spatstat (version 1.45-2)

fardist: Farthest Distance to Boundary of Window

Description

Computes the farthest distance from each pixel, or each data point, to the boundary of the window.

Usage

fardist(X, ...)

## S3 method for class 'owin': fardist(X, \dots, squared=FALSE)

## S3 method for class 'ppp': fardist(X, \dots, squared=FALSE)

Arguments

X
A spatial object such as a window or point pattern.
...
Arguments passed to as.mask to determine the pixel resolution, if required.
squared
Logical. If TRUE, the squared distances will be returned.

Value

  • For fardist.owin, a pixel image (object of class "im").

    For fardist.ppp, a numeric vector.

Details

The function fardist is generic, with methods for the classes owin and ppp.

For a window W, the command fardist(W) returns a pixel image in which the value at each pixel is the largest distance from that pixel to the boundary of W.

For a point pattern X, with window W, the command fardist(X) returns a numeric vector with one entry for each point of X, giving the largest distance from that data point to the boundary of W.

Examples

Run this code
fardist(cells)

  plot(FR <- fardist(letterR))

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