About that CRAB import. In The Netherlands they already created a tool to assist with that for their BAG import. I think we should look into reusing that, adapted to the data we have available.
Polyglot 2016-01-21 5:35 GMT+01:00 Marc Gemis <[email protected]>: > > On Wed, Jan 20, 2016 at 5:19 PM, Jasper Michels <[email protected]> > wrote: > >> It was mentioned that there exist free datasets for the flemish part. >> (and cant we import the building outlines of Agiv?) >> > > At this moment someone is working on converting the GRB data into > something that can be "easily" imported. > > I've put "easily" between quotes, because it will still be a lot of work > in areas where there are already buildings. The reason is that we should > try to keep the history and data of the existing buildings. With data I > mean POI info, heritage information, house name, 3D, building type, etc. > Even when there is no information, it is polite to keep the names of the > previous mappers in the history of the OSM way. I do not like an approach > where all existing data is deleted. > > I have been replacing old AND data and buildings that I had traced from > Bing imagery with data based on AGIV aerial images and recently with GRB > data. It is labor intensive. > > The scenario that I follow is > > * move the old house out of the way > * redraw based on GRB > * replace geometry of old building with new (from utilsplugin2). this > keeps the history > * drop source=AND > * add building type based on aerial images and add address (address from > AGIV) using housenumbertool > > Sometimes (with a lot of connected houses), I just try to reshape the old > building way, because moving all houses out of the way is more difficult. > > With an import you do not have to do the drawing, but you still need to do > the replace geometry. The other steps that you have to perform depends on > the import data: is the building type correct ? is the address data already > merged ? > > Since this is so much work to correct, it's a pitty to see that some power > mappers are rushing through the current address data and only add rough > approximations of the buildings. L-shaped buildings become rectangles, in > terraces half of the buildings are ignored. Correcting this afterwards, > might take more time than trying to do it correctly the first time around. > > In conclusion, you can already draw the buildings based on GRB now. No > need to wait until the import is ready. For most buildings this is not too > difficult. Churches and similar buildings with a lot of extrusions might be > left until the import data is ready. > > just my .5 cents > > regards > > m > > _______________________________________________ > Talk-be mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-be > >
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