Difference in distance when using route and table #5151
Description
Hi,
I'm playing a bit with the table service and the distance it can now return (thanks for that, it is awesome!).
I noticed that there exists pairs of coordinates that are such that the distance returned by the table service is different that the one returned by the route service although the durations are the same.
As an example, I took the Lyon map (http://download.bbbike.org/osm/bbbike/Lyon/), and ran the following two queries on a local instance:
curl "http://localhost:5051/route/v1/driving/4.827889,45.759704;4.842888,45.755310"
curl "http://localhost:5051/table/v1/driving/4.827889,45.759704;4.842888,45.755310?sources=0&destinations=1&annotations=distance,duration"
What I get are the following two:
{"code":"Ok","routes":[{"geometry":"emhvGi}m\\`A}Ej@mAVD~FtGnBgInCeVh@k@~AoKQa@aGcD[?lFkW|C_MBk@","legs":[{"steps":[],"distance":1691.9,"duration":237.6,"summary":"","weight":237.6}],"distance":1691.9,"duration":237.6,"weight_name":"routability","weight":237.6}],"waypoints":[{"hint":"NxUAgP___38UAAAAGAAAADIAAAAAAAAAZ7JhQaCeAUCSwwVCAAAAABQAAAAYAAAAMgAAAAAAAAAIAQAA8apJANo8ugLxqkkA2Dy6AgEAbwXhRjDc","name":"Avenue Adolphe Max","location":[4.827889
{"code":"Ok","sources":[{"hint":"NxUAgP___38UAAAAGAAAADIAAAAAAAAAZ7JhQaCeAUCSwwVCAAAAABQAAAAYAAAAMgAAAAAAAAAIAQAA8apJANo8ugLxqkkA2Dy6AgEAbwXhRjDc","name":"Avenue Adolphe Max","location":[4.827889,45.759706]}],"destinations":[{"hint":"GRIAgP___38GAAAACgAAAAkAAAADAAAAIY7sQMoEdECQgxlBEv3JQAYAAAAKAAAACQAAAAMAAAAIAQAAiOVJAK4rugKI5UkAriu6AgIAvwXhRjDc","name":"Cours Gambetta","location":[4.842888,45.75531]}],"durations":[[237.6]],"distances":[[1694.2]]}%
The two durations are the same, 237.6 but the distances differ. I found other examples on other maps, too.
Is that normal?
Thanks a lot.