I created a document to help people coming to our National Mapathon containing a fast introduction to JOSM:
https://docs.google.com/document/d/1VgTydfSsWGE0Bv34GrekHn8qPUW9CppR_1N66RoIDok/edit?usp=sharing 2017-03-21 22:37 GMT+01:00 Kretzer <[email protected]>: > > I didn't know about the JOSM shortcut. Thanks, that's very useful! > > Also Iove the idea of having a scaling tool in iD - would second that > suggestion. > On the other hand I don't have much practical use for the new mirroring > tools. Maybe others have the same priorities? > > > > Am 20.03.17 um 08:29 schrieb Jo > > > In JOSM you can use the 'Improve way accuracy' tool (w) to conveniently > > drag those corners followed by 'q' to square the building. That is > somewhat > > less time consuming than redrawing (and it keeps the history). A > validator > > can choose to either do this, or to invalidate the task. It's probably a > > good idea to include a link to a video explaining how to fix the problem, > > in case the square gets invalidated. > > > > Concerning the round buildings, it would be good to make mappers aware of > > the possibility to use Ctrl-Alt-drag left mouse button to rescale after > > using Ctrl-d. OK, that's also a JOSM thing. I think we should instruct > > people to use JOSM for HOT mapping in the first place or finally > implement > > this kind of useful functionality in iD. Maybe there is still time to > > propose it for GSoC? I won't propose it, as I'll only propose things > that I > > can mentor myself. > > > > Polyglot > > > > 2017-03-20 1:31 GMT+01:00 Daniel O'Connor <[email protected]>: > > > > > I tend to use osmose to detect 'large building intersection clusters' > at a > > > very large scale - IE during the Nepal activation. > > > Others that show up building-in-building or 'special building due to > size > > > marked building=yes' are also useful QA checks, often catching whole > > > residential areas marked as a building for example. > > > > > > I think those may be the low hanging fruit of validation; and worth > > > considering as a recommended check at the project level. > > > Would be interesting to integrate those results into a 'validations' > tab > > > per tile or per project, keyed off of an osmose feed. > > > > > > Beyond that, its reasonably common to encourage 'squaring' the > buildings - > > > but I dont think you'd be able to push much further than that and get > the > > > majority doing it by default (would have to make it easier to one click > > > improve the traced data somehow) > > > > > > On 20 Mar 2017 7:47 AM, "john whelan" <[email protected]> wrote: > > > > > > We tend to think of mapping buildings as one of the simpler tasks we > ask > > > mappers to do but recently I've been looking at code that can extract > > > buildings from OpenStreetMap aggregate the floor area then calculate an > > > estimated population. > > > > > > Trouble is when I look at the map in some areas the buildings are > > > accurately​ mapped but in others the standard of mapping leaves much > to be > > > desired. Validation is a problem. Do we expect validators to > carefully > > > move the four points to the correct corners and square them? This is > more > > > effort than remapping them with the JOSM building_tool plugin and is > > > unlikely to happen. I also come a cross a large number of settlements > > > tagged building=yes or building=residential these I correct as I come > > > across them. > > > > > > Round huts are a particular problem, it's very easy to copy one hut > which > > > means they often end up being mapped the same standard size. > > > > > > Perhaps if we explain why it is important to map buildings accurately > in > > > the instructions we might get better results. > > > > > > Dunno, perhaps answer is not to estimate population based on floor > area. > > > > > > Thoughts? > > > > > > Thanks John > > > > > > _______________________________________________ > > > HOT mailing list > > > [email protected] > > > https://lists.openstreetmap.org/listinfo/hot > > > > > > > > > > > > _______________________________________________ > > > HOT mailing list > > > [email protected] > > > https://lists.openstreetmap.org/listinfo/hot > > > > > > > > _______________________________________________ > > HOT mailing list > > [email protected] > > https://lists.openstreetmap.org/listinfo/hot >
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