This function sets the initial disease status on the network given the specified initial conditions.
init_status.net(dat)The updated netsim_dat main list object.
Main netsim_dat object containing a networkDynamic
object and other initialization information passed from
netsim.
This internal function sets, either randomly or deterministically, the nodes
that are infected at \(t_1\), the starting time of network simulations. If
the number to be initially infected is passed, this function sets the initial
number infected based on the number specified, either as a set of random
draws from a binomial distribution or as the exact number specified. In
either case, the specific nodes infected are a random sample from the
network. In contrast, a set of specific nodes may be infected by passing a
vector containing the status of each node to netsim.
For the initially infected nodes, this module sets the time of infection as
\(t_1\), the starting time of network simulations. For models with vital
dynamics, the infection time for those initially infected nodes is a random
draw from an exponential distribution with the rate parameter defined by the
di.rate argument. For models without vital dynamics, the infection
time is a random draw from a uniform distribution of integers with a minimum
of 1 and a maximum of the number of time steps in the model. In both cases,
to set the infection times to be in the past, these times are multiplied by
-1, and 2 is added to allow for possible infection times up until step 2,
when the disease simulation time loop starts.
This is an initialization module for netsim.