distmap.lpp {spatstat.linnet}

R Documentation

Distance Map of Point Pattern on Linear Network

Description

Computes the distance from each pixel to the nearest point in the given point pattern on a linear network.

Usage

  ## S3 method for class 'lpp'
distmap(X, ..., k=1)

Arguments

X	A point pattern on a linear network (object of class "lpp").
k	Integer. The distance to the k-th nearest data point will be computed.
...	Arguments passed to as.linim.linfun to control pixel resolution.

Details

This is a method for the generic function distmap. It computes the distance map of the point pattern X as a pixel image on the network.

At a pixel u, the greyscale value equals the distance from u to the nearest point of the pattern X (or the k-th nearest point of X).

Value

A pixel image on the network (object of class "linim") whose greyscale values are the values of the distance map.

Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.

See Also

Generic function distmap and methods.

Examples

  plot(distmap(spiders))

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