You know that they usually threw away any data that was already there ? I don't know whether the tool allowed you to do it better.
On Thu, Jan 21, 2016 at 6:38 AM, Jo <[email protected]> wrote: > 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 >> > > > _______________________________________________ > Talk-be mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-be > _______________________________________________ Talk-be mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-be
