is_chull | R Documentation |

Given a set of locations, this function determines which locations belongs to the convex hull (or envelope) of the set.

is_chull(x, y) isChull(x, y)

`x` |
A vector of x (or longitude) coordinates. |

`y` |
A vector of y (or latitude) coordinates. |

A numerical vector of the same length as `x`

and `y`

.
`0`

indicates that the corresponding location is not part of the convex
hull of the set. Values `>0`

indicates that the corresponding location
is part of the convex hull, and each value corresponds to the order of the
locations along the convex hull polygon.

Simon Garnier, garnier@njit.edu

`chull_area`

, `chull_perimeter`

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

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