[OSM-talk] Mapping Qs: Hotel Complex? Beach? Enclosed Woodland?

Michael Collinson mike at ayeltd.biz
Wed Aug 22 15:37:53 BST 2007

At 03:18 PM 8/22/2007, Tom Chance wrote:
>80n wrote:
>>However, we are missing any kind of specification of priority for 
>>overlapping landuse elements.  Should we just say that the render 
>>order is residential, commercial, industrial,... or should the 
>>render order be undefined, so that layer= has to be used 
>>explicitly, or should the default order be alphabetical?
>>Or maybe some smarter method, like smaller areas that are 
>>completely enclosed by larger areas get rendered later?
>That smarter method would be ideal. Otherwise / in cases where they 
>overlap, I think that residential, industrial, commercial, retail is 
>as good a default order as any. So long as it's clearly documented 
>in the right places and consistent with what Mapnik does, there's 
>not much more you can do surely?
>Ideally we'd all make sure they didn't overlap unless there was a 
>good reason, as Andy suggests, but I think so many people are 
>tracing huge residential areas and then sticking in smaller other 
>areas that such dedication is a pipedream :)

An alternative to allay Andy's concern would be to have some sort of 
urban=yes flag for those big areas. I recall something like that 
being suggested a while back.


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