Re: [Talk-transit] GTFS from OSM data?
Mike, I'm the developer of GO-Sync. Glad to hear that it's useful for you. Regarding the issue of building GTFS data from OSM, my mentors and I had a small discussion and we identified the following challenges: 1) routes and trips have a 1-to-many relationships. In other words, a route can have many different trips that visit different sequences of bus stops on that route, all dependent on different schedules. We can get a list of all the routes in the region by getting all relations with route=bus in the bounding box. However, given that OSM doesn’t have a clean way of storing schedules that would be required for creating trips.txt, we feel it’s better to store/generate this data outside of OSM. In other words, GO-Sync could be used to manage bus stops for stops.txt and routes for routes.txt and output this data to GTFS format, but trips.txt and shapes.txt would be significantly more difficult (because they are attributes of trips and schedules). ** ** 2) Shapes.txt file requires "shape_pt_sequence", which defines an ordering of stops within a trip. If I understand your question correctly, you want to represent this information in a ‘public_transport=stop_position’ tag on the route relation. I believe this would be possible, but you would still need to deal with the issues of schedules and trips as discussed in #1 above. ** ** Having stated the above challenges, we made the source code publicly available and we welcome any suggestions and contributions to the project. If you’re able to overcome the above challenges and create a tool based on GO-Sync that is useful to you and others, we’d be glad to review this tool for possible inclusion in the GO-Sync Google Code repository so it can be shared with others. ** ** You also might want to check out a recent webinar by the National RTAP on their GTFS Builder Tools: http://www.nationalrtap.org/Resources/VideoLibrary.aspx ** ** As well as the Transit Data Feeder project ( http://code.google.com/p/transitdatafeeder/), which is an effect to develop and maintain an application that provides a web-based interface for creating and maintaining GTFS feeds. ** ** Feel free to contact us if you have more questions. On Fri, Aug 26, 2011 at 9:05 AM, Mike N wrote: > I have looked at Go-Sync (Great tool!) and have some questions about public > transport and GTFS. I am starting from perhaps the reverse of normal case: > any agency data on routes and stops was way out of date and very incomplete. > The system is small and well within the scope of being surveyed from > scratch and entered into OSM. It appears that Go-Sync is focused on stop > synchronization, given the routes in routes.txt+trips.txt+shapes.**txt . > > 1. Are there any tools to create routes.txt + trips.txt + shapes.txt from > OSM public transport route relations? If not, would such a tool be within > the scope to add to Go-Sync, or should this just be a separate tool? > > 2. For bus routes, is there any value to adding > public_transport=stop_position to the OSM data, in addition to > highway=bus_stop? > > __**_ > Talk-transit mailing list > Talk-transit@openstreetmap.org > http://lists.openstreetmap.**org/listinfo/talk-transit<http://lists.openstreetmap.org/listinfo/talk-transit> > -- Khoa Tran ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
Re: [Talk-transit] [GTFS import] How to automatically add bus stops to relations?
Because the application will upload a large amount of data into OSM, I'd like to write some clear instructions first before put up the executable file (jar file in this case). Otherwise, the OSM server would have false data. Below is what the application generates: http://www.openstreetmap.org/edit?lat=28.05112&lon=-82.42484&zoom=17 <http://www.openstreetmap.org/edit?lat=28.05112&lon=-82.42484&zoom=17> I'll try my best to put up the executable file by the end of this week. But if you have your dataset before that, please post it cause I haven't tested the application well yet (only on 2 dataset). On Wed, Sep 8, 2010 at 1:27 PM, Michał Borsuk wrote: > > > On 8 September 2010 18:55, Khoa Tran wrote: > >> Hi Michal, >> We're developing an application to do just exactly what you want. We have >> successfully run a test on Hillsborough Area Regional Transit (HART) in >> Tampa, FL, USA. However, it's in a premature stage and need just a little >> bit more of the GUI. If you don't mind, you can post the link of your GTFS >> dataset and let us run a test on your dataset. We'll let you know the >> result. >> > > Unfortunately the dataset is larger than the licence, i.e. it contains > parts of other regions for which I have no permission to process and I don't > touch. I could possibly provide you the data once I'm finished processing > it, as I need to review stop names (it's done partially). > > One problem I've encountered so far: does your program accept data within > qoutation marks? Our bus stops contain commas in the names, which is a GTFS > requirement, but didn't go well with the "Public transport" plugin for JOSM. > > Otherwise, you can visit the application's website at >> http://code.google.com/p/gtfs-osm-sync/ . It's a java desktop application >> and there's no jar file available yet. But we'll put something up very soon >> with instructions on how to use the app. >> > > I've been to your website, but where's the executable? > > > -- > Best regards, mit freundlichen Grüssen, meilleurs sentiments, Pozdrowienia, > > > Michał Borsuk > > ___ > Talk-transit mailing list > Talk-transit@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-transit > > -- Khoa Tran ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
Re: [Talk-transit] [GTFS import] How to automatically add bus stops to relations?
Hi Michal, We're developing an application to do just exactly what you want. We have successfully run a test on Hillsborough Area Regional Transit (HART) in Tampa, FL, USA. However, it's in a premature stage and need just a little bit more of the GUI. If you don't mind, you can post the link of your GTFS dataset and let us run a test on your dataset. We'll let you know the result. Otherwise, you can visit the application's website at http://code.google.com/p/gtfs-osm-sync/ . It's a java desktop application and there's no jar file available yet. But we'll put something up very soon with instructions on how to use the app. On Wed, Sep 8, 2010 at 10:26 AM, Michał Borsuk wrote: > Hello. > > Thanks to Roland Olbricht's "Public Transport" plugin, I have successfully > merged existing bus stops with "my" GTFS data. There was a part of the work > that required manual human intervention, e.g. mapping existing bus stops to > the imported ones, but the second part, that is mapping bus stops (nodes) to > lines (relations) can be done automatically. > > Any ideas how to do it? > > > > -- > Best regards, mit freundlichen Grüssen, meilleurs sentiments, Pozdrowienia, > > > Michał Borsuk > > ___ > Talk-transit mailing list > Talk-transit@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-transit > > -- Khoa Tran ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
