R: Intensity of a Multidimensional Space-Time Point Pattern

intensity.ppx {spatstat.geom} | R Documentation

## Intensity of a Multidimensional Space-Time Point Pattern

### Description

Calculates the intensity of points in a multi-dimensional point pattern of class `"ppx"` or `"pp3"`.

### Usage

      ## S3 method for class 'ppx'
    intensity(X, ...)

### Arguments

`X` | Point pattern of class `"ppx"` or `"pp3"`.
`...` | Ignored.

### Details

This is a method for the generic function `intensity`. It computes the empirical intensity of a multi-dimensional point pattern (object of class `"ppx"` including `"pp3"`), i.e. the average density of points per unit volume.

If the point pattern is multitype, the intensities of the different types are computed separately.

### Value

A single number or a numeric vector.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

Rolf Turner r.turner@auckland.ac.nz

and Ege Rubak rubak@math.aau.dk

### Examples

      X <- osteo$pts[[1]]
      intensity(X)
      marks(X) <- factor(sample(letters[1:3], npoints(X), replace=TRUE))
      intensity(X)

[Package spatstat.geom version 2.2-0 Index]