Description Usage Arguments Details Value Author(s) References Examples

This function estimates an animals home range using Local Convex Hulls (LoCoH).

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`xy` |
data.frame with two columns. The first column contains x coordinates and the second column contains y coordinates. |

`levels` |
a vector with isopleth levels at which home range should be calculated. |

`ud` |
a logical value, indicating whether or not a utilization distribution should be calculated. |

`cud` |
a logical value, indicating whether or not a cumulative utilization distribution should be calculated. |

`xrange` |
vector of length 2, with xmin and xmax for the UD |

`yrange` |
vector of length 2, with ymin and ymax for the UD |

`res` |
numeric value, the resolution of the ud. |

`type` |
character value, one of k, r, a. Three methods to select which neighbours are used for local hulls are availabe: i) k-nearest neighbours; ii) neighbours within a radius r; iii) neighbours within a cummulative dististance a. |

`n` |
numeric value, if type is k it is the number of neaerst neibhers, if type is r it is the radius that is searched and if type is a it is the cummulative distance to be used. |

`minPts` |
numeric value, the minimum number of neighbours required. |

Three different types available for determining the number of neighbors:

"k"uses the k nearest neighbours

"r"uses all neighbours within a radius r

"a"uses all neighbours that can be reached within a distance a. The distance to all points is calculated and then the cummulatively summed starting from the smallest until

`a`

is reached.

object of class `RhrHREstimator`

Johannes Signer

Getz, W. M., & Wilmers, C. C. (2004). A local nearest-neighbor convex-hull construction of home ranges and utilization distributions. _Ecography_, 27(4), 489-505.

Getz, W. M., Fortmann-Roe, S., Cross, P. C., Lyons, A. J., Ryan, S. J., & Wilmers, C. C. (2007). LoCoH: nonparameteric kernel methods for constructing home ranges and utilization distributions. _PloS one_, 2(2), e207.

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rhr documentation built on May 31, 2017, 4:26 a.m.

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