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SA: route planner

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  • M Offline
    MdzOtt
    last edited by 3 Aug 2023, 03:40

    There are some unroutable segments out there and this has nothing to do with difficulty or danger. Some places in OpenStreet Map just can’t get routed through. There is a bike/pedestrian bridge over a highway where i live (and ride) and you just can’t do a route through it. I tried to check the OpenStreet map and edit it, but that segment has the correct attributes. Btw. it does not work for creating routes in SA, but also in Strava.

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    • T Offline
      trailcafe Bronze Member
      last edited by 3 Aug 2023, 06:04

      plotaroute.com is also based on OSM maps and routes anything without issues. Same for the Footpath app. Can someone explain, why there are differences in routing? For me it seems, that SA fails and the others can manage route creation in a better way. But I cannot explain it to me why this is the case.

      f5cf89d4-0342-4ab8-99e6-d8b0f5f27cba-image.png

      ? M 2 Replies Last reply 3 Aug 2023, 06:40 Reply Quote 0
      • ? Offline
        A Former User @trailcafe
        last edited by 3 Aug 2023, 06:40

        @trailcafe Indeed! yesterday i took some time to plan well known routes with SA and twice i ran into the same problem. komoot however worked without any problems. it is a pity for SA, just hope they will address this issue in the future

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        • M Offline
          Mff73 @trailcafe
          last edited by Mff73 8 Mar 2023, 07:20 3 Aug 2023, 07:19

          @trailcafe
          OSM is the source of data : points, path, tracks, etc… are created there, with attributes.
          Then, there are map generations using these source of data, and each map generator (OSM itself for itself, or mapbox for others, or openandromap, etc…) are taking attributes and filter, tweak, to display the way they want/can.
          Then it comes to routing, where same OSM data source is used by routing engines to follow what can be followed using routing profiles (sometimes one can see routed path on a “path” not displayed on the map itself 😉 )

          Something in OSM not routable “at all”, and no routing engine will go through this.
          But something routable, according to some profile criteria can be walked through but not cycle, etc…, and finally (maybe not complete explanation, just my own understanding) which optimisation or path choosing when multiple are possible, it is the magic inside each routing profiles/engines i think.

          Then SA/Komoot/etc use all OSM raw data, have potentially their own mapping “provider”/“sources”, and also their “own” routing engine/profiles.

          It may just explain the differences, not why SA is not the best at routing (according to users).

          Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
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          Wife : S9PP
          SA: Always the latest beta :)
          Android 13, Galaxy S205G

          T 1 Reply Last reply 3 Aug 2023, 07:35 Reply Quote 1
          • T Offline
            trailcafe Bronze Member @Mff73
            last edited by 3 Aug 2023, 07:35

            @Mff73 thank you very much. When I get it right, SA could improve its mapping because it’s using “its own” routing engine that could be tweaked to e.g. route all visible paths (or any other criteria).

            I 1 Reply Last reply 3 Aug 2023, 07:36 Reply Quote 0
            • I Online
              isazi Moderator @trailcafe
              last edited by 3 Aug 2023, 07:36

              @trailcafe not sure Suunto App is using its own routing, I believe they use the mapbox API.

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              • T Offline
                trailcafe Bronze Member
                last edited by 3 Aug 2023, 07:53

                I just went into OSM and checked the metadata of some paths:

                1. and 2. picture is correctly routed by SA, 3. picture shows the path that SA ignores. I can’t see any differences in classification
                  Link to area: https://www.openstreetmap.org/edit?editor=id#map=17/47.57343/11.21559

                Bildschirmfoto 2023-08-03 um 09.48.31.png

                Bildschirmfoto 2023-08-03 um 09.49.38.png

                Bildschirmfoto 2023-08-03 um 09.49.49.png

                The Mapbox API does not have any high sophisticated settings
                b765a7c4-dcce-4203-ada2-7da01a7cbdbd-image.png
                https://docs.mapbox.com/api/navigation/directions/

                M 1 Reply Last reply 3 Aug 2023, 11:28 Reply Quote 0
                • M Offline
                  Mff73 @trailcafe
                  last edited by 3 Aug 2023, 11:28

                  @trailcafe
                  Sometimes it is not the path itself which is faulty, but its non proper connexion with other paths. Just one point not linked and the path, properly setup, is a dead-end, and routing will avoid it.

                  Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                  Suunto Vertical all black
                  Wife : S9PP
                  SA: Always the latest beta :)
                  Android 13, Galaxy S205G

                  T 1 Reply Last reply 3 Aug 2023, 11:39 Reply Quote 0
                  • T Offline
                    trailcafe Bronze Member @Mff73
                    last edited by 3 Aug 2023, 11:39

                    @Mff73 Yes, and that is also understandable. But that does not apply here in this example.

                    M 1 Reply Last reply 3 Aug 2023, 12:04 Reply Quote 0
                    • M Offline
                      Mff73 @trailcafe
                      last edited by 3 Aug 2023, 12:04

                      @trailcafe
                      strange, yes.
                      This path 3 is routable in other tools (with locus and brouter)

                      Just one thinking : this path 3 is connected to its both end to a path which is quoted “alpine hiking”
                      here
                      effee32f-db83-487f-b12e-463ecea8fa45-image.png

                      and here
                      bde8d0a3-c0a6-4534-8d01-7878863736d2-image.png

                      so, if SA refuse to route Alpine Hiking paths (hypothesis), then this path 3 is never reachable in SA routing.
                      But indeed little strange 🤔

                      Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                      Suunto Vertical all black
                      Wife : S9PP
                      SA: Always the latest beta :)
                      Android 13, Galaxy S205G

                      T 1 Reply Last reply 3 Aug 2023, 13:02 Reply Quote 1
                      • T Offline
                        trailcafe Bronze Member @Mff73
                        last edited by 3 Aug 2023, 13:02

                        @Mff73 Damn, I’ve overseen that little part. Changed it to T3 which is still ok for classification. Environment changed and it got easier in this small part.

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