Major changes since 0.9.0:
o A companion package, called \pkg{VGAMdata}, is new.
Some large data sets previously in \pkg{VGAM} have
been shifted there, e.g., xs.nz and ugss.
In \pkg{VGAMdata} there is (new) oly12 and students.tw.
o pnorm2() argument names have changed from 'sd1' to
'var1', etc. and 'rho' to 'cov12'.
See documentation.
Warning given if it returns any negative value.
o Introduction of g-type arguments for grid search.
o Improved initial values for: lomax().
o Argument 'bred' works for poissonff().
o latvar() generic available, identical to lv(). But the
latter will be withdrawn soon.
o Rank() generic available for RR-VGLMs, QRR-VGLMs, CAO models.
o New function: pgamma.deriv(), pgamma.deriv.unscaled(),
vlm2lm.model.matrix().
o New VGAM family functions:
posbernoulli.b(), posbernoulli.t(), posbernoulli.tb(tau = 2 or 3).
These provide estimates of N as well as its standard error.
Also, truncgeometric() and truncweibull() are new.
Also, SUR() is new.
Also, binom2.rho.ss() does not work yet.
o New argument 'matrix.out = FALSE' for constraints.vlm().
o cm.vgam() has a few more arguments to provide more flexibility.
But there should be no changes for VGAM users at this stage.
o Renamed functions: confint_rrnb() is now renamed to
Confint.rrnb() and confint_nb1() is now renamed to Confint.nb1().
o Some changes to component names returned by Confint.rrnb() and
Confint.nb1(): $CI. and $SE. are uppercase.
o Some zero-inflated VGAM family functions return a
"vglm" object with @misc$pstr0 for the estimated
probability of a structural zero.
o New data set: olym12.
Note that Students.tw is earmarked for \pkg{VGAMdata}.
o Data sets renamed:
olympic renamed to olym08.
o Qvar() has a 'which.eta = 1' argument specifying which linear
predictor to use. So quasi-variances are now
available to models with M > 1 linear predictors.
o Tested okay on R 3.0.0.
c5fd0236ab