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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_logistic()
Logistic decay function
decay_power()
Inverse power decay function
decay_stepped()
Stepped decay function

Inequality

concentration_index()
Concentration Index
gini_index()
Gini Index
palma_ratio()
Palma Ratio
theil_t()
Theil T Index

Poverty

fgt_poverty()
Foster-Greer-Thorbecke (FGT) poverty measures