wigglyOcc {AHMbook} | R Documentation |

## Simulate static occupancy data

### Description

Function to generate a static occupancy data set with really wiggly covariate relationships in occupancy and detection probability.

To recreate the data sets used in the book with R 3.6.0 or later, include `sample.kind="Rounding"`

in the call to `set.seed`

. This should only be used for reproduction of old results.

### Usage

```
wigglyOcc(seed = 1, show.plot = TRUE, verbose = TRUE)
```

### Arguments

`seed` |
Seed for random number generator |

`show.plot` |
choose whether to show plots or not. Set to FALSE when using function in simulations. |

`verbose` |
if TRUE, output will be written to the console. |

### Value

A list with the following elements:

`M` |
Number of sites |

`J` |
Number of replicate surveys |

`Xsite` |
Simulated site covariate, a vector of length M |

`Xsurvey` |
Simulated survey covariate, a M x J matrix |

`psi` |
Occupancy probability, a vector of length M |

`z` |
Realized occupancy, a 0/1 vector of length M |

`p` |
Detection probability, a M x J matrix |

`y` |
detection history, a M x J matrix of 0/1 |

### Author(s)

Marc Kéry & Andy Royle

### References

Kéry, M. & Royle, J.A. (2016) *Applied Hierarchical Modeling in Ecology* AHM1 - 10.14.

### Examples

```
# Generate data with the default arguments and look at the structure:
tmp <- wigglyOcc()
str(tmp)
```

*AHMbook*version 0.2.9 Index]