heading | R Documentation |

Given a set of locations defining a trajectory, this function approximates their instantaneous headings computed as the direction of the vectors between successive locations along the trajectory.

heading(x, y, geo = FALSE)

`x` |
A vector of x (or longitude) coordinates corresponding to a single trajectory. |

`y` |
A vector of y (or latitude) coordinates corresponding to a single trajectory. |

`geo` |
A logical value indicating whether the locations are defined by geographic coordinates (pairs of longitude/latitude values). Default: FALSE. |

A vector of the same length as x and y corresponding to the approximated headings along the trajectory.

Simon Garnier, garnier@njit.edu

`ang_speed`

, `ang_acc`

x <- rnorm(25) y <- rnorm(25, sd = 3) heading(x, y)

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