CHANGE LOG (incomplete)
* Version 2.1.9 (June 2014)
- Some administrative fixes for CRAN
* Version 2.1.8 (10 July 2013)
- Fixed an issue where ptweedie() would fail for very small y; set this to 0 when y<1.0e-300
(based on a report by Johann Cuenin)
* Version 2.1.7 (15 January 2013)
- Admin release (e.g. .First.lib() removed)
- Some minor edits to manual
* Version 2.1.6 (15 January 2013)
- Added the control input to tweedie.profile()
(thanks to Giri Khageswor, DPI Victoria)
- Minor fixes in the manual
* Version 2.1.5 (01 November 2012)
- Changed the example in tweedie-package to execute faster (CRAN requirement)
* Version 2.1.4 (31 October 2012)
- Fixed an error in dtweedie() that reported NA in the case when power=1 and phi!=1
(thanks to Dina Farkas)
* Version 2.1.3
- [dqpr]stable now in package stabledist rather then fBasics; fixed
- Fixed some typos in the help for tweedie-package (thanks to Peng Yu)
- rtweedie reported an error if power=1; fixed (thanks for Peng Yu)
* Version 2.1.2
- Edits to conform with new first argument of .Fortran (i.e. .NAME rather than name)
* Version 2.1.1
- Added NAMESPACE
* Version 2.1.0 (uploaded 09 June 2011)
- Changed tweedie,profile to ignore values of p/xi outside (1,2)
rather than report an error.
- In some unusual cases, when p/xi=0 was used (with add0=TRUE), the
mle of p was between 0 and 1 (which is impossible). We report a
warning message to check the data and the call to tweedie.profile(),
but then set the mle to the value of p/xi giving the larger value
of the likelihood
- Made the functions usually called by users able to accept xi or power
- A few minor edits to FORTRAN code; some variables not declared
* Version 2.0.8 (uploaded 08 June 2011)
- Minor fixes to documentation
- Fixed the add0 input
- Some minor changes to the code to tidy up adding the zero
- If values of xi/p are given between 0 and 1, or less than 0,
they are now omitted (with a message) rather than creating an error.
If there are no values left after omitting the problem value,
an error message is given.
* Version 2.0.7 (uploaded 30 September 2010)
- Ensured tweedie.profile does not use power=1. This case
(power=1 and phi not equal to 1) is too hard for me to deal with at present.
* Version 2.0.6 (uploaded 30 September 2010): Never released
- Fixed an error introduced in version 2.0.5, where the value of xi/vec/p.vec
was set to 1.2 (y>=0) or 1.5 (y>0) when not explictly specified
- Fixed an error that reported the wrong mle of phi when the mle
occured at an endpoint of the given xi values.
* Verson 2.0.5 (uploaded 26 August 2010)
- Change to dtweedie.inversion to ensure density=0 is returned
when y<0 (12)
- Change to tweedie.profile to fix a problem that p=1 returned an error
- Changed so that tweedie.profile works withg p/xi = 0 when add0=TRUE (default is FALSE)
- Fixed some minor outputting messages (when verbose==2)
- Location of CITATION file moved to correct location
* Verson 2.0.4 (uploaded 12 July 2010)
- Minor edits
* Verson 2.0.3 (uploaded 18 Dec 2009)
- Changed default p.vec: There were too many values
- Added the facility to refer to p as xi in line with GLMs text
* Version 2.0.1 (uploaded 17 Nov 2009)
- Changed the default p.vec when 1

)
* Version 1.6.7
- Correct error in rtweedie when power=1 and phi\ne 1
(Thanks to Frederic Gosselin )
* Version 1.6.6
- Corrected specification of GPL; no changes to functionality, code or documentation
* Version 1.6.5
- In dtweedie, added power==3 (inverse Gaussian) as a special case
- Minor change in documentation
* Version 1.6.4
- Added data, weights, and offset input arguments
- Fixed a bug where "=>" was used rather than ">="
* Version 1.6.3
- Fixed a bug in tweedie.profile: exact zeros still allowed p=2 (but not p>2)
* Version 1.6.2
- Fixed a bug in ptweedie.inversion where variable cdf was undefined
- Fixed a bug in qtweedie where any(power)<1 should have been any(power<1)
* Version 1.6.1
- Fixed error in tweedie.f (twice) where a float was used in a do-loop
* Version 1.6
- Fixed a bug in ptweedie: It now returns 0 when y<0 (rather than reporting an error)
- Fixed a bug in ptweedie.inversion: y.len was undefined
- Fixed a bug in dwteedie.inversion: if( any(phi<0) ) written as if (any(phi) <0 )
Built for R version 2.6.0
* Version 1.5.3:
- Changed the tweedie.plot to produce no default x and y labels
* Version 1.5.2:
Built for R version 2.5.1
- Removed the inversion computation from the example for dtweedie;
it was very slow and hence caused problems
* Version 1.5.1:
Built for R version 2.5.0
- Fixed citation details
- Added note in dtweedie help page indicating where the methods
are defined (Dunn and Smyth, 2007).
- Added tweedie-package.Rd
- Fixed a small bug in dtweedie.inversion (replaced p with power)
* Version 1.5: 2007/May/02
Built for R version 2.5
- Made change to use of pmatch in function tweedie
- Swapped the order of methods 1 and 2 in the call of
tweedie.inversion to make consistent with a change
in the associated paper Dunn and Smyth.
- Fixed an uninitialized variable error in the FORTRAN code
which sometimes caused the inversion procedure to fail.
- Other minor changes (fixing spelling errors, updated
Dunn and Smyth reference; etc.)
* Version 1.4: 2006/12/04
- Some very minor changes (some cosmetic) in the code
- Made the code more robust, exiting gracefully when Inf and NA appear
in the computed log-likelihood
- Slightly changed the output plot in tweedie.profile, to reflect
that some value of p.vec may not have a corresponding likelihood
computed accurately (or, indeed, at all)
- Added new function tweedie.plot to make it easier to plot Tweedie
densities
* Version 1.02: tweedie_1.02.tar.gz:
Built for R version 2.0.0
Major fix
- The mle estimate of phi was incorrect in tweedie.profile
(thanks Sarah Lennox, QDPI&F)
Minor changes:
- Some better warnings in tweedie.profile
New features
- tweedie.profile now allows the actual computed points to
be added to the plot using the do.points option (default
is TRUE)
- The tweedie.profile function now smooth and computes
confidence intervals even when the computed likelihood
values contain Infs or NAs.
* Version 1,01: tweedie_1.01.tar.gz:
Built for R version 1.9
Minor fixes:
- fixed a bug in rtweedie: it failed for p=2 (thanks
Sarah Lennox, QDPI&F)
- fixed a bug in qtweedie: it failed in some cases
(thanks Gordon Smyth, WEHI)
- added a proper .First.lib function (!) (thanks to
James Wettenhall and Gordon Smyth, WEHI)
- other minor bugs fixed
- the tweedie family function removed, and package
made dependent on the statmod package
- updated for R version 1.9
* Version 1.0: tweedie_1.0.tar.gz:
Built for R version 1.7