[pomp-announce] pomp version 0.37-1 released

Aaron A. King kingaa at umich.edu
Sun May 15 18:55:29 CEST 2011


Dear pomp users,

I've just submitted version pomp 0.37-1 to CRAN.  Source code and binaries 
should become available on the mirrors over the next few days.  This is a 
feature upgrade.   For specific changes, see below (also the NEWS file):

     o  In the function 'pomp', the arguments 'skeleton.map' 
and 'skeleton.vectorfield' are now deprecated.  The new syntax has two 
arguments, 'skeleton' and 'skeleton.type'.  Specify a discrete-time skeleton 
using 'skeleton.type="map"' and a continuous-time skeleton 
via 'skeleton.type="vectorfield"'.

     o  'pomp' is now a generic function.   Calling it on a 'pomp' object 
copies the object; one can optionally modify some of the slots.

     o  Two new files 'gompertz.R' and 'gompertz.c' are in the 'examples' 
directory.  These contain codes needed to reproduce the Gompertz example in 
the 'intro_to_pomp' vignette.

     o  The warning messages to do with the default behaviors of 'simulate' 
and 'trajectory' with respect to the arguments 'times' and 't0' have been 
removed.   These warnings were introduced in version 0.34-1 to alert users to 
changes in the default behavior of 'simulate' and 'trajectory' introduced 
with that version.   See the help ("pomp?simulate", "pomp?trajectory") for 
details.

    o  It is now possible to save both the states and particles portions of 
the filtering distributions computed in 'pfilter'.  This is accomplished by 
means of the logical 'save.states' and 'save.params' arguments to 'pfilter'.  
The particles are stored in rank-3 arrays in the slots 'saved.states' 
and 'saved.params'.  This results in the need for a change in the structure 
of 'pfilterd.pomp' objects: note that 'pfilterd.pomp' objects 
(including 'mif' and 'pmcmc' objects) created under pre-0.37-1 version of the 
package will not load under versions >= 0.37-1.

Best regards,

Aaron

-- 
Aaron A. King, Ph.D.
Ecology & Evolutionary Biology
Mathematics
Center for the Study of Complex Systems
University of Michigan
GPG Public Key: 0x6E74F51B
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