[OSM-talk] Wood & Park mapnik carto anomaly?

[Dave F.]

On 16/09/2014 14:59, Martin Koppenhoefer wrote:
>
> 2014-09-16 15:32 GMT+02:00 Dave F. <davefox at madasafish.com 
> <mailto:davefox at 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. Refer also to the layer tag which is disappointingly under 
used by renderers.

> 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.

Cheers
Dave F.


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