Description Usage Arguments Details Value Author(s) Examples

View source: R/mkdeFunctions.R

This function sets up the movement data for use in other functions in the package.

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`t.obs` |
A vector of times at which the animal locations were observed |

`x.obs` |
A vector of x-coordinates at which the animal locations were observed |

`y.obs` |
A vector of y-coordinates at which the animal locations were observed |

`z.obs` |
A vector of z-coordinates at which the animal locations were observed |

`sig2obs` |
Location error variance in the xy-dimensions |

`sig2obs.z` |
Location error variance in the z-dimension |

`t.max` |
The maximum time allowed between locations if the movement step is to be used in computing the density |

If only 2D or 2.5D MKDEs are to be calculated, then z.obs and sig2obs.z do not have to be provided.

A move data object, in the form of a list, is returned.

`dimension` |
The spatial dimension of the movement data. If z-coordinates are passed, the dimension will be 3; otherwise, the dimension will be 2. |

`t.obs` |
Times of the animal locations. |

`x.obs` |
x-coordinates of the animal locations. |

`y.obs` |
y-coordinates of the animal locations. |

`z.obs` |
z-coordinates of the animal locations. |

`a.obs` |
Altitude of the animal; that is, its z-coordinate minus the lower bound on the z-coordinate at the corresponding xy-coordinates of the animal location. |

`use.obs` |
A logical array that indicates whether each location should be used in the MKDE calculations. By default these values are set to TRUE. |

`t.max` |
The maximum time allowed between locations if the movement step is to be used in computing the density |

`sig2xy` |
A vector of movemenet variance paramters for the xy-dimensions, with NAs as placeholders. The functions estVarMKDE is provided to estimate these parameters, or they can be set manually to allow for different movement variances for each move step. |

`sig2z` |
A vector of movemenet variance paramters for the z-dimension, with NAs as placeholders. The functions estVarMKDE is provided to estimate these parameters, or they can be set manually to allow for different movement variances for each move step. |

`sig2obs` |
A vector of variances for the location observation error in the xy-dimensions. If only one value is provided for the variance parameters, the value is repeated to form a vector with one element for each location. Otherwise, a vector of location error variances can be passed to allow for different errors for each observed location. |

`sig2obs.z` |
A vector of variances for the location observation error in the z-dimension. If only one value is provided for the variance parameters, the value is repeated to form a vector with one element for each location. Otherwise, a vector of location error variances can be passed to allow for different errors for each observed location. |

Jeff A. Tracey, PhD

USGS Western Ecological Research Center, San Diego Field Station

[email protected]

James Sheppard, PhD

San Diego Zoo Institute for Conservation Research

[email protected]

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mkde documentation built on May 2, 2019, 6:46 a.m.

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