R: Dummy Function Returns Number of Points

npfun {spatstat} | R Documentation

## 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)

### Arguments

`X` | Point pattern.
`...` | Ignored.
`r` | Vector of values of the distance argument r.

### Details

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

### Value

Object of class `"fv"` representing a constant function.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

Ege Rubak rubak@math.aau.dk and Jesper Moller.

### See Also

`psst`

### Examples

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

[Package spatstat version 1.54-0 Index]