dirichletAreas {spatstat.geom}

Compute Areas of Tiles in Dirichlet Tessellation

Description

Calculates the area of each tile in the Dirichlet-Voronoi tessellation of a point pattern.

Usage

dirichletAreas(X)

Arguments

X

Point pattern (object of class "ppp").

Details

This is an efficient algorithm to calculate the areas of the tiles in the Dirichlet-Voronoi tessellation.

If the window of X is a binary pixel mask, the tile areas are computed by counting pixels. Otherwise the areas are computed exactly using analytic geometry.

If any points of X are duplicated, the duplicates will have tile area zero.

Value

Numeric vector with one entry for each point of X.

Author(s)

Adrian Baddeley [e-mail]

Rolf Turner [e-mail]

and Ege Rubak [e-mail]

See Also

dirichlet, dirichletVertices

Examples

 aa <- dirichletAreas(cells)