[Talk-us] Map roulette challenges - Missing named roads [VA, NJ, NY, MN, SC]

Martijn van Exel m at rtijn.org
Wed Feb 13 20:04:53 UTC 2019


I did a fair amount and noticed similar things — some of the suggestions concern private drives, others are not corroborated by available aerials. But I did find a decent ratio of fixable things, and as you go through the tasks, you get a better sense of which ones are likely to be fixable. The rest you can just mark as too hard or not an issue.

As for TIGER fixing, I was inspired by Mike N’s posting about his TIGER fix up effort and figured you can use MapRoulette to do some of it. A comprehensive review of TIGER roads is probably best done using his Tasking Manager approach, but to review just the ‘main’ roads MapRoulette is quite usable. I created a challenge for Utah as a proof of concept and working my way through the tasks: https://maproulette.org/mr3/browse/challenges/3610 <https://maproulette.org/mr3/browse/challenges/3610> 

If you want to help out, great. If you want to recreate this challenge for a different area, let me know. The overpass query can easily be adapted.

Martijn

> On Feb 13, 2019, at 10:31 AM, Kevin Kenny <kevin.b.kenny at gmail.com> wrote:
> 
> I've done some of the MapRoulette items for this project, but frankly
> I'm not that good at it. For the stuff nearest me, most of the missing
> roads are either too new to show on the orthos (which are updated on a
> rolling 4-year cycle) or else are old platted rights-of-way that are
> now abandoned. I find that I can't do much with them without
> boots-on-the-ground knowledge. I was therefore able definitively to
> dismiss a few of them with: "I've been there. There's no road," but
> that's been the exception rather than the rule.
> 
> Finding that sort of thing in the MapRoulette items that I have taken
> on makes me wonder what sort of data quality we'll get out of this
> effort. Frankly, I've found TIGER review (and this part of the world
> is still very much a TIGER desert!) looks to be more fruitful. I find
> the NYSDOT database to be an extremely useful cross-check on names and
> purported alignments, though. Many ways shown in TIGER around here
> were digitized from pencil sketches of census workers and can be
> hundreds of metres from the actual locations, but NYSDOT usually has
> its information derived at least crudely from survey data.
> 
> But perhaps I'm being too much of a perfectionist.
> 
> On Wed, Feb 13, 2019 at 11:51 AM Oisin Herriott (Insight Global Inc)
> via Talk-us <talk-us at openstreetmap.org> wrote:
>> 
>> Hi,
>> 
>> 
>> 
>> Thanks Kevin for the tip! I have updated the instructions to call out the NYS ortho online imagery layer to look at for the NY challenge.
>> 
>> 
>> 
>> Also, after some more fiddling with the roads dataset for the project, I have also reduced number of roads to check and updated the New York challenge here:
>> 
>> 
>> 
>> New York: https://maproulette.org/mr3/admin/project/2346/challenge/3593
>> 
>> 
>> 
>> Thanks again for the tip!
>> 
>> Oisin
>> 
>> 
>> 
>> Sent from Mail for Windows 10
>> 
>> 
>> 
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