Description Usage Arguments Details Value Methods (by class) Author(s) See Also Examples
getFix
extracts coefficients, their covariance matrix, and degrees of
freedom from a model object. Its main purpose is to extract information needed
by the wald
function. To extend the wald
function to a new class of
model objects, it is merely necessary to write a method for getFix
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | getFix(fit, ...)
## S3 method for class 'multinom'
getFix(fit, ...)
## S3 method for class 'lm'
getFix(fit, ...)
## S3 method for class 'glm'
getFix(fit, ...)
## S3 method for class 'lme'
getFix(fit, ...)
## S3 method for class 'gls'
getFix(fit, ...)
## S3 method for class 'merMod'
getFix(fit, ...)
## S3 method for class 'zeroinfl'
getFix(fit, ...)
## S3 method for class 'mipo'
getFix(fit, ...)
## S3 method for class 'MCMCglmm'
getFix(fit, ...)
## S3 method for class 'stanfit'
getFix(fit, pars, include = TRUE, ...)
## Default S3 method:
getFix(fit, ...)
|
fit |
A fitted model object |
pars |
For the |
include |
For the |
... |
Other arguments [unused] |
Extending the wald
function to a new class of objects only
requires a getFix
method for the new class.
Returns a list with the following components:
fixed
fixed effect parameter estimates
vcov
covariance matrix of the parameters
df
denominator degrees of freedom for each effect
multinom
: method for multinom
objects in package nnet
lm
: method for lm
objects
glm
: method for glm
objects
lme
: method for lme
objects in the nlme package
gls
: method for gls
objects in the nlme package
merMod
: method for merMod
objects in the lme4 package
zeroinfl
: method for zeroinfl
objects in the pscl package
mipo
: method for mipo
objects in the mice package
MCMCglmm
: method for MCMCglmm
objects in the MCMCglmm package
stanfit
: method for stanfit
objects in the rstan package
default
: prints an error message if getFix
is used for a class for which a method has not been written
Georges Monette
1 2 3 4 5 6 7 8 9 10 11 12 13 | mod.prestige <- lm(prestige ~ education + income, data=Prestige)
getFix(mod.prestige)
## Not run:
# Example of a getFix method for a glm object:
print(carEx:::getFix.glm)
# Example of a getFix method for a mipo object in the mice package:
print(carEx:::getFix.mipo)
## End(Not run)
|
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