One-truncated Logarithmic Distribution
Estimating the (single) parameter of the 1-truncated logarithmic distribution.
otlog(lshape = "logitlink", gshape = ppoints(8), zero = NULL)
lshape, gshape, zero |
Same as
|
The 1-truncated logarithmic distribution is a logarithmic distribution but with
the probability of a one being zero. The other probabilities are scaled
to add to unity.
Some more details can be found at logff.
Multiple responses are permitted.
An object of class "vglmff" (see vglmff-class).
The object is used by modelling functions such as vglm,
and vgam.
T. W. Yee
## Not run:
odata <- data.frame(y1 = rotlog(n = 1000, shape = logitlink(1/3, inverse = TRUE)))
ofit <- vglm(y1 ~ 1, otlog, data = odata, trace = TRUE, crit = "c")
coef(ofit, matrix = TRUE)
Coef(ofit)
with(odata,
hist(y1, shape = TRUE, breaks = seq(0.5, max(y1) + 0.5, by = 1),
border = "blue"))
x <- seq(1, with(odata, max(y1)), by = 1)
with(odata, lines(x, dotlog(x, Coef(ofit)[1]), col = "orange", type = "h", lwd = 2))
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