Radomir,
What you're describing sounds like this ticket:
http://trac.mapnik.org/ticket/180
It's been in Trac for some time, and I think there's some momentum
building to get it handled in an upcoming release. It's not there yet,
though.
-mike.
On May 24, 2009, at 3:37 PM, Radomir Cernoch wrote:
> Hello,
>
> I was looking through mapnik documentation for the following feature:
> A line is assigned 2 LineSymbolizers. I would like mapnik to paint
> them
> not one over another, but one next to the other. For example if a
> road,
> which normally looks like
>
> =====================
>
> is assigned colours 'Red' and 'Blue', the result would look like this:
>
> RRRRRRRRRRRRRRRRRRRRR
> =====================
> BBBBBBBBBBBBBBBBBBBBB
>
> However I couldn't find any clue about any similar feature on the
> mapnik.org. Could you tell me if I have overlooked something, please?
>
> The problem is that such thing cannot be done by pre-processig the
> data,
> since the distance between Red and Blue must be independent of zoom.
>
> The motivation is the traditional way of painting Czech tourist
> trails.
> The result should ideally look similar to:
> http://www.mapy.cz/#x=134865...@y=138622720@z...@mm=tttp
>
> Thank you in advance,
> Radek Cernoch
>
>
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>
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