[OSM-talk] QA tool for finding nameless highways that are armchair-fixable

[Maarten Deen]

> Op 28-11-2022 05:18 CET schreef stevea <steveaosm at softworkers.com>:

> I'll be curious to hear feedback from this, too.  Thanks for your efforts, Lukas:  I genuinely hope they help our map!

I can see a use when you have three consecutive segments of a road, where the first and the last are named (the same) and the middle is not. This might indicate an omission.
But it is not guaranteed of course.
Every unnamed way that branches or has a junction is difficult to name in an armchair way.

Regards,
Maarten

> 
> 
> > On Nov 27, 2022, at 3:43 PM, Dave F via talk <talk at openstreetmap.org> wrote:
> > 
> > Most roads don't have names.
> > 
> > Any comparison has to be done against an authoritative database or on ground surveying, for the area in which you're searching.
> > 
> > "where the name can be interpolated from neighbouring ways. This allows to detect and armchair-fix a (small) subset of these cases with high confidence. "
> > 
> > I have a "high confidence" interpolation, from an armchair or anywhere, will lead to inaccurate data being added to the OSM database.
> > 
> > Cheers
> > DaveF
> > 
> > 
> > On 27/11/2022 20:16, Lukas Toggenburger via talk wrote:
> >> Hi all
> >> 
> >> As you might know, OSM data contains a lot of highway=* without name=*. Check your region using the following query:
> >> 
> >> https://overpass-turbo.eu/?Q=way%0A%20%20%5Bhighway%5D%5B!name%5D%0A%20%20(%7B%7Bbbox%7D%7D)%3B%0Aout%20body%3B%0A%3E%3B%0Aout%20skel%20qt%3B
> >> 
> >> I wrote a Python tool (using Sarah Hoffmann's pyosmium) at https://gitlab.com/ltog/ohni that is able to detect such highways in a planet (extract) file and report the ones, where the name can be interpolated from neighbouring ways. This allows to detect and armchair-fix a (small) subset of these cases with high confidence. The tool is tailored to minimize false-positives.
> >> 
> >> Please check it out and give feedback.
> >> 
> >> Best regards
> >> 
> >> Lukas