cholera: Amend, Augment and Aid Analysis of John Snow's Cholera Map

euclideanPathB

R Documentation

Compute Euclidean path coordinates from case/landmark to nearest/selected pump.

Description

Compute Euclidean path coordinates from case/landmark to nearest/selected pump.

Usage

euclideanPathB(origin = 1, destination = NULL, type = "case-pump",
  vestry = FALSE, latlong = FALSE, weighted = TRUE,
  distance.unit = "meter", time.unit = "second", walking.speed = 5,
  include.landmarks = TRUE)

Arguments

`origin`	Numeric. Vector of origin(s) (numeric ID or character name landmark/pump ).
`destination`	Numeric. Vector of destination(s) (numeric or landmark/pump name).
`type`	Character. Path case to pump. FALSE is all other combinations of cases, landmarks and pumps.
`vestry`	Logical. `TRUE` uses the 14 pumps from the map in the Vestry Report. `FALSE` uses the 13 pumps from the original map.
`latlong`	Logical.
`weighted`	Logical. `TRUE` computes shortest path in terms of road length. `FALSE` computes shortest path in terms of the number of nodes.
`distance.unit`	Character. Unit of distance: "meter" or "yard".
`time.unit`	Character. "hour", "minute", or "second".
`walking.speed`	Numeric. Walking speed in km/hr.
`include.landmarks`	Logical. Include landmarks as cases.