R: Distance Map Using Rectangular Distance Metric

rectdistmap {spatstat} | R Documentation

## Distance Map Using Rectangular Distance Metric

### Description

Computes the distance map of a spatial region based on the rectangular distance metric.

### Usage

    rectdistmap(X, asp = 1, npasses=1, verbose=FALSE)

### Arguments

`X` | A window (object of class `"owin"`).
`asp` | Aspect ratio for the metric. See Details.
`npasses` | Experimental.
`verbose` | Logical value indicating whether to print trace information.

### Details

This function computes the distance map of the spatial region `X` using the rectangular distance metric with aspect ratio `asp`. This metric is defined so that the set of all points lying at most 1 unit away from the origin (according to the metric) form a rectangle of width 1 and height `asp`.

### Value

A pixel image (object of class `"im"`).

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

### See Also

`distmap`

### Examples

      V <- letterR
      Frame(V) <- grow.rectangle(Frame(V), 0.5)
      plot(rectdistmap(V))

[Package spatstat version 1.63-3 Index]