Warren,

On May 17, 2009, at 9:26 AM, Warren Vick wrote:

> Hi Dane,
>
> There's two cases I have in mind:
>
> 1) I've noticed there are undesirable rendering artefacts with  
> adjoining polygons. It's common to see when region data is tiled.  
> I've played with using the outline style but that then limits the  
> use of opacity.
>

Yes, I've noticed this as well. Could you file a ticket on this?  It  
would be great if you could also provide a small test case (data +  
styles).

> 2) When the target is 8-bit images, I'd like only a single colour to  
> be used because it makes palette switching easier. With anti- 
> aliasing there are several shades as that colour transitions into  
> the background or other map features.

Yes, understandable. There is some relevant discussion here: 
https://trac.mapnik.org/ticket/202

Dane
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