add_vertices {tergmLite} | R Documentation |
Fast Version of network::add.vertices for Edgelist-formated Network
Description
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.
Usage
add_vertices(el, nv)
Arguments
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. |
Details
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).
Value
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
.
Examples
## 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)
[Package tergmLite version 2.6.1 Index]