Hi all, Perdon, per yo voy a escribir en ingles por que mi español es si limitado que no es bueno combinacion de communicacion y tiempo (con cosas mas tecnicas / especificos..). Estoy en Nicaragua y espero que poco a poco voy a escribir mas en español..
To the question of encircling a settlement (hamlet, village, town or even a whole city) with landuse=residential : Julio is very right that residential landuse should be used only for those areas that are primarily residential and other landuses should be tagged as such. Ideally. But it is quite common practice to start the mapping of an empty spot with e.g. the following steps: * Draw main highways and other main roads (unclassified connecting roads in urban areas, also clearly noticeable residential roads) * Draw main waterways and lakes, etc * Encircle urban areas with landuse=residential * Add main place names (cities, towns, villages, hamlets, suburbs/neighbourhoods) * Add main points of interest * etc As already said the encircling of the whole urban area with residential landuse is clearly sub-optimal. But given that I think it's most common that residential landuse is the predominant landuse over an urban area it's not exactly incorrect. It's easy to after this go through the encircled area and either adjust & split the landuse into multiple polygons or make a multi-polygon (meaning that you draw the commercial, industrial, etc landuses as polygons inside the large encircling polygon and then select all and convert them into a multipolygon. One could quite solidly say that this represents the reality well. All in all, the landuse issue is a bit of a challenge within OSM, I think. Let me explain: To my understanding OSM doesn't have a globally shared understanding/policy/rules-of-tagging on how we define the "resolution" of landuse. By one lot? By a block? By zoning information (.. which would be impossible to add to OSM in all areas where this information is not licensed with an OSM-permissive license)? Something else? What I have seen in different countries -- and within countries -- is quite a range of practices. I don't personally have a consistent way of tagging landuse, I should add. I think that one simple reason for the landuse not having a mature "tagging culture" is that even though I added the "encircling of urban areas with landuse=residential" third on the list above of one possible order in which places could get mapped systematically the thing is that tagging the more detailed landuse doesn't really come into the picture before a few more steps that include a ton of more POIs, leisure areas, tracks, paths, beaches, bridges, etc, etc. ... I think that simply looking at how the whole community has been mapping the world over the years it's somewhat clear that mapping the details of landuse don't seem to come into play _on average_ until the map is in quite a mature stage. And maybe globally speaking -- and this includes Latin America and the Caribbean in almost its totality -- we are not yet at that stage of maturity? All of the above said, I want to stress that I think it _would_ be great if people tagged other "urban landuses" more (talking of the "main" classes other than residential, specifically commercial, retail, and industrial -- typically offices, shops and warehouses & production areas; cemeteries are already usually mapped ok). I try to do that myself too. But as noted, I don't think it's neither wrong nor bad to start the mapping of an empty area by drawing the main roads + waterways + lakes, etc through/in it and adding main place names + main POIs .. and also encircling the whole settlement with landuse=residential. This is pretty much what the Humanitarian OpenStreetMap Team (HOT) has been doing in its various remote mapping activations such as the current mapping of Ebola struck areas <http://wiki.openstreetmap.org/wiki/2014_West_Africa_Ebola_Response> in Western Africa what Pierre Beland talked about at ConMapas in Mexico. My understanding is that this model -- which does include the improving of the landuse to greater detail -- has been seen as a good balance in getting rapidly ahead in the early stages of the mapping and then piecing together a detailed map over time. Saludos, -Jaakko -- [email protected] * Skype: jhelleranta * Mobile: +505-8845-3391 (Nicaragua) * Voice(mail) / SMS / What's app: +1-202-730-9778 * http://about.me/jaakkoh 2014-10-22 6:05 GMT-06:00 Julio Costa Zambelli <[email protected] >: > Marcelo, > > A mi entender el landuse=residential se debe usar solo en los suelos > que tienen ese carácter (residencial, habitacional), y no para > "rodear" pueblos o ciudades completas, dado que todo pueblo o ciudad > tendrá, al menos, algún áreas dedicadas al comercio (landuse=retail), > a cementerio (landuse=cemetery), en construcción > (landuse=construction), futuras construcciones (landuse=greenfield y > landuse=brownfield), rellenos sanitarios (landuse=landfill), etc. > > Saludos, > > Julio Costa Zambelli > Fundación OpenStreetMap Chile > > [email protected] > > http://www.openstreetmap.cl/ > Cel: +56(9)89981083 > > > 2014-10-21 19:44 GMT-03:00 Marcelo Aliaga <[email protected]>: > > Estimados, veo algunas ciudades o pueblitos con Landuse = Residential. > > > > Lo usaremos como estándar? La pregunta de fondo es por que veo que unas > > tienen y otras no. > > > > Atento a sus comentarios, > > > > -- > > Ing. Marcelo Aliaga Quezada > > [email protected] > > > > _______________________________________________ > > Talk-cl mailing list > > [email protected] > > https://lists.openstreetmap.org/listinfo/talk-cl > > > > _______________________________________________ > Talk-cl mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-cl >
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