The current release contains two breaking changes over pomp versions 5.11.X.X.
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With version 5.8.4, the manner in which one supplies extra model elements (the so-called
userdata, elements other than parameters, state variables, observations, and covariates that are available to the basic model components) was changed. The old way of doing things remained available, but using it generated a warning message, with the promise that the warning would someday become an error. That day has come. As of version 6, to supply userdata to the basic model components, one must explicitly use theuserdataargument in pomp constructors, elementary algorithms, or inference algorithms. Users who have already adjusted their codes to eliminate the aforementioned warning should experience no change in pomp behavior. -
While it has always been good practice in pomp function calls to pass arguments by name (as opposed to by position), with version 6.0.1, this becomes (almost) mandatory. This is meant to prevent a class of difficult-to-trace errors in which an unnamed argument is passed to a lower-level function and potentially ignored, silently. The chief exception to this rule is the first argument in many pomp functions, which is typically a pomp object or a data frame. Users who are in the habit of passing named arguments will not notice any change in pomp behavior.
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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. |