Add weights argument for cmp and zicmp

[sarahlotspeich]

No description provided.

[andrewraim]

It looks like vignette fails to build. (I am using the latest code on the master branch from https://github.com/sarahlotspeich/COMPoissonReg). I think the issue is related to the following snippet.

library(COMPoissonReg)
data(freight)

y = freight$broken
X = model.matrix(~ transfers, data = freight)
S = model.matrix(~ 1, data = freight)
offs = get.offset(x = rep(13, nrow(freight)), s = rep(1, nrow(freight)))
cmp.raw.out = glm.cmp.raw(y, X, S, offset = offs)

The output is:

Error in fit.zicmp.reg(y, X, S, W, init, offset, weights, fixed, control) :
  n == length(weights) is not TRUE

It looks like the default weights don't get set if the functions glm.cmp.raw and glm.zicmp.raw get called directly by the user.

You should be able to reproduce the error by running the snippet without building the vignette. But you want to try to build the vignette yourself, you can use the following command.

devtools::build_vignettes()