Re: [OSRM-talk] OSRM does not use date restrictions in conditional access?
michael spreng wrote: > It currently does not. There is an update cycle of about 4 days. I think > such date ranges would make sense to use at the time of generation > (however day time ranges would still be ignored). But that is not yet > implemented as far as I know. It could be implemented in the lua > profile, so probably no deeper knowledge of osrm is necessary to > implement this. Implementing a full opening hours parser in Lua is probably not trivial though ;) There is actually a C++ OpeningHours class in OSRM, which is used for parsing conditional turn restrictions. It's not fully featured but might be enough. It could be given a Lua binding, I guess, to avoid duplication. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] OSRM Problems
> Item #1. > > If I go here: > http://project-osrm.org/ > and click on "View Demo", and put in 2 points > the route is not calculated and the GPX export > button is not active (it is grayed out). This > used to work. What happened? The OSRM demo server no longer has a TLS certificate and so any attempts to access it via HTTPS, which the demo UI tries to do, will fail. See https://github.com/Project-OSRM/osrm-backend/issues/5655 . OSRM is essentially abandonware at this point. Great piece of software that it is, I would only suggest building anything on it if (a) you are happy with its current functionality or (b) you are prepared to maintain it (or a fork) yourself. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Bicycle routing, crossing large roads: how to get information on the roads crossed
Jeroen Hook wrote: > Is there another way to find out what type of road(s) I am crossing? I think the easiest solution would be to allow bicycles on your highway=primary, but set it to be a restricted access road (or just to have a really high cost). That way you’d still call process_turn, but in reality the primary road wouldn't be used for routing. My private cycle.travel fork does something like this in its equivalent of process_turn (e.g. https://cycle.travel/map?from=51.7546,-1.2612=51.7554,-1.2616), though it’s a (pretty extensive) fork of 4.9.x so not directly comparable. Alternatively, you could do some preprocessing to mark intersections, depending on the size of your source data. For a different project I wrote https://github.com/systemed/intersector which identifies junctions in an .osm.pbf. If you were to patch it to output node IDs, then look up those node IDs in process_node, you could assign crossing penalties that way. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
[OSRM-talk] Visualising the hierarchy
Hi all, Is it in theory possible to take OSRM's CH graph and visualise, say, the "top 10%" of routes? In other words, I'm interested in creating a map which shows the highest order of contractions - the routes which are most likely to be followed. Obviously I'll have to write some code, but would appreciate a few general pointers. cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] OSRM v5.16.0 Release
Chau Nguyen wrote: ### Maneuver Override Relations: Sometimes road geometries of complicated intersections do not give enough information on how a suitable guidance should look like. OSRM is now supporting the `maneuver override` tag in OSM to detect such intersections and choose better guidance. Read more about the `maneuver override` tag here: https://github.com/Project-OSRM/osrm-backend/wiki/Maneuver-override-tag Looks great! The lingua franca of OSM is British English, though, so that should probably be "manoeuvre". http://grammarist.com/spelling/maneuver-manoeuvre/ cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Eliminating, or reconstructing, via points
Patrick Niklaus wrote: My solution for that would remove vias if the way through them is a shortest (duration) path. Technically shortest paths are not unique (think of grid cities). So this might lead to some route modifications that don't change the duration of the route but maybe the actual path. The way to implement this would be by doing a table query with the vias and removing via j from (i, j, k) if result.durations[i][j] + result.durations[j][k] == result.durations[i][k]. For 2. the implementation would be pretty straight forward. Using the match plugin first obtain snapped via coordinates of the trace. Then apply 1. to minimize the via points. Brilliant - thank you. Really good ideas and probably much simpler and faster than I'd have managed. :) I think the non-unique shortest path is unlikely to be an issue - most of the routes planned with cycle.travel are rural touring routes on winding roads, rather than in grid cities. Will have a go and report back! cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
[OSRM-talk] Eliminating, or reconstructing, via points
Two similar via-points-related questions I'd like to hear people's opinions on. I realise that out-of-the-box OSRM might not be able to solve these efficiently, but I'd be interested to hear ideas how one might build a plugin (or other code) to solve these. 1. Sometimes users of cycle.travel plan routes with a _lot_ of via points, e.g. http://cycle.travel/map/journey/19429 . Often, many of these via points are unnecessary: for example, the route from 'via 13' to 'via 15' would pass through 'via 14' anyway. I'd like to add an option to eliminate these unnecessary points. I could do a fairly naive implementation, repeatedly routing between each pair and eliminating those which aren't necessary, but wonder if there's a smarter way of doing it. 2. Often people ask for a way to upload routes (e.g. in GPX or KML format, perhaps created with another routing website). This would be cool if the resulting routes were editable. In other words, for a given polyline, reconstruct the via points necessary for (an approximation of) that polyline. Strava built something like this the other year: https://twitter.com/paulmach/status/668921393656954880 . I can't get it to work, but the "divide and conquer" principle I guess is basically analogous to Douglas-Peucker: find a route from (start) to (end), find the polyline point furthest from the generated route, add a via there, and repeat until no points are more than n metres from the route. Again, I could probably hack a naive implementation together, but wonder if there's a smarter way to do it! Any ideas welcome. These could be fun challenges but I'd just like to get some second opinions before embarking on them... cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] OSRM-talk Digest, Vol 37, Issue 8
