Accessibility

cost_to_closest()

Minimum travel cost to closest N number of opportunities

cumulative_cutoff()

Cumulative access based on a travel cost cutoff

cumulative_interval()

Cumulative access based on maximum travel time interval

floating_catchment_area()

Floating catchment area accessibility

gravity()

Gravity-based accessibility measures

spatial_availability()

Spatial availability

balancing_cost()

Balancing cost accessibility measure

Decay functions

decay_binary()

Binary (a.k.a. step) decay function

decay_exponential()

Negative exponential decay function

decay_linear()

Linear decay function

decay_power()

Inverse power decay function

decay_stepped()

Stepped decay function

Inequality

palma_ratio()

Palma Ratio