Thank you all for sharing your views. I chose not to go further with the import - instead I will describe the procedure I used - maybe someone could come up with improvements that would make the result look better/actually usable.
- create a basemap.at xml config for mobac (http://mobac.sourceforge.net/), select and export to png file (zoom: 19) - open png file in gimp, select -> by color, click on one building, copy&paste to new file, threshold, index -> 2 colours (potrace requires bi-color image), save buildings into pnm file - potrace -t 100 -k 0.3 -o kittsee.svg -s kittsee.pnm - import to josm (importvec plugin, 10 000 units = 1995 m) - select all ways (^f - type:way - simplify using simplifyarea plugin, using too aggressive values could result in triangular buildings, OTOH too forgiving ones could leave you with too many nodes and/or speckles caused by nearby housenumbers or jpeg artefacts - turn on basemap.at tms background and align, tidy up, add tags All the best, jose On Thu, Dec 26, 2013 at 5:09 PM, Frederik Ramm <[email protected]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > before this is imported it would at least need proper > documentation on the Wiki import catalogue. > > In addition to the points mentioned by Michael - > > > * adjacent buildings do not share nodes * no multipolygons at > > buildings with holes - those would have to be created manually * > > The buildings are not orthogonalized (q in JOSM) * nodes at very > > obtuse angles (e.g. 88°) should be removed. > > I would like to add > > * source tag on every building (source tag on changeset would be enough) > * existing buildings are not reflected - they would have to be removed > from the import data. > * very small buildings seem to be badly traced (triangular shapes etc) > - - perhaps just drop everything below 10 square metres or so. > > There seem to be a number of mismatches between the data and Bing > imagery - but I guess that's because basemap.at is newer? Examples: > http://www.remote.org/frederik/tmp/kittsee.png > > Bye > Frederik > > - -- > Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSvFSXAAoJEOx/uhGAJu9H1EcH/inTfdlr5O2KTLkIiiueRrfI > hZvIjzgCxNvSj2SBgq2gWO3HayE6+X2yzUWOvQH3LCo5h1CT+qtvl1oL3cczlxhJ > dn1a0dLAtZ3lgog+GshkRSm2Ih6lvaeWE5VUByZuvlgy4YYC/USXx912+Q5UASdr > LkbMRhcdM0QwBY1vgBXOatYnzBONRzkylO1ngFV91Rx6Ggh4hdsAP3bjyf6eyQmC > v4SNecG7uNPgC4cmpkM16R9EoKbCuqxhzfmY0QcaqgIFEujiTHbHLU0NqkEAbjys > LmBhIiDZdL2RdL0Kp0zQ8uUnN3CLOVPiy9sseYWpXzZpV8Z4a3u9OzfmcCfXOSs= > =PT+P > -----END PGP SIGNATURE----- > > _______________________________________________ > Talk-at mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-at >
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