Q1: yes. The length always corresponds to the length of the state string
for that junction.
Q2: yes.
Am Do., 11. Nov. 2021 um 22:43 Uhr schrieb Adrien Dubedat <
adrien.dube...@cae.com>:
> Thank you very much again for your time Jakob !
>
>
>
> I have probably what should be my last 2 questions about this subject.
>
>
>
> For example, with this junction ID “108103” :
>
>
>
> {
>
> "crosswalks_lanes_id": [
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> ":108103_w1_0",
>
> ":108103_w2_0",
>
> ":108103_w3_0",
>
> ":108103_w0_0"
>
> ],
>
> "crosswalks_link_fromLane": [
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "-4259614#1_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "102950257#4_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "320718063#10_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> "-102950257#7_1",
>
> ":108103_w1_0",
>
> ":108103_w2_0",
>
> ":108103_w3_0",
>
> ":108103_w0_0"
>
> ],
>
> "crosswalks_link_toLane": [
>
> "102950257#6_1",
>
> "-320718063#11_1",
>
> "-102950257#5_1",
>
> "4259614#0_1",
>
> "4259614#0_1",
>
> "102950257#6_1",
>
> "-320718063#11_1",
>
> "-102950257#5_1",
>
> "-102950257#5_1",
>
> "4259614#0_1",
>
> "102950257#6_1",
>
> "-320718063#11_1",
>
> "-320718063#11_1",
>
> "-102950257#5_1",
>
> "4259614#0_1",
>
> "102950257#6_1",
>
> ":108103_c0_0",
>
> ":108103_c1_0",
>
> ":108103_c2_0",
>
> ":108103_c3_0"
>
> ],
>
> "crosswalks_link_viaLane": [
>
> ":108103_0_0",
>
> ":108103_1_0",
>
> ":108103_2_0",
>
> ":108103_3_0",
>
> ":108103_4_0",
>
> ":108103_5_0",
>
> ":108103_6_0",
>
> ":108103_7_0",
>
> ":108103_8_0",
>
> ":108103_9_0",
>
> ":108103_10_0",
>
> ":108103_11_0",
>
> ":108103_12_0",
>
> ":108103_13_0",
>
> ":108103_14_0",
>
> ":108103_15_0",
>
> "",
>
> "",
>
> "",
>
> ""
>
> ],
>
> "junction_id": "108103"
>
> }
>
>
>
> It looks like that junction has a total (cars + pedestrians) of 20 lanes.
>
>
>
> Q1 – it seems the number of lanes (20) is the same for
> "crosswalks_lanes_id", "crosswalks_link_fromLane", "crosswalks_link_toLane"
> and "crosswalks_link_viaLane", the only difference being that some are
> empty strings for that last “category”. Does that mean it’s the same for
> all junctions ?
>
>
>
> Q2 – I retrieved the traffic light state for that junction and it gave me
> “rrrrgGggrrrrgGggrrrr” at some time, then “rrrrgGggrrrrgGggGrGr” later on.
>
> If I refer to your previous emails, should I understand that :
>
>
>
> - The state of crossing ":108103_c0_0” is the one I highlighted in
> yellow ?
> - The state of crossing ":108103_c1_0” is the one I highlighted in
> green ?
> - The state of crossing ":108103_c2_0” is the one I highlighted in
> blue ?
> - The state of crossing ":108103_c3_0” is the one I highlighted in
> purple ?
>
>
>
> Regards,
>
> Adrien
>
>
>
> *De :* sumo-dev <sumo-dev-boun...@eclipse.org> *De la part de* Jakob
> Erdmann
> *Envoyé :* Thursday, November 11, 2021 3:48 AM
> *À :* sumo developer discussions <sumo-dev@eclipse.org>
> *Objet :* Re: [sumo-dev] Retrieving the type of Junction
>
>
>
> In all "default" networks generated by netconvert, you only need to
> consider the state of the connection that targets a crossing.
>
> For this you must locate the index of the crossing within the list
> returned by trafficlight.getControlledLinks. (crossings will be at the end
> of the list).
