2012/3/24 Giuliano <giuli...@zamboni.pro>: ... > I'm sorry but I have to leave, I don't have time to search an attach you > all the links regarding this imports. > I wish that some other osmer involved will do that and explain you this > project in the details. > > Bye > Giuliano
Hi, I imported some data from the same source, so I'd like to to clarify (with my row English ;-) the cause of the artificial breaks in objects. The data imported are given "cut" in square by the source [1]. Mappers who import them are aware that an object, for example a building, must be merged with its half if this falls in a nearby square. Some users merge them before uploading the new data to the map, some others upload the buildings cut in half and then merge them in a second changeset. The number of squares in which data are given by the source is very high, one for each row of the table [2]. In that page each mapper who import some data should write what data he imported by writing "Sì" on a column, just to keep a memory of where data was imported. You can see where buildings or vegetation where imported in this [3] map too, by clicking on "fabbricati importati" or "vegetazione importata". The data imported mainly regards buildings and vegetation (the columns FABBRIC and VEGET_A of the table). Mappers who import the data usually follow this guide [4] and coordinate with each other through the regional mailing list [5]. What I like of this approach is that data are not imported by one people for all the region, instead, as Giuliano said, imports are usually done by local mappers. For example I made the table on the Wiki and the map but I just imported less of ten squares, where I live. Since now more than 20 mappers imported data from that source, following the same guide and the same tagging scheme [6], which was discussed before in the national and regional mailing list. The downside is that the quality of the import depends on the care and the attention which every mapper puts in the import of his (*) zone. Some makes all the checks and fixes before uploading the new data, others do some corrections in following changesets (for example I preferred to merge the buildings after the import), and some others unfortunately seem to... care less about quality [5]. I take the chance of this message to urge the mappers who imported some data, and whose zone needs some fix, to merge the buildings at the edge of the squares and to do the others checks that must be made (overlapping buildings, duplicate nodes, self-intersecting ways... ). Ciao, Groppo (OSM user: coso) [1] http://idt.regione.veneto.it/app/metacatalog/ [2] http://wiki.openstreetmap.org/wiki/Veneto/Tabella_import_CTR [3] http://dl.dropbox.com/u/41550819/OSM/Overlay_CTR_OSM/Overlay_CTR_OSM.html [4] http://wiki.openstreetmap.org/wiki/Veneto/Guide_e_documentazione/Import:_dalla_CTRN_Veneto_a_OSM [5] http://liste.remixtj.net/listinfo/osmveneto [6] http://wiki.openstreetmap.org/wiki/Veneto/File_delle_Regole_SHP-to-OSM [5] I'd like to specify that I'm not talking about Giuliano here! :-) (*) unfortunately I think there are not "her" _______________________________________________ Talk-it mailing list Talk-it@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-it
