spatstat.model (version 3.3-1)

npfun: Dummy Function Returns Number of Points

Description

Returns a summary function which is constant with value equal to the number of points in the point pattern.

Usage

npfun(X, ..., r)

Value

Object of class "fv" representing a constant function.

Arguments

X

Point pattern.

...

Ignored.

r

Vector of values of the distance argument \(r\).

Author

Adrian Baddeley , Ege Rubak and Jesper Moller.

Details

This function is normally not called by the user. Instead it is passed as an argument to the function psst.

See Also

psst

Examples

  fit0 <- ppm(cells, ~1, nd=10)
  v <- psst(fit0, npfun)