>
> This index corresponds to the index within the 'state' string of the
> current phase and the state code (G/r) will describe both sides of the
> crossing.
>
>
>
> Caveat: It is possible two control both sides of a pedestrian crossing
> with different signal states. Contrary to my previous message, this will
> lead to controlled links of the form where the crossings is the fromLane:
>
> [[('EC_0', 'CW_0', ':C_0_0')], [('EC_1', 'CW_1', ':C_0_1')], [('WC_0',
> 'CE_0', ':C_2_0')], [('WC_1', 'CE_1', ':C_2_1')], [(':C_w2_0', ':C_c1_0',
> '')], *[(':C_c1_0', ':C_w0_0', '')]*, [(':C_w1_0', ':C_c2_0', '')],
> *[(':C_c2_0',
> ':C_w2_0', '')]*]
>
> However, you should not encounter this unless you explicitly define these
> special crossings by assigning their 'linkIndex2' attribute (
> https://sumo.dlr.de/docs/Networks/PlainXML.html#pedestrian_crossings
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FNetworks%2FPlainXML.html%23pedestrian_crossings&data=04%7C01%7Cadrien.dubedat%40cae.com%7C77b56ad56c3746fe1e4708d9a4f01383%7C006c1e48e34247e9ab5d0dd9ff89bd96%7C0%7C0%7C637722174799404450%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=kheWQo0H4rQ9pkYtpmlSsJtSW1c6aE48namPNx7jj5I%3D&reserved=0>
> )
>
>
>
> regards,
>
> Jakob
>
>
>
> Am Mi., 10. Nov. 2021 um 21:33 Uhr schrieb Adrien Dubedat <
> adrien.dube...@cae.com>:
>
> If I want to retrieve the signal state of each pedestrians crosswalk
> light, do I need to focus on anything else than the state of the
> <JUNCTIONID>_c<index>_0 IDs ?
>
>
>
> For example, for this junction :
>
>
>
> {
>
> "crosswalks_lanes_id": [
>
> "230506730#1_0",
>
> ":4350193651_w1_0"
>
> ],
>
> "crosswalks_link_fromLane": [
>
> "230506730#1_0",
>
> ":4350193651_w1_0"
>
> ],
>
> "crosswalks_link_toLane": [
>
> "332620704#2_0",
>
> ":4350193651_c0_0"
>
> ],
>
> "crosswalks_link_viaLane": [
>
> ":4350193651_0_0",
>
> ""
>
> ],
>
> "junction_id": "4350193651"
>
> }
>
>
>
> Do I only need to get the state of “:4350193651_c0_0” to get the state of
> that crosswalk light ?
>
>
>
> Regards,
>
> Adrien
>
>
>
> *De :* sumo-dev <sumo-dev-boun...@eclipse.org> *De la part de* Jakob
> Erdmann
> *Envoyé :* Wednesday, November 10, 2021 2:22 PM
> *À :* sumo developer discussions <sumo-dev@eclipse.org>
> *Objet :* Re: [sumo-dev] Retrieving the type of Junction
>
>
>
> Yes. The crossings will only show up as "toLane" IDs (even though both
> sides are controlled by a traffic light and can even have different signal
> states).
>
>
>
> Am Mi., 10. Nov. 2021 um 19:04 Uhr schrieb Adrien Dubedat <
> adrien.dube...@cae.com>:
>
> Hi Jakob,
>
>
>
> I’m now using a SUMO scenario that has pedestrians crosswalks.
>
>
>
> I’ve been able to extract a new JSON file in which I list the junction ID,
> the lanes ID and the links ID.
>
> The object I retrieve when calling getControlledLinks is a vector of
> TraCILink, on which I iterate to retrieve the elements “fromLane”, “toLane”
> and “viaLane”.
>
>
>
> From what I see, the crosswalks seem to be only listed in the “toLane”
> elements.
>
>
>
> Can I base myself only on “toLane” IDs then to map out the crosswalks of
> each junction ?
>
>
>
> Attached is the JSON file I extracted.
