[OSM-dev] Rendering transparent OSM maps using Mapnik

[Andrew Harvey]

On Fri, Feb 3, 2012 at 7:00 PM, Ciprian Talaba <cipriantalaba at gmail.com> wrote:
> Hi,
>
> I have a working installation of Mod_tile + Tirex + Mapnik rendering a
> small region. The next step was to create s simpler style without
> landuse and with transparent background in order to use this as an
> overlay. Currently osm.xml have a map background of #B5D0D0 (assuming
> that this is due to the fact that a lot of tiles contain water areas).
> The rendered tiles have instead a background of "#F1EEE8" so somewhere
> this is set, but a search in the original style (and any includes) led
> me to nothing.
>
> Have anyone tried to generate transparent tiles with Mapnik. I am
> missing something here?

I haven't done such by modifying osm.xml, but I have done transparent
tiles/stylesheet for OSM data using mapnik as an independent style.

example http://tianjara.net/osmt.html
stylesheet source https://github.com/andrewharvey/osm-hybrid-carto/