Jay Douillard wrote:
> I've added a page to the trac wiki around this topic
> 
> http://trac.mapnik.org/wiki/ScaleAndPpi
> 
> Please consider it a first draft!

Good start.

What I'd like to see is a little description of how you describe the 
size of things. The geo-data itself should get scaled appropriately but 
how do you specify the width of lines, size of text, etc? If you specify 
in pixels that's straightforward (but what is it for a scalable output, 
like pdf?) if you specify in inches, points, or mm, then you need to 
somewhere specify the PPI, or if it is indeed fixed at 96ppi, then you 
need to scale stuff yourself. What are the options with mapnik?



-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer

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