# 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

1 | ```
lengthahull(ahull.arcs)
``` |

### Arguments

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

### Details

The function `lengthahull`

is internally called by the function `ahull`

.

### Value

`length` |
Length of the boundary of the |

### See Also

`ahull`

.

### Examples

1 2 3 4 5 6 7 8 9 10 11 |