This is a method for the generic function
  plot for the class "kppm" of fitted
  cluster point process models.
  
  The argument x should be a cluster point process model
  (object of class "kppm") obtained using
  the function kppm.  By default, this command will first plot the fitted intensity of the model,
  using plot.ppm, and then plot the empirical and fitted
  summary statistics, using plot.fv.
  The choice of plots (and the order in which they are
  displayed) is controlled by the argument what.
  The options (partially matched) are "intensity" and "statistic".
  The option what="intensity" will be ignored if the
  model is stationary.