Artur Bialecki wrote: I would like to use OSRM with bus routes. Basically I only want to extract and route against nodes and ways that belong to relation route=bus|tram|trolleybus OSRM doesn't currently support route relations. You can either 'paint' ways that are members of relations with a special tag in a pre-processing step (how to do this is left as an exercise to the reader :) but look at Osmosis), or use Emil Tin's very old fork of OSRM with relation support. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] public transport routing
Daniel J H wrote: If you want to implement the transit routing yourself, a solid start is Connection Scan --- "Intriguingly Simple and Fast Transit Routing" quite easy to implement but also has its limitations. Not sure whether it's de rigeur to mention Mapzen on the mailing list of a Mapbox-supported project ;), but they're doing some interesting work with public transport routing: https://transit.land/ https://mapzen.com/blog/valhalla-intro It's some way off primetime yet, I think, but really cool to see people working in this space. And of course there's always OpenTripPlanner - http://www.opentripplanner.org/ cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Use another data source than OSM
Patrick Niklaus wrote: I think cycle.travel runs on data from Ordnance Survy. So it is absolutely doable, but I don't think you will find any importers (targeting OSRM) for commercial data sources as OpenSource. (most providers require you to sign a NDA before you are allowed to even look at the documentation...). cycle.travel runs on OSM data, but it's augmented with supplementary data from Ordnance Survey and other sources. I use a little homegrown tool to add extra tags to the ways in the OSM .pbf: https://github.com/systemed/tagmangle Romain - I'd suggest you start by creating a small .osm file with an extract of your converted data (say, a town or county) and running OSRM over that. As Patrick says, there are a few gotchas with connectivity and tags. Once you're happy with that, you can rewrite your tool to create a .pbf. cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Issue with chosing a sub-optimal route
Rudolf Mayer wrote: Ideal should be http://osrm.at/atu, which however gets a slower time computed - and I don't really understand why... - Both ways have the same speed limit (ro:Urban) - The second option is shorter The trunk road (219294960) has smoothness=very_bad set on it. This will cause a slower speed to be assumed. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Beginner question: default car profile and tracktype/smoothness/surface
Michal Palenik wrote: On Mon, Mar 17, 2014 at 01:57:23PM -0300, Fernando Trebien wrote: But I don't think we can easily implement different interpretations of the tags on a per-country basis. in postgis/anyspatialdatabase, this would be fairly easy (except for filling in the data by crowdsourcing). looking at https://github.com/DennisOSRM/Project-OSRM/blob/master/profiles/examples/postgis.lua it is probably connectable. Yes, it's very easy for a Lua profile to interpret tags differently on a per-country basis, or even more granular than that - for example, my profile at cycle.travel/map interprets tags slightly differently depending whether the way is in a large built-up area or in the countryside. Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Time-to-destination on OSRM is too short
Spod OSM wrote: Looking at the OSM data, it does look as if there is missing maxspeed data on some of the roads involved (but the maxspeed on the major length of motorway is correctly tagged), but presumably OSRM uses sensible scaled down defaults, relative to the way type, in that case? Any suggestions as to how to help to get the public OSRM server to give more realistic times? Bear in mind that highway=trunk roads in the UK are often of a lower quality than those in the rest of the world. OSRM's standard car profile assumes 85km/h for a trunk road. This is not too far off (say) the A1, A14 or A303 in Britain, but evidently not appropriate for the A61. However, you can't just apply sensible scaled down defaults to fix the A61. That would break the parts of the world which have faster trunk roads, including the A1 etc. The correct solution is to add maxspeed tags, traffic lights etc. cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
Re: [OSRM-talk] Time-to-destination on OSRM is too short
Martin Koppenhoefer wrote: Generally it seems that different ideas in different areas of the world, of what a trunk road is supposed to be, now fall onto our feet ;-) One option that comes to my mind would be that you change the road classification in Britain to use trunk only on those ways where it is used in other parts of the world, regardless of the actual official british classification. Could this find support in the British community? Quick answer: not a chance in hell of that finding support. Long answer: I don't really see the need, to be honest. All road types have to be interpreted with national defaults in mind for speed limits, permitted access, what side you drive on, etc. The fact that UK trunk roads are (on average) slower is just another one of these. And although UK trunk roads might be slower than German ones, they're probably faster than many of these: http://osm.org/go/wEupZG-- cheers Richard ___ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk
