So far, HydPy does not define a standard way to specify the location of elements (e.g. models) and nodes (e.g. gauges). Some models (HydPy-L-Land, HydPy-Evap, and HydPy-Conv) define it in different ways.

We should select a standardised approach soon. Maybe, this approach should not only support point data but lines and polygons, too? However, we should prefer a simple implementation that does not rely on geo-libraries that are hard to install.