What I've observed is that MapRoulette works well with tasks that are highly localized and don't require much thinking. "A road crosses a railroad here: should it be a crossing, or a bridge?" is a good MapRoulette task, because unusual situations are rare, and the user doesn't need to consider anything outside the focus point. "This road segment hasn't been touched in ten years. See if there's anything wrong with it, and if so, fix it." is bad: the road segment might be a twenty-mile-long composite of a logging road, a rural highway, and a driveway, badly aligned, with half the logging end of the road having been abandoned in the 1970s. The average MapRoulette user is only going to spot one or two of the problems, and in fixing them, could well introduce more problems.
-- Mark On Mon, 07 May 2018 22:25:30 -0600 Martijn van Exel <m...@rtijn.org> wrote: > I'd like to learn more about that massive mess and how we can prevent > that in the future, Paul.To my mind, most TIGER clean up consists of > atomic tasks, which is where MapRoulette would typically come in > really handy. (Remember the 70,000 connectivity errors we fixed in > 2013/4, and the 100,000+ missing railroad crossings which were also > attributable to TIGER .) But perhaps you have something different in > mind. I'd like to think MapRoulette can help, also because not > everybody prefers the same style of working on large projects.-- > Martijn van Exel > m...@rtijn.org > > > > On Mon, May 7, 2018, at 21:12, Paul Johnson wrote: > > MapRoulette really made a massive mess of the lanes situation that a > > more systematic and big-picture effort is starting to get a handle > > on in Oklahoma. I think MapRoulette works well for smaller-picture > > stuff, and is more complimentary to StreetComplete and not terribly > > great at directing more complicated projects.> > > I've restarted my efforts at a county level to avoid having a huge > > number of tasks that fall largely in Texas, since it seems that the > > tasking manager is ultimately only capable of dealing with > > rectangular project areas even if you feed it a more complicated > > polygon via JSON.> On Mon, May 7, 2018 at 9:32 PM, Martijn van Exel > > <m...@rtijn.org> wrote:>> I’d like to see how TM and MapRoulette could > > be complementary in this > >> effort. I know Clifford has set up a TIGER related challenge on > >> MapRoulette, and I have done this in the past as well.>> > >> I feel that TM can be good for a general ask like ‘check all TIGER > >> residential roads in rural areas in this cell, demote to track / > >> unclassified or delete as needed’ whereas MapRoulette may be > >> useful for more specific TIGER cleanup related tasks?>> > >> Thoughts? > >> > >> Martijn > >> > >> > On May 5, 2018, at 12:49 PM, Paul Johnson <ba...@ursamundi.org> > >> > wrote:>> > > >> > I think it's somewhere between 2000 and 2100. I'm working on > >> > eventually handling the entire state of Oklahoma on a TIGER > >> > cleanup and enrichment. Ideally, I'd like to do the whole state > >> > at once (just for variety's sake and for even coverage), but > >> > county by county works, too. If there's a limit for the number > >> > of times an area can be split, this could really use some work, > >> > too, since 3 (based on tasks2 limit) is not enough. A 4000 or > >> > 5000 task limit should be sufficient for a single county (though > >> > definitely won't start off with that many tasks, and almost > >> > certainly won't hit that many tasks over the life of a project) > >> > if the split limit is increased (like, at least 5, possibly > >> > higher just to be on the safe side).>> > > >> > The idea is to basically keep it in that 75-100 item range per > >> > task just to keep it manageable (item count based on the > >> > resulting selection when using JOSM search to replace selection > >> > and searching for highway=* type:way).>> > > >> > On Sat, May 5, 2018 at 12:57 PM, Ian Dees <ian.d...@gmail.com> > >> > wrote:>> > I don't know. Do you see a limit somewhere? I'm > >> > happy to increase it.>> > > >> > On Sat, May 5, 2018, 12:35 Paul Johnson <ba...@ursamundi.org> > >> > wrote:>> > What is the maximum number of tasks possible on the > >> > US tasker, and is it possible to change that?>> > > >> > _______________________________________________ Talk-us mailing > >> > list Talk-us@openstreetmap.org > >> > https://lists.openstreetmap.org/listinfo/talk-us > >> > > >> > _______________________________________________ > >> > Talk-us mailing list > >> > Talk-us@openstreetmap.org > >> > https://lists.openstreetmap.org/listinfo/talk-us > >> > _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
