Nothing
transition_example_a <- function() {
f <- function(x, y, a) a
environment(f) <- emptyenv()
transition(
from = "a",
to = "b",
transition_type = "probability",
mortality_type = NULL,
fun = new_transition_function(f),
predictors = list(
x = predictor_spec("temp"), y = predictor_spec("host_density")
),
parameters = parameters(a = 1)
)
}
transition_example_b <- function() {
b <- transition_example_a()
b$from <- "b"
b$to <- "a"
return(b)
}
life_cycle_example_a <- function() {
life_cycle(
transition_example_a(),
transition_example_b()
)
}
predictors_example_a <- function() {
predictors(data.frame(
pred = "temp",
pred_subcategory = NA,
j_day = NA,
value = 1
))
}
predictors_example_b <- function() {
predictors(data.frame(
pred = c("host_density", "temp"),
pred_subcategory = NA,
j_day = NA,
value = 1
))
}
# TODO there are also (old) example configs loaded with the package - need to
# think about what to put in data/ vs tests/helper.R
config_example_a <- function() {
config(
cycle = life_cycle_example_a(),
preds = predictors_example_b(),
initial_population = c(a = 1L, b = 0L),
steps = 10L,
max_duration = 365L,
verbose = FALSE
)
}
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