nparam.vlm {VGAM} | R Documentation |
Number of Parameters
Description
Returns the number of parameters in a fitted model object.
Usage
nparam(object, ...)
nparam.vlm(object, dpar = TRUE, ...)
nparam.vgam(object, dpar = TRUE, linear.only = FALSE, ...)
nparam.rrvglm(object, dpar = TRUE, ...)
nparam.drrvglm(object, dpar = TRUE, ...)
nparam.qrrvglm(object, dpar = TRUE, ...)
nparam.rrvgam(object, dpar = TRUE, ...)
Arguments
object |
Some VGAM object, for example, having
class |
... |
Other possible arguments fed into the function. |
dpar |
Logical, include any (estimated) dispersion parameters as a parameter? |
linear.only |
Logical, include only the number of linear (parametric) parameters? |
Details
The code was copied from the AIC()
methods functions.
Value
Returns a numeric value with the corresponding number of parameters.
For vgam
objects, this may be real rather than
integer, because the nonlinear degrees of freedom is real-valued.
Warning
This code has not been double-checked.
Author(s)
T. W. Yee.
See Also
VGLMs are described in vglm-class
;
VGAMs are described in vgam-class
;
RR-VGLMs are described in rrvglm-class
;
AICvlm
.
Examples
pneumo <- transform(pneumo, let = log(exposure.time))
(fit1 <- vglm(cbind(normal, mild, severe) ~ let, propodds, data = pneumo))
coef(fit1)
coef(fit1, matrix = TRUE)
nparam(fit1)
(fit2 <- vglm(hits ~ 1, poissonff, weights = ofreq, data = V1))
coef(fit2)
coef(fit2, matrix = TRUE)
nparam(fit2)
nparam(fit2, dpar = FALSE)
[Package VGAM version 1.1-11 Index]