Family Function Name
Extractor function for the name of the family function of an object in the VGAM package.
familyname(object, ...) familyname.vlm(object, all = FALSE, ...)
object |
Some VGAM object, for example, having
class |
all |
If |
... |
Other possible arguments for the future. |
Currently VGAM implements over 150 family functions.
This function returns the name of the function assigned
to the family
argument, for modelling
functions such as vglm
and vgam
.
Sometimes a slightly different answer is returned, e.g.,
propodds
really calls cumulative
with some arguments set, hence the output returned by
this function is "cumulative"
(note that one day
this might change, however).
A character string or vector.
Arguments used in the invocation are not included. Possibly this is something to be done in the future.
pneumo <- transform(pneumo, let = log(exposure.time)) fit1 <- vglm(cbind(normal, mild, severe) ~ let, cumulative(parallel = TRUE, reverse = TRUE), data = pneumo) familyname(fit1) familyname(fit1, all = TRUE) familyname(propodds()) # "cumulative"
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