spatstat (version 1.60-1)

rectdistmap: 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.

Value

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

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.

See Also

distmap

Examples

# NOT RUN {
  V <- letterR
  Frame(V) <- grow.rectangle(Frame(V), 0.5)
  plot(rectdistmap(V))
# }