Function deviation

deviation(
    data: number[],
    holeIndices?: number[],
    dim?: number,
    triangles?: number[],
): number
Parameters
- data: number[]
  either a 2D or 3D array
- holeIndices: number[] = []
  indices of the holes
- dim: number = 2
  number of dimensions
- triangles: number[] = []
  triangles to append to
Returns number
- the deviation