Hi Alejandro,
On May 25, 2009, at 3:53 AM, Alejandro Perea wrote:
> Hello everybody,
>
> First of all, sorry for my poor english.
>
> I'm rendering a map loading osm.xml, but I want to print over the
> map a track (route, or whatever). This route are in a GML file, so
> there is a way to do this?
>
Are you running mapnik 0.6.0 on mac or linux? If so you can use the
OGR driver (built it with INPUT_PLUGINS=all) to create and render the
GML file directly.
http://trac.mapnik.org/wiki/OGRThe OGR plugin is very similar to the other Mapnik datasource plugins
except that you need to supply the <layer> parameter. The name of OGR
Layers can be found by running the 'ogrinfo' tool on your GML file like:
$ ogrinfo <your_file.gml> -s0 -al
>
> I read that rendering maps follow the painter's algorithm. So, in
> case that I could print the route over the map, this code will be
> previos render(m,im) line?
>
Just put the xml to create this datasource at the bottom off your
osm.xml and it should render on top of your map.
Dane
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