coef.lmList
Extract lmList Coefficients
Description
The coefficients of each lm
object in the object
list are extracted and organized into a data frame, with rows corresponding to the lm
components and columns corresponding to the coefficients. Optionally, the returned data frame may be augmented with covariates summarized over the groups associated with the lm
components.
Usage
## S3 method for class 'lmList' coef(object, augFrame, data, which, FUN, omitGroupingFactor, ...)
Arguments
object | an object inheriting from class |
augFrame | an optional logical value. If |
data | an optional data frame with the variables to be used for augmenting the returned data frame when |
which | an optional positive integer or character vector specifying which columns of the data frame used to produce |
FUN | an optional summary function or a list of summary functions to be applied to group-varying variables, when collapsing the data by groups. Group-invariant variables are always summarized by the unique value that they assume within that group. If |
omitGroupingFactor | an optional logical value. When |
... | some methods for this generic require additional arguments. None are used in this method. |
Value
a data frame inheriting from class "coef.lmList"
with the estimated coefficients for each "lm"
component of object
and, optionally, other covariates summarized over the groups corresponding to the "lm"
components. The returned object also inherits from classes "ranef.lmList"
and "data.frame"
.
Author(s)
José Pinheiro and Douglas Bates [email protected]
References
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York, esp. pp. 457-458.
See Also
lmList
, fixed.effects.lmList
, ranef.lmList
, plot.ranef.lmList
, gsummary
Examples
fm1 <- lmList(distance ~ age|Subject, data = Orthodont) coef(fm1) coef(fm1, augFrame = TRUE)
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.