Hi, Thanks for the comments! Agreed on the usefulness and frequency of the tag landuse=residential. However, I'd like to mention that OSM lacks a more general tag for saying “built-up area” (which may be something like landuse=residential + landuse=commercial + landuse=retail and maybe a few more). There is a huge grey zone between the above categories as you often find a mix of these in the same street and even in the same building (ground floor as shop, other floors as residential). "Built-up" is very easy to agree on. (Easier than the dominant use of building in an area). Mayeul
El lun, 18-07-2011 a las 19:17 +0200, Frederik Ramm escribió: > Hi, > > Mayeul KAUFFMANN wrote: > > We would like to run our script on Bing data to upload the result to > > OSM. We have built the technical capacity to run it on a global scale on > > (very) high resolution satellite imagery. We would like to discuss with > > the community the best way to upload the data > > Be aware that there is no plain "uploading" to OSM. As you have already > said, your data might conflict with existing data and you cannot just > load it into OSM on a global scale. What you could do is provide your > data as an extra data source - say, a shape file - and make it available > to mappers who could then, with the help of e.g. Potlatch's Vector > Background feature, copy individual, selected data objects from your > dataset into OSM. > > > On OSM, there are several tags that are related to our understanding of > > density of building layer. > > Some of them are: > > density= (with categories or percentage) > > building:density:grade = (with numerical category) > > Neither of those are widely used. > > > In the wiki there for tagging settlements in a 0-30 scale (rank) > > according to importance. > > These are also in very limited use, and the rank is not intended to > imply a density but an importance. > > The only thing that is really widely used in OSM is > "landuse=residential", meaning this is a residential area. This is a > yes/no thing; you cannot have a "50% residential" area, and we don't > usually distinguish different grades of population density. > > That's not saying that you couldn't add some kind of qualifier to > landuse=residential as long as you remain within the usual bounds; for > example, it would not be ok to tag an area which has one building per > square kilometre as "landuse=residantial, density=1%" or so, because > something so sparsely built up is not a residential area in our terms. > > > We could build on those with some additional data or create similar tags > > to upload polygons to OSM. > > As I said, I don't recommend that you upload anything; just make your > data available for local mappers who want to use it to supplement their > work. This means that your data will not land in OSM in areas where we > have no mappers, but that's ok; it is never a good idea to have data > without people to care for it. > > Bye > Frederik > -- Dr. Mayeul KAUFFMANN, Spatial Data Analyst European Commission, Joint Research Centre (JRC) Geo-Spatial Information Analysis for Global Security and Stability (ISFEREA) Via E. Fermi 2749 - I-21027 Ispra (VA), ITALY http://isferea.jrc.ec.europa.eu _______________________________________________ Imports mailing list [email protected] http://lists.openstreetmap.org/listinfo/imports
