Hello Steve, I think I understand your questions, I am a GIS expert too. But when I take on a HOT task I ask myself, which features are critical to first responders?
First of all: Access. So I try to connect networks of roads an tracks accessible to vehicles. Second: Possible human presence. So I map buildings. I do not go into details to much as I feel it is more important they know there is a building then what the building is shaped like. When I discover a group of buildings and I do not have time to map them individualy, I create a residential area. When I come across an existing residential area that is roughly shaped in a later task and I have time to map the individual buildings, I do that and reshape or remove the residential area. And with these, I hope I help lay the basic structure for operations in the field. 2015-04-30 8:28 GMT+02:00 Michael Krämer <[email protected]>: > Here a few quick comments to start with. But it comes with a disclaimer: I > am not an expert for the Nepal activation. So these are just my personal > comments as a mapper. > > 2015-04-30 8:07 GMT+02:00 Steve Bower <[email protected]>: > >> I'm working on project #1081 Nepal detailed mapping 2nd pass. I'm new to >> OSM but have lots of GIS experience. >> > > Welcome! > > (1) The instructions say "do not trace all the paths in the fields or >> small paths of a few hundred meters that do not connect to road networks." >> If there are existing paths like that in the data, should I delete them? >> > > Personally I would not delete them. > > >> (2) An existing long way tagged "highway=track" appears to start as a >> track that could support motorized vehicles (2 tire tracks are visible), >> but soon becomes very difficult to distinguish and is perhaps impassible. >> I'm guessing it was traced from different imagery (I checked Bing and >> MapBox, per the instructions) - I would not have traced much of it - too >> hard to see. Should I split this long way and label the second part >> 'highway=unclassified' or similar? >> > > Highway tagging can be confusing: If it is not suitable for a car it > should be 'path' instead of 'track' while 'unclassified' is a minor road > that does not classify for 'tertiary' or above. The tag for an unknown road > is 'highway=road' but I hardly use that. If you want to know more about > highway tagging I recommend [1] and/or [2]. > > >> (3) Some small hamlets of 5-10 buildings, accessible only by paths, are >> enclosed in existing 'landuse=residential' polygons. The validation >> instructions are to confirm there are highways connecting 'residential' >> areas, and that there are 'residential' polygons around clusters of "20 or >> so houses". Should I remove the 'residential' polygons around tiny hamlets >> that are not on roads? >> > > Again I would not delete them. I guess if there are building there likely > is a path leading there but it might not be visible in the imagery. > > Sometimes the instructions for tasks change or for subsequent tasks they > may not be perfectly in alignment. Different mappers will always make > different decision on what to map and what not. > > Michael (user Ohr) > --- > [1] http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa > [2] https://wiki.openstreetmap.org/wiki/Nepal/Roads > > _______________________________________________ > HOT mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/hot > > -- [image: http://www.dogodigi.net] <http://www.dogodigi.net> *Milo van der Linden* web: dogodigi <http://www.dogodigi.net> tel: +31-6-16598808
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