Description Usage Arguments Details Value Author(s) See Also Examples

Generate a random point pattern, a simulated realisation of the \Matern Model II inhibition process.

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`kappa` |
Intensity of the Poisson process of proposal points. A single positive number. |

`r` |
Inhibition distance. |

`win` |
Window in which to simulate the pattern.
An object of class |

`stationary` |
Logical. Whether to start with a stationary process of proposal points
( |

`...` |
Ignored. |

`nsim` |
Number of simulated realisations to be generated. |

`drop` |
Logical. If |

This algorithm generates one or more realisations
of \Matern's Model II
inhibition process inside the window `win`

.

The process is constructed by first
generating a uniform Poisson point process of “proposal” points
with intensity `kappa`

. If `stationary = TRUE`

(the
default), the proposal points are generated in a window larger than
`win`

that effectively means the proposals are stationary.
If `stationary=FALSE`

then the proposal points are
only generated inside the window `win`

.

Then each proposal point is marked by an “arrival time”, a number
uniformly distributed in *[0,1]* independently of other variables.

A proposal point is deleted if it lies within `r`

units' distance
of another proposal point *that has an earlier arrival time*.
Otherwise it is retained.
The retained points constitute \Matern's Model II.

The difference between \Matern's Model I and II is the italicised statement above. Model II has a higher intensity for the same parameter values.

A point pattern
if `nsim=1`

, or a list of point patterns if `nsim > 1`

.
Each point pattern is normally an object of class `"ppp"`

,
but may be of class `"pp3"`

or `"ppx"`

depending on the window.

, Ute Hahn, \rolf

and \ege

1 2 |

```
Loading required package: spatstat.data
Loading required package: nlme
Loading required package: rpart
spatstat 1.59-0 (nickname: 'J'ai omis les oeufs de caille')
For an introduction to spatstat, type 'beginner'
Note: R version 3.4.4 (2018-03-15) is more than 9 months old; we strongly recommend upgrading to the latest version
```

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