summary.earth {earth} | R Documentation |
Summary method for 'earth' objects
Description
Summary method for 'earth' objects.
Usage
## S3 method for class 'earth':
summary(object = stop("no 'object' arg"),
digits = getOption("digits"), ...)
## S3 method for class 'summary.earth':
print(x = stop("no 'x' arg"), digits, ...)
Arguments
object |
An earth object.
This is the only required argument for summary.earth .
|
x |
A summary.earth object.
This is the only required argument for print.summary.earth .
|
digits |
The number of significant digits.
For summary.earth the default is getOption("digits") .
For print.summary.earth the default is the $digits component of object .
|
... |
Extra arguments are passed to format.earth .
|
Value
The value is the same as that returned by earth
but with the following extra components.
string |
String created by format.earth .
For multiple response models, a vector of strings.
|
digits |
The digits argument, passed on to print.summary.earth .
|
See Also
earth
,
format.earth
Examples
a <- earth(Volume~ ., data = trees)
summary(a, digits = 2)
# yields:
# Call:
# earth(formula = Volume ~ ., data = trees)
#
# Expression:
# 23
# + 5.7 * pmax(0, Girth - 13)
# - 2.9 * pmax(0, 13 - Girth)
# + 0.72 * pmax(0, Height - 76)
#
# Number of cases: 31
# Selected 4 of 5 terms, and 2 of 2 predictors
# Number of terms at each degree of interaction: 1 3 (additive model)
# GCV: 11 RSS: 213 GRSq: 0.96 RSq: 0.97
[Package
earth version 1.0-8
Index]