Routing operations

Name	Description	Example
accu()	…
accu_capacity()	…
accu_fraction()	…
accu_info()	…
accu_threshold()	…
accu_trigger()	…
d8_flow_direction()	Determine direction each cell drains towards	→
decreasing_order()	…
downstream()	…
downstream_distance()	…
first_n()	…
inflow_count()	…
kinematic_wave()	…
partial_accu()	…
upstream()	…