>
>
>
> Thank you for your help,
>
> Adrien
>
>
>
> *De :* sumo-dev <sumo-dev-boun...@eclipse.org> *De la part de* Jakob
> Erdmann
> *Envoyé :* Friday, November 5, 2021 3:31 AM
> *À :* sumo developer discussions <sumo-dev@eclipse.org>
> *Objet :* Re: [sumo-dev] Retrieving the type of Junction
>
>
>
> I'm guessing that your network doesn't have any crosswalks. See
> https://sumo.dlr.de/docs/Simulation/Pedestrians.html
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FSimulation%2FPedestrians.html&data=04%7C01%7Cadrien.dubedat%40cae.com%7C77b56ad56c3746fe1e4708d9a4f01383%7C006c1e48e34247e9ab5d0dd9ff89bd96%7C0%7C0%7C637722174799414411%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=bKw9cTlpmm25J6u7DML2LfrAPU4J16MGrsJTbz5Qjj0%3D&reserved=0>
> for how to get them.
>
> This is what a pedestrian-enabled network should look like:
> https://sumo.dlr.de/docs/Tutorials/TraCIPedCrossing.html
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FTutorials%2FTraCIPedCrossing.html&data=04%7C01%7Cadrien.dubedat%40cae.com%7C77b56ad56c3746fe1e4708d9a4f01383%7C006c1e48e34247e9ab5d0dd9ff89bd96%7C0%7C0%7C637722174799414411%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=RMVFLOGjDcbbysKGVXl6fNEhDyavJ6jgw%2BjPy40aZs0%3D&reserved=0>
>
>
>
> Am Do., 4. Nov. 2021 um 21:25 Uhr schrieb Adrien Dubedat <
> adrien.dube...@cae.com>:
>
> This a simple JSON file I created while running SUMO.
>
> In there, I write the traffic light ID and then the controlled lanes ID in
> that traffic light.
>
> However, I don’t see the format you were mentioning in your previous email.
>
>
>
> I also tried to go through the list of controlled links but it’s the same
> format.
>
> See the second file attached.
>
>
>
> I’m guessing this is because the naming convention in the osm.net.xml file
> might not be correct ?
>
>
>
> This is how a junction is defined in the osm.net.xml file:
>
>
>
> <junction id="10018180" type="dead_end" x="9550.31" y="6845.42"
> incLanes="260842179_0" intLanes="" shape="9549.40,6845.01 9551.22,6845.82"/>
>
>
>
> Thank you for your help,
>
> Adrien
>
>
>
> *De :* sumo-dev <sumo-dev-boun...@eclipse.org> *De la part de* Jakob
> Erdmann
> *Envoyé :* Wednesday, November 3, 2021 6:11 PM
> *À :* sumo developer discussions <sumo-dev@eclipse.org>
> *Objet :* Re: [sumo-dev] Retrieving the type of Junction
>
>
>
> You can use traci.trafficlight.getControlledLanes and getControlledLinks
>
> Lanes with ids of the form :<JUNCTIONID>_w<index>_0 are walkingareas
>
> Lanes with ids of the form :<JUNCTIONID>_c<index>_0 are crossings
>
>
>
> The index in the result lists corresponds to the index in the phase state.
>
>
>
> regards,
>
> Jakob
>
>
>
>
>
> Am Mi., 3. Nov. 2021 um 20:10 Uhr schrieb Adrien Dubedat <
> adrien.dube...@cae.com>:
>
> Hi Jakob,
>
>
>
> Thank you for your reply, I only just see it now because your emails were
> considered as spams by my company’s IT department …
>
>
>
> It looks like I’ve been able to extract those controlled junctions,
> perfect.
>
>
>
> I have another question. I’m interested in retrieving the state of the
> traffic lights associated to pedestrian crosswalks.
>
> In the documentation, it says that the crosswalks’ states are at the end
> of “state” string when calling “getRedYellowGreenState()”.
>
> Is there a way to know where do the pedestrian crosswalks start in that
> string ? Or is there a way to identify those crosswalks ?
