distances {aspace}

Multiple Euclidean distance calculator

Description

Compute distances from a source location (point) to a series of destination locations (points).

Usage

distances(centre.xy = NULL, destmat = NULL, verbose = FALSE)

Arguments

centre.xy

Two-element vector containing x,y coordinates of the source location

destmat

Two-column matrix or data frame containing x,y coordinates of the activity locations

verbose

Boolean: Set to T if verbose output is desired

Details

Distance computations are strictly Euclidean between the source point and each destination point.

Value

A vector of distances, where each element corresponds to one of the distance between the source point and a destination (one row) from the destinations matrix.

Note

The order of distances in the output vector corresponds to the order of destination points in the destinations object starting at row = 1 through row = n.

Author(s)

Tarmo K. Remmel

Examples

  data(centre)
  data(activities)
  distances(centre.xy=centre, destmat=activities, verbose=FALSE)