
Figure 1a: Impedance functions for the gravitytype accessibility measures: Power function.


Figure 1b: Impedance functions for the gravitytype accessibility measures: Exponential function.


Figure 1c: Impedance functions for the gravitytype accessibility measures: Gaussian function.


Figure 1d: Various impedance functions compared.


Figure 2a: Accessibility surface of the gravitytype measure: POW 1.5.


Figure 2b: Accessibility surface of the gravitytype measure: EXP 0.45.


Figure 3a: Accessibility surface of the cumulativeopportunity measure: CUMR 20.


Figure 3b: Accessibility surface of the cumulativeopportunity measure: CUML 20.


Figure 4a: Accessibility surface of the spacetime measure: MHWA.


Figure 4b: Accessibility surface of the spacetime measure: FHWA.
