areadiff

0th

Percentile

Difference of Disc Areas

Computes the area of that part of a disc that is not covered by other discs.

Keywords
spatial, math
Usage
areadiff(u, X, r, ngrid=256)
Arguments
u
Coordinates of the centre of the disc. A vector of length 2.
X
Locations of the centres of other discs. A point pattern (object of class "ppp").
r
Disc radius.
ngrid
Dimensions of the ngrid * ngrid array of test points that will be used to estimate the uncovered area.
Details

This function computes the area of that part of the disc of radius r centred at the location u that is not covered by any of the discs of radius r centred at the points of the pattern X.

Value

  • A single number (the uncovered area)

See Also

AreaInter

Aliases
  • areadiff
Examples
data(cells)
   u <- c(0.5,0.5)
   areadiff(u, cells, 0.1)
Documentation reproduced from package spatstat, version 1.13-1, License: GPL (>= 2)

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