"2. period denotes the time period that was aggregated. *By default it's the whole simulation time* but you can change it with attribute 'freq'"
In your case, the aggregation period is 3600. It's always the same for all edges. Am Di., 21. Dez. 2021 um 18:41 Uhr schrieb Royal Bhandari < [email protected]>: > Thanks for the reply. However, I am still confused with the period > attribute. > > In my case, (start time=0 sec, end time = 3600 sec), and I haven't > specified any intervals. What would be the value of the period? And will be > the value of period be the same or different for various edges of the same > network? > > > > > On Tue, Dec 21, 2021 at 1:56 AM Jakob Erdmann <[email protected]> > wrote: > >> 1. at any given moment there is a total number of vehicles on an edge and >> this number varies over time. edgeData is a time-aggregate so you only get >> the average number of vehicles on the edge per second (computed as >> sampledSeconds / period). >> 2. period denotes the time period that was aggregated. By default it's >> the whole simulation time but you can change it with attribute 'freq' >> 3. based on edgeData alone you cannot get an unbiased aggregate since >> vehicles may briefly occupy two edges at the same time and are thus counted >> twice when summing edgeData. You can eithe accept this bias or do you own >> aggregation based on unaggregated data (i.e. fcd-output). >> >> Am Di., 21. Dez. 2021 um 00:51 Uhr schrieb Royal Bhandari < >> [email protected]>: >> >>> Hello, >>> >>> I have several questions regarding edge-based traffic measures: >>> >>> - What is the difference between the total number of vehicles on an >>> edge and the average number of vehicles on an edge? (is av num of vehicle >>> in an edge = num of vehicles in a particular edge/no of edges, >>> irrespective of the length of each particular edge?) >>> - What is the value of the period in the attached figure if I simply >>> have a single simulation with begin time = 0 and end time = 3600? >>> - It is mentioned that "Spatial aggregation (over multiple edges or >>> lanes) is not as easy". However, the process of doing this is not given. >>> Please direct me to this. >>> >>> >>> >>> >>> >>> [image: image.png] >>> >>> >>> >>> >>> >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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