On Fri, May 14, 2010 at 9:50 PM, M∡rtin Koppenhoefer <dieterdre...@gmail.com > wrote:
> 2010/5/14 John Smith <deltafoxtrot...@gmail.com>: > > On 15 May 2010 05:27, Jonas Minnberg <sas...@gmail.com> wrote: > >> Oh and I forgot: > >> * landuse=grass overlapping landuse=wood, grass set as layer=-1 > > > > Are you mixing up landuse and land cover by any chance? > > > you're insisting on this one? Yes, you are right: in traditional > geoscience landuse is a precise term, it describes the usage of a > given area in a generalized way. Eh, I am not insisting anything - that was an example of bad editing IMHO. There really should be tags for rendering-hints to mapnik - until mapnik handles everything. That way people could tag correctly and still get the appearance they wanted... > Unfortunately this is not true when > it come to OSM: just open your eyes. Have you ever downloaded a piece > of Berlin? You would be astonished ;-). Our landuse is often > fragmented (IMHO not bad, because if there is different stuff, how > else should you point that out? It is easier to summarize different > landuses to one according to type and size than it is to divide 1 big > generalized landuse automatically into all of it's subparts). > > How many landcover-tags are there in OSM? Is grass, garages or > landfill a landuse? Another example: cut off (burned down) forest: > this would probably still be called landuse=forest in an official map, > but in OSM if there are no trees it will not be a forest. > > On the other hand: I would like to see this mess tidyed up. In this > case I suggest to first change (extend) render rules and then > encourage people to change tagging. This is all because of tagging for > the renderers: because it is sad to tag "correct" and you don't see > anything on the map ;-). I don't promote a cluttered or coloured map: > I do promote rendering of lots of tags, but they don't have to get all > different colours. Also few colours (i.e. many features/tags with the > same colour) can be a way to do it. > > cheers, > Martin > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > http://lists.openstreetmap.org/listinfo/tagging >
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