[sumo-user] question about the "Subscribe" and "Subscribecontext"

[Jane Cheung <cheung180515@xxxxxxxxx>]

Dear all,

If I would like to get the occupancy for one lane area director E2 located on  known  lane What could I do?

The TRACI command would be useful to do that?  

If I could use TRACI   to do that, how to do I?

Is that command right below?

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Example from : SUMO_HOME/tests/complex/tutorial/traci_tls/data/

testlane=4i_0;

 traci.lane.subscribeContext(testlane,traci.constants.CMD_SUBSCRIBE_LANEAREA_CONTEXT );

    lane4i0ContextResults = traci.lanei.getContextSubscriptionResults('4i_0');

    occupancy4i0Handle1 = lane4i0ContextResults('0');

    occupancy4i0 = occupancy4i0Handle1(traci.CMD_GET_E2_VARIABLE.LAST_STEP_OCCUPANCY);  

Any kindly help would be appreciated!

Jane