R: Length of the boundary of the alpha-convex hull

lengthahull {alphahull} | R Documentation

## Length of the boundary of the alpha-convex hull

### Description

This function calculates the length of the boundary of the α-convex hull of a given sample.

### Usage

    lengthahull(ahull.arcs)

### Arguments

`ahull.arcs` | Output matrix of arcs returned by `ahull`.

### Details

The function `lengthahull` is internally called by the function `ahull`.

### Value

`length` | Length of the boundary of the α-convex hull.

### See Also

`ahull`.

### Examples

    ## Not run:
    # Random sample in the unit square
    x <- matrix(runif(100), nc = 2)
    # Value of alpha
    alpha <- 0.2
    # alpha-convex hull
    ahull.obj <- ahull(x, alpha = alpha)
    # Length of the alpha-convex hull
    ahull.obj$length

    ## End(Not run)

[Package alphahull version 2.2 Index]