R: Convert Data on a Network to class owin

as.owin.lpp {spatstat.linnet} | R Documentation

## Convert Data on a Network to class owin

### Description

Converts data on a linear network into an object of class `"owin"`.

### Usage

     ## S3 method for class 'lpp'
    as.owin(W, ..., fatal=TRUE)

     ## S3 method for class 'lppm'
    as.owin(W, ..., fatal=TRUE)

### Arguments

`W` | Data specifying an observation window, in any of several formats described under Details below.
`fatal` | Logical value determining what to do if the data cannot be converted to an observation window. See Details.
`...` | Ignored.

### Details

The class `"owin"` is a way of specifying the observation window for a point pattern. See `owin.object` for an overview.

The function `as.owin` converts data in any of several formats into an object of class `"owin"` for use by the spatstat package. The function `as.owin` is generic, with methods for different classes of objects, and a default method.

A long list of methods for `as.owin` is documented in the help file for `as.owin` in the spatstat.geom package.

This help file documents additional methods applicable when `W` is

- an object of class `"lpp"` representing a point pattern on a linear network. In this case, `as.owin` extracts the linear network and returns a window containing this network.

- an object of class `"lppm"` representing a fitted point process model on a linear network. In this case, `as.owin` extracts the linear network and returns a window containing this network.

If the argument `W` cannot be converted to a window, then an error will be generated (if `fatal=TRUE`) or a value of `NULL` will be returned (if `fatal=FALSE`).

### 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

`as.owin`, `owin.object`, `owin`.

Additional methods for `as.owin` are provided in the maptools package: `as.owin.SpatialPolygon`, `as.owin.SpatialPolygons`, `as.owin.SpatialPolygonsDataFrame`.

### Examples

      as.owin(simplenet)

[Package spatstat.linnet version 2.3-1 Index]