[OSM-talk] Landuse areas etc. abutting highways

Lester Caine lester at lsces.co.uk
Wed Oct 7 09:23:46 BST 2009

John Smith wrote:
> 2009/10/7 Lester Caine <lester at lsces.co.uk>:
>> Mike Harris wrote:
>>> Chris
>>> Despite the well-argued views of a minority, I am persuaded by the equally well-argued views of the (considerable) majority who favour option (b).
>>> That is not to say that there isn't room for using a bit of common sense! I wouldn't divide up Delamere Forest into individual areas bounded by paths etc. - the paths in a sense form part of the forest landuse - but I would probably divide a residential area with, say, a major road going through it and would certainly divide landuse=farm either side of a road, for example, if I knew that it was a different farm on either side.
>> 'Peak district national park' for example needs a boundary, but there is
>> one hell of a lot of detail contained within ;) And as you say there is
>> no need to break large areas of landuse='farm' if there are many
>> footpaths and roads crossing it - BUT at some point it may be necessary
>> to be able to calculate the 'cultivatable area' and this needs the
>> detail to remove those areas of roads and the like. I think this is
>> where the a/b camp do not actually conflict, as long as the dimensions
>> of the roadways can be calculated from something. But at some point it
>> WILL be necessary to actually draw the 'cultivatable area' and then the
>> extra elements make life a lot easier than trying to extract width and
>> side area information from tags on the single roadway.
> Judging by boundary data we now have available, the road way through
> national parks is allocated differently to the park it runs through,
> maybe because they are deemed public roads?

I think THAT is why the example came to mind ... Drawing a large scale 
view of the UK, the 'noise' added by some of the methods currently used 
to indicate larger areas of interest is a major distraction. And I've 
seen the same problems with some county and other 'administrative' areas 
as well. Perhaps we need to added and 'administrative' type boundary to 
areas such as national parks - so they can be drawn as a single entity?

Lester Caine - G8HFL
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