On 17/09/2014 13:04, Martin Koppenhoefer wrote:
2014-09-17 10:43 GMT+02:00 Dave F. <dave...@madasafish.com
<mailto:dave...@madasafish.com>>:
On 16/09/2014 14:59, Martin Koppenhoefer wrote:
2014-09-16 15:32 GMT+02:00 Dave F. <dave...@madasafish.com
<mailto:dave...@madasafish.com>>:
I find it surprising something as arbitrary as size is used
as the defining factor. Comparing actual tags would surely
make more sense.
well, size surely has some correlation with importance. For
practical reasons it is generally working quite well to have
first render the bigger stuff and then render the smaller stuff
on top, because it leads typically to less covering.
This, IMO, is lazy rendering & should be discouraged. To allow the
smaller stuff to display is one of the reason mutli-polygons were
developed.
no, multipolygons have nothing to do with this issue. Multipolygons
are there to cut holes into polygons or to build polygons from outer
ways which are also otherwise used. Here they would not serve at all,
as the park and the wood both occupy the same area (locally).
True, for this case, but I was talking in more general terms.
Refer also to the layer tag which is disappointingly under used by
renderers.
yes, it is indeed underused, but it also has nothing to do with the
issue here, as both objects are on the same layer.
That's my point. If the layer tagged was implemented by more renderers
it would encourage mappers to use it, solving my current problem.
In this particular case more detailed mapping of the tree areas
could solve it, e.g. split the wood object at the cutting roads
and waterways, but admittedly in this case by looking at the bing
aerial imagery it seems indeed to be a continuity of trees on
both sides of these.
That's mapping incorrectly to suit the renderer &, for obvious
reasons, should be criticized.
how would splitting an area be incorrect? It is just another
representation of the same. There are infinite correct ways to
representate the same object.
As an example: If it has a name you'd have two objects of that name,
when in fact there's only one. If someone wanted to find out how many
named wood there are in a city it would return inaccurate data.
cheers,
Martin
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