7.3 Temporal Sampling
In the parameters we specify a list, with the temporal variable time
, the grouping variable with which the temporal sampling occurs group
, the between group variance (as a proportion) in sampling times variance
and the within group sample size n
:
<- simulate_population(
pop_data data_structure = make_structure("day(100) + individual(100)",repeat_obs=1),
parameters = list(
individual = list(
vcov = 0.1
),day=list(
covariate=TRUE,
beta=0.4
), residual = list(
vcov = 0.8
)
),
sample_type = "temporal",
sample_param = list(
time = c("day"),
group = c("individual"),
variance = c(0.1,0.2),
n=4),
)
<- get_sample_data(pop_data) sample_data