>
>
>
> Thank you,
>
> Adrien
>
>
>
> *De :* sumo-dev <sumo-dev-boun...@eclipse.org> *De la part de* Jakob
> Erdmann
> *Envoyé :* Monday, November 1, 2021 3:04 PM
> *À :* sumo developer discussions <sumo-dev@eclipse.org>
> *Objet :* Re: [sumo-dev] Retrieving the type of Junction
>
>
>
> *ATTENTION :* Ce courriel provient de l’extérieur de l’organisation. Ne
> cliquez pas sur les liens ni sur les pièces jointes à moins que vous
> reconnaissiez l’expéditeur et que vous sachiez que le contenu est sûr.
> *CAUTION :* This email originated from outside the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.
>
> The junction type is currently not accessible via the TraCI API. (for
> static network analysis, the python library sumolib is recommended:
> https://sumo.dlr.de/docs/Tools/Sumolib.html
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FTools%2FSumolib.html&data=04%7C01%7Cadrien.dubedat%40cae.com%7C77b56ad56c3746fe1e4708d9a4f01383%7C006c1e48e34247e9ab5d0dd9ff89bd96%7C0%7C0%7C637722174799424360%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=DHZX4BHXxCe3z1Yrtqu38YaNwTtQ5z7VmbUPmst9Icg%3D&reserved=0>
> )
>
>
>
> If you only need to identify traffic light junctions, you can use the
> functions in TrafficLight.h to retrieve this information:
>
> - all traffic light controllers with getIDList
>
> - all junction ids controller by a given controller with
> getControlledJunctions
>
>
>
> regards,
>
> Jakob
>
>
>
> Am Mo., 1. Nov. 2021 um 18:16 Uhr schrieb Adrien Dubedat <
> adrien.dube...@cae.com>:
>
> Hi,
>
>
>
> I’m trying to retrieve the type of a Junction, I’m using the C++ library.
>
>
>
> In an osm.net.xml file which lists all junctions, I see there are some
> different node types (
> https://sumo.dlr.de/docs/Networks/PlainXML.html#node_types
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FNetworks%2FPlainXML.html%23node_types&data=04%7C01%7Cadrien.dubedat%40cae.com%7C77b56ad56c3746fe1e4708d9a4f01383%7C006c1e48e34247e9ab5d0dd9ff89bd96%7C0%7C0%7C637722174799424360%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=KBw0uldNkkUJKpnmqE5hOScDf%2BTGsV1xx%2FKad0ceHwo%3D&reserved=0>)
> :
>
>
>
> <junction id="101335548" type="traffic_light" x="9587.74" y="5049.51"
> incLanes="-770022998#1_0 480644124#1_0 690226256#9_0 -11661029#1_0"
> intLanes=":101335548_0_0 :101335548_1_0 :101335548_16_0 :101335548_17_0
> :101335548_4_0 :101335548_5_0 :101335548_18_0 :101335548_19_0
> :101335548_8_0 :101335548_9_0 :101335548_20_0 :101335548_21_0
> :101335548_12_0 :101335548_13_0 :101335548_22_0 :101335548_23_0"
> shape="9587.30,5041.43 9593.31,5043.64 9592.97,5045.85 9593.23,5046.73
> 9593.79,5047.47 9594.63,5048.06 9595.77,5048.51 9593.99,5054.65
> 9591.44,5054.42 9590.39,5054.75 9589.50,5055.38 9588.76,5056.31
> 9588.18,5057.54 9582.17,5055.32 9582.52,5053.10 9582.26,5052.21
> 9581.71,5051.46 9580.87,5050.85 9579.74,5050.39 9581.63,5044.27
> 9584.11,5044.53 9585.13,5044.20 9586.00,5043.58 9586.72,5042.65">
>
>
>
> I looked in the C++ classes / headers, mostly in “Junction” class, and I
> didn’t find anything related to that type, while we can get the Position or
> the Shape for example.
>
>
>
> Does anyone have an idea on how to get this data ?
>
>
>
> Thank you,
>
> Adrien
>
> _______________________________________________
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>
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>
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