You know I probably agree with most of the 'mapping based on imagery' remarks! ;-)
It's on our feature request list for maproulette to limit to area and yes joost has a map with all the differences so you can use that (it's in fact the background map in maproulette) but the big advantage of maproulette is the ability to log false-positives. This way we can re-run the comparison without having the false positives coming back every time. You can go to the overview of the challenge (what you call 'task', the collection of all wegenregister cases) by selecting the little 'cogs' on the top right and then click 'view challenge', then you get all the little task on one big map. This way you can select tasks in your area. Met vriendelijke groeten, Best regards, Ben Abelshausen On Tue, Nov 14, 2017 at 11:10 AM, Marc Gemis <marc.ge...@gmail.com> wrote: > It would be nice if I could find limit the "tasks" to an area I'm > really familiar with or that I have surveyed. I know Joost has a map > somewhere that shows the differences. > But I might easily fix all the problems in my town without leaving the > computer right now. > I know this is not how MapRoulette works, but would be nice for this task. > > wanted to write something about "mapping based on imagery", but I want > to keep it decent :-) > > m. > > On Tue, Nov 14, 2017 at 12:00 PM, Ben Abelshausen > <ben.abelshau...@gmail.com> wrote: > > Marc, > > > > Thanks for the not-so-positive feedback. > > > > I'm a bit disappointed by the quality of wegenregister as a comparison > basis > > (but I should have known better by now) but I'm still conviced about the > > general idea. In the beginning we had another subset of the data with > only > > what we are relatively sure of coming from wegenregister but we noticed > that > > the classifications don't make sense all the time. In the end we took all > > roads that had a name; at that point we discovered there are a lot of > > driveways in there with a name (ouwch!). > > > > It all comes down to: trying to detect missing stuff in OSM and I think > > there are some very good examples in the data for example these: > > http://maproulette.org/map/2789/3111729? > > http://maproulette.org/map/2789/3108600? > > > > We also ask **not to map when not sure** so if you look at the > instruction > > you will see we don't ask to copy the data but to map whatever is > missing, > > by the same standards as usual. If that's not possible remotely then > don't > > map. > > > > We also shouldn't copy the streetnames except when we are sure it's an > > actual road. And yes sometimes that means a guestimate of what's a > driveway, > > but how's that different from what we've been doing all along based on > > imagery? > > > > If anyone else has questions, feel free! Also, don't map when you're not > > sure! It's better not to have data, compared to having bad useless data. > > > > Cheers, > > Ben > > > > On Tue, Nov 14, 2017 at 9:37 AM, Marc Gemis <marc.ge...@gmail.com> > wrote: > >> > >> I've tried a couple of "tasks". > >> I found it pretty hard to fill in the proper road type without being > >> familiar with the local situation. > >> The fact that Wegenregister adds a name to each and every long drive > >> way is not going to help with the OSM data quality. > >> > >> So I gave up and went back to processing my surveys. > >> > >> m. > >> > >> On Tue, Nov 14, 2017 at 9:29 AM, joost schouppe > >> <joost.schou...@gmail.com> wrote: > >> > Hi, > >> > > >> > Ben and I have been working on "the road completion" project for quite > >> > some > >> > time now. The idea is to build a toolchain that harvests any open data > >> > source on road networks, and turn it into a list of "possibly missing > >> > roads > >> > in OSM". > >> > > >> > For a project overview, look here: > >> > http://www.osm.be/2017/01/06/en-project-road-completion.html > >> > > >> > Because it should be scalable and easy to adapt, we started with very > >> > simple > >> > analysis methods. The idea is to make something simple that is quick > to > >> > set > >> > up and easy to extend. The repository is on Github [1] > >> > > >> > > >> > We started of with Wegenregister, an extensive road dataset for > >> > Flanders. A > >> > first selection uses only roads that should be easy to map with just > GRB > >> > and > >> > aerial imagery. Because feedback is essential (to correct the many > >> > mistakes > >> > in the source data, to fine-tune our processes, to avoid having a road > >> > seem > >> > missing until someone uncritically adds it), we are using Maproulette > to > >> > coordinate task completion. Instructions are available on the wiki [2] > >> > > >> > > >> > We're presenting this project at the Informatie Vlaanderen Trefdag. > It's > >> > a > >> > big thing that we got ourselves invited there at all! [3] > >> > > >> > If you want to help, start the task, have a look at the Github, > improve > >> > the > >> > documentation, find another dataset to use, etc! > >> > > >> > 1: https://github.com/osmbe/road-completion > >> > 2: > >> > > >> > https://wiki.openstreetmap.org/wiki/WikiProject_Belgium/ > Road_completion_project/Instructions > >> > 3: https://overheid.vlaanderen.be/trefdag-informatie-vlaanderen > >> > > >> > > >> > > >> > -- > >> > Joost Schouppe > >> > > >> > _______________________________________________ > >> > Talk-be mailing list > >> > Talk-be@openstreetmap.org > >> > https://lists.openstreetmap.org/listinfo/talk-be > >> > > >> > >> _______________________________________________ > >> Talk-be mailing list > >> Talk-be@openstreetmap.org > >> https://lists.openstreetmap.org/listinfo/talk-be > > > > > > > > _______________________________________________ > > Talk-be mailing list > > Talk-be@openstreetmap.org > > https://lists.openstreetmap.org/listinfo/talk-be > > > > _______________________________________________ > Talk-be mailing list > Talk-be@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-be >
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