[OSM-talk] buildings

David Earl david at frankieandshadow.com
Mon Aug 13 18:00:45 BST 2007


On 13/08/2007 17:37, Darryl Shpak wrote:
> Martijn van Oosterhout wrote:
>> In my original validator I made an exception for this: if a way is
>> looped (so that it is an area) then the the arrows don't have to face
>> the same way. They still need to be ordered, just the arrows don't
>> have all face the same way.
>>
>> This solves your problem. I seem to remember convincing someone to fix
>> osmarender so that it handles this case fine. However,  don't think
>> any other parts of the system handle this...
>>
>>   
> 
> Is this considered a "good" way to create areas? I'm doing some landuse= 
> tagging, and the obvious borders tend to be things like roads and train 
> tracks. I've avoided using the existing segments to create the landuse= 
> ways, because the segments would not be pointing in consistent 
> directions...but if this is "ok", it would make my work easier, and I 
> think it would also make the data cleaner.

I think it is hard to get this right by sharing segments because they 
invariably end up the wrong way, or someone changes them not realising; 
and also it is hard to edit them later. Much better IMO to have separate 
segments for everything.

I am sure others will disagree.

David




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