I am modifying an XML file dynamically in python as a string, and I load
the file with mapnik.load_map_from_string(...). Then, I would like to
change the datasource.
mapnik.load_map_from_string(m,mapfile)
for l in m.layers:
l.datasource = Osm(file='element2.osm')
save_map(m,'mapfile.xml')
The mapfile.xml take into account my new datasource 'element2.osm', but
mapnik.render(m, im) will render with my previous datasource (which is
called 'element.osm'.
The datasource is changed, but not taken into account. Any idea?
Yves
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