R: Extract Window of Spatial Object

WindowOnly {spatstat.core} | R Documentation

## Extract Window of Spatial Object

### Description

Given a spatial object (such as a point pattern or pixel image) in two dimensions, these functions extract the window in which the object is defined.

### Usage

     ## S3 method for class 'ppm'
    Window(X, ..., from=c("points", "covariates"))

     ## S3 method for class 'kppm'
    Window(X, ..., from=c("points", "covariates"))

     ## S3 method for class 'dppm'
    Window(X, ..., from=c("points", "covariates"))

     ## S3 method for class 'msr'
    Window(X, ...)

     ## S3 method for class 'quadrattest'
    Window(X, ...)

     ## S3 method for class 'rmhmodel'
    Window(X, ...)

### Arguments

`X` | A spatial object.
`...` | Ignored.
`from` | Character string. See Details.

### Details

These are methods for the generic function `Window` which extract the spatial window in which the object `X` is defined. The argument `from` applies when `X` is a fitted two-dimensional point process model (object of class `"ppm"`, `"kppm"` or `"dppm"`). If `from="data"` (the default), `Window` extracts the window of the original point pattern data to which the model was fitted. If `from="covariates"` then `Window` returns the window in which the spatial covariates of the model were provided.

### Value

An object of class `"owin"` (see `owin.object`) specifying an observation window.

### 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

`Window`, `Window.ppp`, `Window.psp`.

`owin.object`

### Examples

       X <- quadratcount(cells, 4)
       Window(X)

[Package spatstat.core version 1.65-5 Index]