Description Usage Arguments Details Value

Generate new tracks from a Crawl model

1 2 3 |

`model` |
a list with the transition and covariance matrices corresponding to the fitted movement model. |

`xs` |
the template sequence of states |

`ts` |
the times at which the track is sampled |

`fixed` |
a logical vector indicating which locations in the template path are to be held fixed. |

`point.check` |
function that accepts a state and returns boolean indicating whether the state is acceptable. |

`Verr` |
error covariance for fixed points. |

`partial` |
if |

Given a fitted crawl model and a template track, this function generates a new track of the same length that coincides with the template at the start point and optionally other specified points along the track.

The template track must be supplied as a matrix representing a
sequence of states where each row is a state and each column a
state variable. The states must be equispaced in time, and can be
generated as the "p" location types from `crwPredict`

.

The crawl model object is generated by `crawlModel`

from a
fitted crawl model.

Locations from the template track can be marked as fixed with the
`fixed`

argument. In the current implementation the first
location must always be fixed.

Additional constraints can be placed on the path by rejection
sampling through the function `point.check`

. This function
must accept a state and return a boolean indicating whether the
point is acceptable. For example, the track can be constrained to
the ocean by supplying a `point.check`

function that compares
the state to a land mask and returns `FALSE`

for states
corresponding to locations that fall on land.

An array of states the define the simulated path.

AustralianAntarcticDataCentre/availability documentation built on Nov. 28, 2018, 3:46 a.m.

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