pomp version 5.10 has been released to CRAN and will soon appear on CRAN mirrors everywhere.
This release contains a change to the onestep rprocess simulator and some minor documentation improvements.
User-visible change
Suppose P is a ‘pomp’ object, with an rprocess component specified as onestep(f), where f is a C snippet or R function.
Suppose also that t==time(P,t0=TRUE).
In previous package versions, f would be executed to go from t[i] to t[i+1] if and only if t[i+1] > t[i].
As of version 5.9.1, f is executed exactly once even if t[i] == t[i+1].
If f is written correctly, this change will introduce no error.
However, if the user’s code assumes that the time-step t[i+1]-t[i] (furnished to f as delta.t if f is an R function and dt if it is a C snippet) is strictly positive, then this change may introduce errors.
Please contact me via the package Issues page if you notice a change in the behavior of your codes upon update to pomp version 5.10.
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This software has been made possible by support from the U.S. National Science Foundation (Grants #EF-0545276, #EF-0430120), by the “Inference for Mechanistic Models” Working Group supported by the National Center for Ecological Analysis and Synthesis (a Center funded by N.S.F. (Grant #DEB-0553768), the University of California, Santa Barbara, and the State of California), and by the RAPIDD program of the Science & Technology Directorate, Department of Homeland Security and the Fogarty International Center, U.S. National Institutes of Health. |