thanks - I was still at the LUA stage (and quite a bit can be worked out from just this level).
The explanation below explains 0 and 1, but I couldn't see any explanation of the other values - despite some c++ code that set default TravelMode values of 4 in a couple of places. No documentation in TravelMode.hpp???? The lack of documentation is an issue, and I was planning to write a few notes about the LUA profiles for others on my blog. They're bound to be incomplete, but they would be a start and could be updated/corrected as a living document. Richard On Nov 11, 2015, at 6:50 PM, Daniel Hofmann <hofm...@mapbox.com> wrote: > Let me show you how you can find out more about specific variables like > mode_ferry: > > your best bet is to search the code base, for example, see this initial > search for mode_ferry: > > https://github.com/Project-OSRM/osrm-backend/search?utf8=%E2%9C%93&q=mode_ferry&type=Code > > you can see how we set result.forward_mode and result.backward_mode to > mode_ferry there, so let's search for forward_mode: > > https://github.com/Project-OSRM/osrm-backend/search?utf8=%E2%9C%93&q=forward_mode&type=Code > > this gives us some lua profiles, which we ignore, since we want to see how > the OSRM implementation uses forward_mode and backward_mode; the last search > hit is scripting_environment.cpp: > > https://github.com/Project-OSRM/osrm-backend/blob/8f6fc0146ba76d34d20c5b7a87b75249bbb12b82/extractor/scripting_environment.cpp#L121-L124 > > this is where we expose the ExtractionWay's set_forward_mode and > set_backward_mode member functions, aliasing them to the lua properties > forward_mode and backward_mode --- so let's go on searching for the > ExtractionWay type: > > https://github.com/Project-OSRM/osrm-backend/blob/8f6fc0146ba76d34d20c5b7a87b75249bbb12b82/extractor/extraction_way.hpp#L112-L115 > > in those member functions, the forward_travel_mode and backward_travel_mode > are set accordingly. If you check their types a few lines below in the member > attribute declarations, you will see they are of type TravelMode. And here it > is: > > https://github.com/Project-OSRM/osrm-backend/blob/8f6fc0146ba76d34d20c5b7a87b75249bbb12b82/data_structures/travel_mode.hpp#L34-L35 > > a quick search for TRAVEL_MODE_INACCESSIBLE reveals the following line in the > extractor: > > https://github.com/Project-OSRM/osrm-backend/blob/9ef1f8cba31ec8323b357d233f1c552b1c7c9e09/extractor/extractor_callbacks.cpp#L95-L99 > > where ways are discarded, if they are inaccessible! Tada! > > > As you can see, even though it is quite a bit of effort tracing back specific > variables, it can be done in a few minutes with only the most basic tools (I > did this entirely using the Github search functionality --- of course you can > use grep or your code browser of choice, too). > > Hope that helps, > Daniel J H > > On Wed, Nov 11, 2015 at 7:06 PM, Richard Marsden <winw...@gmail.com> wrote: > By coincidence I was working through the lua scripts trying to understand > them. > > So what is the significance of the 1,2,3? Just unique identifiers. As long > as they're non-zero, they will be enabled? > > Richard > > > On Nov 11, 2015, at 9:23 AM, Daniel Hofmann <hofm...@mapbox.com> wrote: > >> If you take a look at the car profile, you will see a ferry_mode variable, >> that sets the travel mode: >> >> https://github.com/Project-OSRM/osrm-backend/blob/8f6fc0146ba76d34d20c5b7a87b75249bbb12b82/profiles/car.lua#L151 >> >> If you set this to 0 (i.e. 'inaccessible") as defined here: >> >> https://github.com/Project-OSRM/osrm-backend/blob/8f6fc0146ba76d34d20c5b7a87b75249bbb12b82/data_structures/travel_mode.hpp#L34-L35 >> >> then the extractor discards ferry routes because you marked them >> inaccessible. >> >> On Wed, Nov 11, 2015 at 9:03 AM, Peter Becker <floyd....@gmail.com> wrote: >> Hello, i dont want any ferries in my routes. Is this possible? >> >> _______________________________________________ >> OSRM-talk mailing list >> OSRM-talk@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/osrm-talk >> >> _______________________________________________ >> OSRM-talk mailing list >> OSRM-talk@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/osrm-talk > > _______________________________________________ > OSRM-talk mailing list > OSRM-talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/osrm-talk > > > _______________________________________________ > OSRM-talk mailing list > OSRM-talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/osrm-talk
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