twosfca: Processes the competition accessibility.
In biamouras/accSeg: Functions for my MSc analysis

Description Usage Arguments Value Author(s) References

View source: R/accessibility_functions.R

Process the 2 Step Floating Catchment Area or the Shen (1998) to process an accessibility with competition.

twosfca(
  oportunities,
  matrix,
  type = "2sfca",
  betas = NULL,
  cutoff = NULL,
  prestep = FALSE
)

`oportunities`	data frame with id, oportunity and population structure.
`matrix`	data frame with origin, destination and travel_time/distance structure.
`type`	string to choose between 2sfca and shen competition accessibilities. Defaults to 2sfca.
`betas`	numeric 'willing' decay factor. It must be defined when type "exponential" is chosen. Defaults to NULL.
`cutoff`	numeric threshold. It must be in the same unit of the matrix and it must be defined when type "gaussian" is chosen. Defaults to NULL.
`prestep`	logical parameter TRUE to process the prestep in 2SFCA that divides the population by the number of counts in the catchment area of the first step, FALSE otherwise. Defaults to FALSE.

data frame with origin and acc. If 2sfca type is chosen, adds the threshold column.

Beatriz Moura dos Santos

Shen (1998). Location characteristics of inner-city neighborhoods and employment accessibility of low-wage workers. Environment and planning B: Planning and Design, 25(3), 345-365.

Neutens (2015). Accessibility, equity and health care: review and research directions for transport geographers. Journal of Transport Geography, 43, 14-27.

RESOLUTION

biamouras/accSeg documentation built on Nov. 19, 2020, 8:07 a.m.