The function mk_event_inhomogeneous_poisson is used to create an event with intensity type inhomogeneous Poisson (time dependent intensity which does not depend on population).
When the event occurs, something happens in the population.
The created event must be used with mk_model.
mk_event_inhomogeneous_poisson(type, name, intensity_code, kernel_code = "")Must be one of 'birth', 'death', 'entry', 'exit', 'swap' or 'custom'. See details.
(Optional) If not specified, the name given to the event is its type.
String containing some C++ code describing the intensity function. See details.
String containing some C++ code describing the event action. Optional for 'birth', 'death' and 'exit' events. See details.
An S3 object of class event of type inhomogeneous Poisson.
The type argument is one of the following
'birth'By default, a new individual newI is created, with the same characteristics of the parent I and birth date equal to the current time. Optional code can be precised in kernel_code.
'death'By default, the individual I dies. Optional code can be precised in kernel_code.
'entry'A new individual newI is added to the population, and its characteristics have to be defined by the user in the entry kernel_code.
'exit'An individual I exits from the population. Optional code can be precised in kernel_code.
'swap'The user can change the characteristics of the selected individual I. This requires kernel_code.
'custom'None of the above types, the user defines kernel_code that can act on the selected individual I and on the population pop.
The intensity_code argument is a string containing some C++ code describing the event intensity for individual I at time t. The intensity value must be stored in the variable result.
Some of available variables in the C++ code are: t (the current time), I (the current individual selected for the event), the name of the model parameters (some variables, or functions, see mk_model).
See vignette('IBMPopSim_Cpp') for more details.
The kernel_code argument is a string containing some C++ code which describing the action of the event. Some of available variables in the C++ code are: t (the current time), pop (the current population), I (the current individual selected for the event), newI (the new individual if 'birth' or 'entry' event), the name of the model parameters (some variables, or functions, see mk_model).
See vignette('IBMPopSim') for more details.