As far as I can see, nobody reads in Centroids on their own. Reading/creating centroids is always part of reading in Hazard data (...or is it?). Therefore, I see no reason why we should keep from_ classmethods in Centroids that are not used anywhere else. I compiled a list of these methods. The following classmethods are only called by tests, and not by any other code in either Climada Core or Petals:

• climada_python/climada/hazard/centroids/centr.py

  Line 244 in e26f900

  def from_geodataframe(cls, gdf, geometry_alias='geom'):

• climada_python/climada/hazard/centroids/centr.py

  Line 303 in e26f900

  def from_pix_bounds(cls, xf_lat, xo_lon, d_lat, d_lon, n_lat, n_lon, crs=DEF_CRS):

Can we remove them?