Understood. Thanks Daniel, Patrick 2018-05-01 11:23 GMT-04:00 Daniel Patterson <[email protected]>:
> Hi Patrick, > > Train ways are typically tagged directly with `train=<something>`. Bus > routes are typically not tagged directly on a way itself (because busses > run on roads shared with other traffic), but rather, the way is a member of > a bus route relation. > > daniel > > On Tue, May 1, 2018 at 8:05 AM, Patrick Agin <[email protected]> > wrote: > >> I understand but my question was (sorry if it was unclear), why is it >> different between train and bus? >> >> 2018-05-01 10:02 GMT-04:00 Michal Palenik <[email protected]>: >> >>> On Tue, May 01, 2018 at 09:30:36AM -0400, Patrick Agin wrote: >>> > Thanks Michal and Daniel for your help, I defined my subway profile >>> and it >>> > works well. >>> > >>> > Michal, can I ask you why you use this kind of code for the train >>> profile: >>> > train = way:get_value_by_key('train'); >>> > if ( not data. train or data. train =='') then return false; >>> >>> this checks way's tags >>> >>> > >>> > and this kind of code for the bus: >>> > bus = get_from_rel(relations, way, "route", "bus", "route"); >>> > if ( not data.bus =='') then return false; >>> >>> this one checks relations' tags (of relations that the way is a member >>> of) >>> >>> > Aren't they defined the same way in osm data? >>> > Patrick >>> > >>> > 2018-04-30 13:26 GMT-04:00 Patrick Agin <[email protected]>: >>> > >>> > > Thanks again Michal I'll try it soon with subway instead of bus. Out >>> of >>> > > curiosity, why do you define highway in process_way function? It >>> does not >>> > > seem to be used elsewhere. >>> > > >>> > > 2018-04-30 13:03 GMT-04:00 Michal Palenik <[email protected] >>> >: >>> > > >>> > >> On Mon, Apr 30, 2018 at 12:57:42PM -0400, Patrick Agin wrote: >>> > >> > Thanks a lot to both of you. Michal, can I ask you two things: >>> > >> > what's the purpose of adding tram and train to excludable? >>> > >> >>> > >> generally to ignore trains when they do not have a common ticketing >>> > >> scheme. >>> > >> >>> > >> > and about get_from_rel(relations, way, "route", 'bus', "route") >>> line, is >>> > >> > 'bus' a reserved OSM word or is it defined by you? >>> > >> >>> > >> function get_from_rel(relations, way, "route", 'bus', "network") >>> > >> will find first/random relation of route=bus which the way is a >>> member >>> > >> of, and then returns tag "network". >>> > >> >>> > >> see also >>> > >> https://github.com/Project-OSRM/osrm-backend/issues/5032 >>> > >> >>> > >> > I ask the question >>> > >> > because I would like to manage subway routes. >>> > >> > Patrick >>> > >> > >>> > >> > 2018-04-30 12:48 GMT-04:00 Michal Palenik < >>> [email protected]>: >>> > >> > >>> > >> > > hi, I have it working >>> > >> > > https://github.com/FreemapSlovakia/freemap-routing/blob/ >>> > >> master/oma-bus.lua >>> > >> > > (and train profile below) >>> > >> > > >>> > >> > > michal >>> > >> > > >>> > >> > > On Mon, Apr 30, 2018 at 09:26:22AM -0700, Daniel Patterson >>> wrote: >>> > >> > > > Hi Patrick, >>> > >> > > > >>> > >> > > > Nobody has written a "How to make a public transport >>> profile" >>> > >> document >>> > >> > > > for OSRM, you'll have to piece it together from examples and >>> reading >>> > >> > > code. >>> > >> > > > >>> > >> > > > That said, the "testbot" profile here: >>> > >> > > > https://github.com/Project-OSRM/osrm-backend/blob/master/ >>> > >> > > profiles/testbot.lua >>> > >> > > > >>> > >> > > > is fairly simple. There are 3 functions: `process_node`, >>> > >> > > `process_way`, >>> > >> > > > and `process_turn`. The `process_way` function is run for >>> every >>> > >> way in >>> > >> > > the >>> > >> > > > OSM file you input, and it decides whether to include it in >>> the >>> > >> routing >>> > >> > > > graph (by setting properties on the `result` object), or to >>> exclude >>> > >> it >>> > >> > > (by >>> > >> > > > simply returning without doing any work). >>> > >> > > > >>> > >> > > > As someone else pointed out in another thread, the `car.lua` >>> > >> profile is >>> > >> > > > pretty complex - it's developed over time, and has a lot of >>> logic >>> > >> in it >>> > >> > > > that makes it hard to understand. I'd start with the testbot >>> > >> profile >>> > >> > > > above, and add the stuff you think you need. >>> > >> > > > >>> > >> > > > You might also want to take a look at >>> > >> > > > https://github.com/Project-OSRM/osrm-frontend/tree/gh-pages/ >>> debug >>> > >> which >>> > >> > > is >>> > >> > > > a web viewer that can show you what the routing graph looks >>> like. >>> > >> > > > >>> > >> > > > daniel >>> > >> > > > >>> > >> > > > On Mon, Apr 30, 2018 at 8:39 AM, Patrick Agin < >>> > >> [email protected]> >>> > >> > > > wrote: >>> > >> > > > >>> > >> > > > > Thanks again Daniel. Could you just give me an example >>> (with a >>> > >> snippet >>> > >> > > of >>> > >> > > > > code maybe) of a good implementation of point 1 (Lua >>> profile that >>> > >> only >>> > >> > > > > includes public transport ways in the graph). I just don't >>> have >>> > >> any >>> > >> > > clue >>> > >> > > > > about implementing this and I'm not aware of any docs that >>> could >>> > >> help >>> > >> > > me >>> > >> > > > > with that. >>> > >> > > > > Patrick >>> > >> > > > > >>> > >> > > > > 2018-04-30 11:30 GMT-04:00 Daniel Patterson < >>> [email protected]>: >>> > >> > > > > >>> > >> > > > >> Hi Patrick, >>> > >> > > > >> >>> > >> > > > >> This could be tricky, depending on how long the traces >>> you're >>> > >> > > trying to >>> > >> > > > >> match are. >>> > >> > > > >> >>> > >> > > > >> The OSRM Lua profiles basically act as a filter - they >>> decide >>> > >> which >>> > >> > > > >> ways from OSM are included in the routing graph, and assign >>> > >> > > properties to >>> > >> > > > >> edges in the graph. >>> > >> > > > >> >>> > >> > > > >> The map-matching algorithm will try to snap your >>> coordinate >>> > >> list to >>> > >> > > the >>> > >> > > > >> most likely path across the routing graph. >>> > >> > > > >> >>> > >> > > > >> In order to only snap to public transport paths, you'll >>> need: >>> > >> > > > >> >>> > >> > > > >> 1) A Lua profile that only includes public transport >>> ways in >>> > >> the >>> > >> > > > >> graph. >>> > >> > > > >> 2) A way to ensure that all the public transport paths >>> are >>> > >> > > connected >>> > >> > > > >> together (this could be difficult without including lots >>> of extra >>> > >> > > stuff you >>> > >> > > > >> don't want in the graph) >>> > >> > > > >> 3) GPS traces that are somewhat close to the actual >>> paths >>> > >> > > themselves, >>> > >> > > > >> as mapped in OSM >>> > >> > > > >> >>> > >> > > > >> (2) could be the really tricky bit here. If the public >>> > >> transport >>> > >> > > paths >>> > >> > > > >> are not connected, then any GPS trace you have that spans >>> two >>> > >> public >>> > >> > > > >> transport routes (say, a bus change, or a train change) >>> but those >>> > >> > > routes >>> > >> > > > >> aren't actually connected by the graph, will cause >>> problems with >>> > >> the >>> > >> > > > >> map-matching algorithm. >>> > >> > > > >> >>> > >> > > > >> daniel >>> > >> > > > >> >>> > >> > > > >> On Mon, Apr 30, 2018 at 7:23 AM, Patrick Agin < >>> > >> [email protected] >>> > >> > > > >>> > >> > > > >> wrote: >>> > >> > > > >> >>> > >> > > > >>> Hi everyone, >>> > >> > > > >>> I'm trying to define a profile to force match service to >>> take >>> > >> public >>> > >> > > > >>> transport routes only. I tried to add residential in >>> excludable >>> > >> so I >>> > >> > > can >>> > >> > > > >>> add exclude=residential at query time but it does not >>> change >>> > >> > > anything to >>> > >> > > > >>> the returned answer. Can someone help or point me towards >>> > >> > > documentation >>> > >> > > > >>> that could help (I've read profile.md but it does not >>> help me >>> > >> much). >>> > >> > > > >>> Thanks a lot, >>> > >> > > > >>> Patrick (newbie with osrm) >>> > >> > > > >>> >>> > >> > > > >>> _______________________________________________ >>> > >> > > > >>> OSRM-talk mailing list >>> > >> > > > >>> [email protected] >>> > >> > > > >>> https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> > > > >>> >>> > >> > > > >>> >>> > >> > > > >> >>> > >> > > > >> _______________________________________________ >>> > >> > > > >> OSRM-talk mailing list >>> > >> > > > >> [email protected] >>> > >> > > > >> https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> > > > >> >>> > >> > > > >> >>> > >> > > > > >>> > >> > > > > _______________________________________________ >>> > >> > > > > OSRM-talk mailing list >>> > >> > > > > [email protected] >>> > >> > > > > https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> > > > > >>> > >> > > > > >>> > >> > > >>> > >> > > > _______________________________________________ >>> > >> > > > OSRM-talk mailing list >>> > >> > > > [email protected] >>> > >> > > > https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> > > >>> > >> > > >>> > >> > > -- >>> > >> > > michal palenik >>> > >> > > www.freemap.sk >>> > >> > > www.oma.sk >>> > >> > > >>> > >> > > _______________________________________________ >>> > >> > > OSRM-talk mailing list >>> > >> > > [email protected] >>> > >> > > https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> > > >>> > >> >>> > >> > _______________________________________________ >>> > >> > OSRM-talk mailing list >>> > >> > [email protected] >>> > >> > https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> >>> > >> >>> > >> -- >>> > >> michal palenik >>> > >> www.freemap.sk >>> > >> www.oma.sk >>> > >> >>> > >> _______________________________________________ >>> > >> OSRM-talk mailing list >>> > >> [email protected] >>> > >> https://lists.openstreetmap.org/listinfo/osrm-talk >>> > >> >>> > > >>> > > >>> >>> > _______________________________________________ >>> > OSRM-talk mailing list >>> > [email protected] >>> > https://lists.openstreetmap.org/listinfo/osrm-talk >>> >>> >>> -- >>> michal palenik >>> www.freemap.sk >>> www.oma.sk >>> >>> _______________________________________________ >>> OSRM-talk mailing list >>> [email protected] >>> https://lists.openstreetmap.org/listinfo/osrm-talk >>> >> >> >> _______________________________________________ >> OSRM-talk mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/osrm-talk >> >> > > _______________________________________________ > OSRM-talk mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/osrm-talk > >
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