[OSM-dev] "Retina" tiles - best way to support them?

[Sven Geggus]

Frederik Ramm <frederik at remote.org> wrote:

> Your thoughts on these options - are there more than these three, 
> perhaps? - would be most welcome.

Hm, I consider this to be a renderer rather than a stylefile issue.

On Mapserver (which is unpopular in the OSM world for some reason)
there is are two options for this: RESOLUTION and DEFRESOLUTION.

Imagine you have a Style designed for desktop screens like most styles and
you want to go for a 200 DPI Output resolution you can simply put the
following into a mapfile:

RESOLUTION 200
DEFRESOLUTION 96 (defaults to 72)

http://mapserver.org/mapfile/symbology/construction.html#symbol-units

I think something like this should also be implemented in Mapnik, at least
in the long run.

Regards

Sven

-- 
"A strategy for rewarding artists that regulates 'copies' makes as much sense
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