| rig {VGAM} | R Documentation |
Estimation of the parameters of a reciprocal inverse Gaussian distribution.
rig(lmu = "identity", llambda = "loge",
emu=list(), elambda=list(), imu = NULL, ilambda = 1)
lmu, llambda |
Link functions for mu and lambda.
See Links for more choices.
|
imu, ilambda |
Initial values for mu and lambda.
A NULL means a value is computed internally.
|
emu, elambda |
List. Extra argument for each of the links.
See earg in Links for general information.
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See Jorgensen (1997) for details.
An object of class "vglmff" (see vglmff-class).
The object is used by modelling functions such as vglm,
and vgam.
This distribution is potentially useful for dispersion modelling.
T. W. Yee
Jorgensen, B. (1997) The Theory of Dispersion Models. London: Chapman & Hall
y = rchisq(n=100, df=14) # Not 'proper' data!! fit = vglm(y ~ 1, rig, trace=TRUE) fit = vglm(y ~ 1, rig, trace=TRUE, eps=1e-9, cri="c") summary(fit)