Save intermediate sums of states and parameters so that they can be used as factors in rate expressions and retured as part of the simulation history.
add_state_param_sum(model, sum_name, summands)flexmodel object
name of sum of state variables and parameters
character vector of regular expressions for identifying
state variables and parameters to sum together. See avail_for_sum
for a function that will return all names that these regular expressions
will search through.
updated flexmodel
Other flexmodel_definition_functions:
add_factr(),
add_linearized_outflow(),
add_parallel_accumulators(),
add_rate(),
add_state_mappings(),
initial_population(),
mat_rate(),
rep_rate(),
update_disease_free_state(),
update_linearized_params(),
update_tmb_indices(),
vec_rate()