On Jan 30, 2011, at 6:44 PM, Steve Bennett wrote:

> On Mon, Jan 31, 2011 at 1:16 PM, Daniel Sabo <[email protected]> wrote:
>> Right now Potlatch doesn't even render landuse multipolygons though, so 
>> there's not much incentive for people to click a button like that :).
>> 
>> I do appreciate that my pro-multipolygon perspective comes from working 
>> primarily with JOSM where they've gotten very easy to use, Potlatch users 
>> probably are as annoyed by working with my multipolygons as much as I am by 
>> their collinear ways.
> 
> I'd like to have a better understanding of support for multipolygons
> across different renderers and editors. For example, does mapnik
> support mp's on *all* tags, or is it case-by-case?

Mapnik renders multipolygons exactly the same way as it renders simple 
polygons, so all tags will work.

JOSM renders any area tags on multipolygons.
Potlatch 1 doesn't render areas on multipolygons, but it does highlight a way 
in blue when it's a member of a multipolygon.
Potlatch 2 doesn't give have any visual cues that I've seen for multipolygons.

> 
> I think I agree with your earlier point that mp's are better than
> colinear ways, but colinear ways are still better than parallel ways
> for areas that do actually touch.

Absolutely, it at least makes it something we can fix by clicking a button 
someday :).

> Steve


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