Daniel Werner wrote:
- its difficult with units. Layers can have different units like
degree, km, miles... I didn't look into how it works if markers with units are defined in display_marker if there are layers with different units. Perhaps we should allow coordinates with units like "20km,200m" to make it clear. This could also be included in layer pages so we can say "left-extend=20km" and stuff like that instead of having a "unit" attribute. There might me more simple solutions though, have not really looked into that yet.
ParserFunctions extension is able to convert between units, so you could accept mixed units and canonalize to your prefered one.