add_vertices | R Documentation |
This function performs a simple operation of updating the
edgelist attribute n
that tracks the total network
size implicit in an edgelist representation of the network.
add_vertices(el, nv)
el |
A two-column matrix of current edges (edgelist) with an attribute
variable |
nv |
A integer equal to the number of nodes to add to the network size at the given time step. |
This function is used in EpiModel
modules to add vertices (nodes) to the
edgelist object to account for entries into the population (e.g., births and
in-migration).
Returns the updated the attribute containing the population size on the
edgelist, el
, based on the number of new vertices specified to be
added in nv
.
## Not run: library("EpiModel") nw <- network_initialize(100) formation <- ~edges target.stats <- 50 coef.diss <- dissolution_coefs(dissolution = ~offset(edges), duration = 20) x <- netest(nw, formation, target.stats, coef.diss, verbose = FALSE) param <- param.net(inf.prob = 0.3) init <- init.net(i.num = 10) control <- control.net(type = "SI", nsteps = 100, nsims = 5, tergmLite = TRUE) # networkLite representation after initialization dat <- crosscheck.net(x, param, init, control) dat <- initialize.net(x, param, init, control) # Check current network size attributes(dat$el[[1]])$n # Add 10 vertices dat$el[[1]] <- add_vertices(dat$el[[1]], 10) # Check new network size attributes(dat$el[[1]])$n ## End(Not run)
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