euclideanPath: Compute Euclidean path coordinates from observed...

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

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

Description

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

Usage

euclideanPath(origin = 1, destination = NULL, type = "case-pump",
  vestry = FALSE, latlong = FALSE, case.set = "observed",
  location = "nominal", 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.
case.set	Character. "observed" or "expected".
location	Character. For cases and pumps. "nominal", "anchor" or "orthogonal".
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.

lindbrook/cholera documentation built on Jan. 13, 2025, 3:49 p.m.