fitted model object of class
tree.
This is assumed to be the result of some function that produces
an object with the same named
components as that returned by the
tree function.
OPTIONAL ARGUMENTS:
ortho
Logical. If
TRUE, basis vectors will be normalized to have unit length.
If
FALSE (default), basis vectors are orthogonal but not orthonormal.
VALUE:
One basis vector for each split, and one for the root node.
SEE ALSO:
.
EXAMPLES:
z.auto <- tree(Mileage ~ Weight, car.test.frame)
x <- basis.tree(z.auto)
z <- lm(y~x) # represent tree as a fitted linear model object