Thank you, Jakob

Could you please explain this point option --yfactor 60 causes all y values
to be scaled by 60.

On Tue, Feb 15, 2022, 9:19 PM Jakob Erdmann <[email protected]> wrote:

> 1. option --yfactor 60 causes all y values to be scaled by 60
> 2. The latest development version supports filtering of edges as well as
> aggregation. See attributes 'edges', 'edgesFile' and 'aggregate' at
> https://sumo.dlr.de/docs/Simulation/Output/Lane-_or_Edge-based_Traffic_Measures.html.
> You can obtain that version at
> https://sumo.dlr.de/docs/Downloads.php#sumo_-_latest_development_version
> 3. leave out option --scatterplot
> 4. -i selects the attribute that controls grouping of points (same color,
> line graph lines). In this case grouping is by edge attribute 'id'. -s is
> short for --show which shows the plot intead of only writing it to a file
> 5. yes. I'd expect a positive correlation.
>
> regards,
> Jakob
>
> Am Di., 15. Feb. 2022 um 16:56 Uhr schrieb Sumbal Malik <
> [email protected]>:
>
>> Jakob, many thanks for your prompt response.
>>
>> I calculated the aggregated edge data using <edgeData id="dump_15"
>> freq="30" file="edge_data.xml" excludeEmpty="true"/> and then used this
>> command to "\visualization>plotXMLAttributes.py edge_data.xml -i id -x
>> density -y timeLoss -s --scatterplot --legend --yfactor 60 --ylabel
>> TimeLoss" to plot the attached graph of density versus time loss.
>>
>> I would be thankful if you could answer the following queries:
>>
>> 1. Why the value of time loss is too large (1000) on the graph when the
>> maximum value of time loss is 15 in the attached edgedata output file.
>> 2. Can we aggregate the values of all the edges and plot them or how can
>> we get the output of selective edges?
>> 3. How can we draw a line graph using plotXMLAttributes.py
>> 4. What do "-i id" and "-s" represent in the above command.
>> 5. Does it make sense if we draw a relation between the density and the
>> time loss.
>>
>> Thank you
>>
>> On Tue, 15 Feb 2022 at 10:41, Jakob Erdmann <[email protected]>
>> wrote:
>>
>>> 1. TraCI is not tailored for measuring aggregated data. I recommend
>>> doing this with XML outputs (i.e
>>> https://sumo.dlr.de/docs/Simulation/Output/Lane-_or_Edge-based_Traffic_Measures.html).
>>> However, you can compute traffic statistics "manually":
>>> - retrieve the speed or timeLoss of all vehicles in every step
>>> - compute vehicle density (lane.getLastStepVehicleNumber /
>>> lane.getLength)
>>> 2. you could run simulations with and without your special delay-causing
>>> vehicle and observe the difference
>>>
>>>
>>> Am Mo., 14. Feb. 2022 um 14:24 Uhr schrieb Sumbal Malik <
>>> [email protected]>:
>>>
>>>> Dear SUMO Team
>>>>
>>>> 1. How can we calculate/measure the traffic/road efficiency using traci
>>>> SUMO
>>>> 2. Can we draw a relationship between the delay caused by an individual
>>>> vehicle and traffic efficiency of the road segment.
>>>>
>>>> Thank you
>>>>
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