snap-to-road feature impacts utility

[rwelty1889]

i drove off the beaten path today to map some new, unmapped roads. fortunately i have osm track logger on another device, as OSC snapped some of the traces over to nearby, mapped roads. i'm not sure what a good remedy is, but this is a very real issue.

[james2432]

bug is already open for this, only affects webpage. Josm and back en correctly geo code em

[alexandrui-telenav]

hi @rwelty1889, as james mentioned this affects visualisation on the webage but the photos are placed correctly in editing tools and the track page on the website ( where we don't snap to roads ). We have an improvement in the pipeline to do a better job at handling offroad and pedestrian paths.

[rwelty1889]

when the map underlying the web app is updated, will the view correct itself? and secondarily when is the map updated. OSM changes i made more than a month ago that should impact this still aren't showing up on the OSC website.

[alexandrui-telenav]

Yes, allow me give you a peak behind the scenes. There are several components in the OSC ecosystem that work with OSM. Brace yourself, it's gonna get messy:

• Map matcher: snaps tracks to roads. Used for calculating points and coverage geometry ( the purple lines ). Uses version A of OSM, let's say.

• Web tiles: map display for the website, just a canvas for the purple stuff. Version B of OSM.

• OSM compare: we recently introduced traffic signs detections in certain areas. We're using OSM to check which traffic signs are different from OSM. Uses version C of OSM, the freshest.

• Maps SDK for the apps. Canvas for the purple stuff on mobile. Version B of OSM, same as the tiles.

Sounds like it's all over the place, I know. I would absolutely love everything to be in sync, but we're just not there yet. Except OSM compare we're reusing existing components with different pipelines and update cycles, but the point was to clarify the role of each and what happens when something updates. When we update the map matcher, the purple lines will change for the better. When we update the web tiles, the purple lines will be drawn on the updated map.

[ToeBee]

As far as I can tell the map matcher database is about 2 years old at this point. The map tiles are a little bit newer but also over a year old I think.

This creates the odd situation where some roads are shown on the map but it is impossible to get coverage along them. I have done 3 or 4 passes along the South Lawrence Trafficway now:

[martijnv-telenav]

Duplicate of #38 -- let's discuss resolution there. Thanks for reporting @rwelty1889 (even if it was a long time ago)