Aliases (Dependencies) in a Model - Generic function
DESCRIPTION:
Returns the alias pattern from an object or model.
This function is an S Version 3 generic (see Methods);
method functions can be written to handle specific
S Version 3 classes of data. Classes which already
have methods for this function include:
aovlist
,
design,
formula,
lm,
mlm.
USAGE:
alias(object, ...)
REQUIRED ARGUMENTS:
object
an object, such as a fitted linear model or analysis of variance.
OPTIONAL ARGUMENTS:
...
additional arguments suitable for the method that will be used.
VALUE:
an object, which represents the kinds of dependency
found in the terms of the model.
DETAILS:
The main method for aliasing is
alias.lm, defined for linear models
but applicable also to models inheriting from these (
glm and
gam, for
example).
This returns either the complete or partial aliasing information, or both.