spatstat (version 1.31-3)

plot.influence.ppm: Plot Influence Measure

Description

Plots an influence measure that has been computed by influence.ppm.

Usage

## S3 method for class 'influence.ppm':
plot(x, ...)

Arguments

x

Influence measure (object of class "influence.ppm") computed by influence.ppm.

...

Arguments passed to plot.ppp to control the plotting.

Value

• None.

Details

This is the plot method for objects of class "influence.ppm". These objects are computed by the command influence.ppm.

The display shows circles centred at the data points with radii proportional to the influence values.

References

Baddeley, A. and Chang, Y.M. and Song, Y. (2011) Leverage and influence diagnostics for spatial point process models. Scandinavian Journal of Statistics, in press.

See Also

influence.ppm

Examples

X <- rpoispp(function(x,y) { exp(3+3*x) })
   fit <- ppm(X, ~x+y)
   plot(influence(fit))