def _get_topo_tile(self, k):
t = None
demname = None
for dem in self._dems[k]:
t = topo.get(dem, self._wesn)
demname = dem
if t is not None:
break
if not t:
raise NoTopo()
return t, demname
def _get_topo_tile(self, k):
t = None
demname = None
for dem in self._dems[k]:
t = topo.get(dem, self._wesn)
demname = dem
if t is not None:
break
if not t:
raise NoTopo()
return t, demname