On 18/01/13 00:01, Cruz Enrique Borges Hernandez wrote: > Fist of all, thanks for the comments. I will answers them in place. > >> There appear to be some ways with duplicated way nodes (i.e. a way having >> the same node multiple times, other than when closing a loop). JOSM's >> validator can find these. > > This have already been addressed. > >> There are some duplicate nodes. An example can be found at 40.8253351, >> -5.4437406. I'll be talking more about duplicate nodes later. > > I am not sure about this (most probably is a duplicate node in the original > data) > but in any case the JOSM validator should catch these. We have tried very hard > to reuse as much nodes and ways as the data allow us. > >> The road network does not appear to be consistently connected, for example >> at 40.8182542, -5.4476705 > > We are already aware of this problem. The road network is probably the less > interested part of the dataset: they are inaccurate and their geometries are > completely screw-up. It is only provided because some locals mapper thought > that it can be useful as a starting point in a completely empty place. > >> Tagging: >> >> You appear to be using landuse=reservoir for unknown water. Most of the ones >> I looked at would be better suited as natural=water. natural=water is also >> better suited for unknown bodies of water. > > Geometries with water tags are one of the most difficult tags to translate. > The problem comes from the original data: it does not maintain internal > consistency between different towns. Others difficult tags are parking > spaces and greenfield for the same reason. In the end, all of them (and > probably others ones that will appear in other regions) should be revised > manually by the local community. We have already planned to have > wiki pages with regional information about the import process given tips > about this things. > >> Are there any tags that will be used other than those in this sample file? > > This is the full list (sorry about the spanish): > http://wiki.openstreetmap.org/wiki/Traduccion_metadatos_catastro_a_map_features > > Please, if you found any mistake, let us know before changing the table.
I let you know some mistakes I've seen: 1) In "Tipos de cultivo", the MI "Mimbreras o cañaverales", is tagged wetland=marsh, that is better tagged as natural=wetland + wetland=marsh ( http://wiki.openstreetmap.org/wiki/Tag:natural%3Dwetland ) 2) For regular expresions for ROTULO, at the end of the page, I think tags should be consistent with those we have in other parts of the file, like for example: Ermita (RER,SER) is tagged as amenity=place_of_worship, religion=christian, denomination=catholic, building=hermitage in the Religioso (R) section, but tagged as amenity=place_of_worship, religion=christian, denomination=roman_catholic, building=church in the table of "expresión regular" at the end of the page. I didn't correct any of these errors. > >> The import is proposing a new tag, use=agricultural. This is found on >> landuse=meadow areas. Are there any new tags that this import is proposing >> to use? > > This is ,almost for sure, a bug in our code. Anyway, the complete list are in > the previous link. > >> How were the tag translations arrived at? > > The translation tags was made from: > - What catastro documentation said: > > http://www.catastro.meh.es/pdf/formatos_intercambio/catastro_fin_cat_2006.pdf. > > - What experts mappers have said. In fact, the pages have been almost > completely filled by expert mappers from the Spanish community. > - What persons close to the catastro office have said to us. > - Obviously, our own experience using this data in other projects. > >> Taking the example of >> landuse=greenfield, was this decided on based on descriptions from the >> catastro, or was it based on inspection of the areas that it applies to with >> aerial imagery, surveys or other resources? >> >> The areas tagged with landuser=greenfield aren't areas with no past or >> present buildings scheduled for development (i.e. virgin ground that will be >> turned into a construction site) > > Our experience over that specific tag is that catastro have overused it: > there > are places tagged (in catastro) as a greenfield that should be another thing > (normally landuse=village_green or recreation_ground). Probably this is > due to differences in the definitions of the two ontologies. > >> If you go for this method, how do you intend to handle duplicate nodes? The >> problem is that if two files that contain nodes at the same position are >> uploaded in two different edit sessions JOSM will not merge the nodes, even >> if they were merged in the concatenated file. > > This problem should not happen never. The splitted files consist on an entire > block of buildings that cannot share any node, by definition. In any case, the > conflation with existing data will be responsibility of the local mappers. > >> Other: >> >> To what extent do you intend the importers verify the data? Do you expect >> them to >> >> 1. Verify each object in some way against some other source (e.g. imagery) >> 2. Verify the file for consistency (e.g. that no buildings are in water) >> 3. Rely on cat2osm2's verification > > We expect them to use (at least) 1 and 2 and of course the JOSM validator. > I am not sure on what you mean with 3. > > Moreover, we think that this task should be made ONLY by experts mappers > who really know the surrounding area in order to be able to fix the > ambiguities or the mistakes. Even more, probably some of them have to be > resolved "in place". > > _______________________________________________ > Talk-es mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-es > -- -------------------------------- Por favor, non me envíe documentos con extensións .doc, .docx, .xls, .xlsx, .ppt, .pptx, aínda podendoo facer, non os abro. Atendendo á lexislación vixente, empregue formatos estándares e abertos. http://es.wikipedia.org/wiki/OpenDocument#Tipos_de_ficheros _______________________________________________ Talk-es mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-es
