOISE>" fuel="<LANE_FUEL>" electricity="<LANE_ELECTRICITY>" maxspeed="<LANE_MAXSPEED>" meanspeed="<LANE_MEANSPEED>"
        occupancy="<LANE_OCCUPANCY>" vehicle_count="<LANE_VEHICLES_COUNT>"/>

            ... more lanes of the edge if exists

        </edge>

            ... more edges of the network

    </edges>

    <tls>
        <trafficlight id="0/0" state="GgGr"/>
        ... more traffic lights

    </tls>

</data>

... the next timestep ...

</full-export>

The outputed .xml file is too big, usually more than 1GB, and it contains a lot of values, such as

eclass="<VEHICLE_ECLASS>" co2="<VEHICLE_CO2>" co="<VEHICLE_CO>" hc="<VEHICLE_HC>"
        nox="<VEHICLE_NOX>" pmx="<VEHICLE_PMX>" fuel="<VEHICLE_FUEL>"

which I don't need.

So I wonder, is there any way to select some of values I need to output?

score 0 · Answer 1 · answered Nov 21 '21 at 18:10

You have different options here:

Use a different output. Maybe fcd-output is already enough. It contains all the vehicle positions and you can usually aggregate it yourself to edges if you want to. Furthermore fcd-output can also be given a list of attributes to write using --fcd-output.attributes (full-output does not have this feature).
Filter the output directly. Instead of giving an output file you can give a socket connection and sumo will direct the output there. See https://github.com/eclipse/sumo/blob/main/tests/complex/sumo/socketout/runner.py for an example.
If you are on Linux use a named pipe Example of using named pipes in Linux shell (Bash) and filter yourself
Redirect the output to the xml2csv.py script which removes at least the XML overhead and it may be easier to remove columns in a csv files depending on your setup.

Is there any way to select some of values for SUMO to write to the output file

1 Answers1