fp_curve: Display the curve

In rCarto/fastpot: Compute Fast Potential

Description

Display the curve

Usage

fp_curve(fun = "e", span, beta, limit = span * 3)

Arguments

fun	spatial interaction function. Options are "p" (pareto, power law) or "e" (exponential). For pareto the interaction is defined as: (1 + alpha * mDistance) ^ (-beta). For "exponential" the interaction is defined as: exp(- alpha * mDistance ^ beta). The alpha parameter is computed from parameters given by the user (beta and span).
span	distance where the density of probability of the spatial interaction function equals 0.5.
beta	impedance factor for the spatial interaction function.
limit	maximum distance used to retrieved x points, in map units.

Value

a plot

Examples

fp_curve(fun = "e", span = 2000, beta = 2, limit = 4000)
fp_curve(fun = "p", span = 2000, beta = 2, limit = 20000)

rCarto/fastpot documentation built on Nov. 1, 2020, 7:02 a.m.