print.rpart              package:rpart              R Documentation

Print an Rpart Object

Description:

     This function prints an 'rpart' object.  It is a method for the
     generic  function 'print' of class 'rpart'.

Usage:

     ## S3 method for class 'rpart':
     print(x, minlength=0, spaces=2, cp, digits= getOption("digits"), ...)

Arguments:

       x: fitted model object of class 'rpart'.  This is assumed to be
          the result  of some function that produces an object with the
          same named  components as that returned by the 'rpart'
          function.  

minlength: Controls the abbreviation of labels: see 'labels.rpart'. 

  spaces: the number of spaces to indent nodes of increasing depth.  

  digits: the number of digits of numbers to print.  

      cp: prune all nodes with a complexity less than 'cp' from the
          printout. Ignored if unspecified. 

     ...: arguments to be passed to or from other methods. 

Details:

     This function is a method for the generic function 'print' for
     class  '"rpart"'.  It can be invoked by calling print for an
     object of the  appropriate class, or directly by calling
     'print.rpart' regardless of  the class of the object.

Side Effects:

     A semi-graphical layout of the contents of 'x$frame' is printed. 
     Indentation is used to convey the tree topology. Information for
     each node includes the node number, split, size, deviance, and
     fitted value.  For the '"class"' method, the class probabilties
     are also printed.

See Also:

     'print',  'rpart.object', 'summary.rpart',  'printcp'

Examples:

     data(car.test.frame)
     z.auto <- rpart(Mileage ~ Weight, car.test.frame)
     z.auto
     ## Not run: node), split, n, deviance, yval
           * denotes terminal node

      1) root 60 1354.58300 24.58333  
        2) Weight>=2567.5 45  361.20000 22.46667  
          4) Weight>=3087.5 22   61.31818 20.40909 *
          5) Weight<3087.5 23  117.65220 24.43478  
           10) Weight>=2747.5 15   60.40000 23.80000 *
           11) Weight<2747.5 8   39.87500 25.62500 *
        3) Weight<2567.5 15  186.93330 30.93333 *
     ## End(Not run)

