Affiliation network triads

These functions create and operate on triads in affiliation networks. In this context, a *triad* is the schedule of a subset of three distinct actors.

make_triad(lambda, w, actor_names = c("p", "q", "r"), event_names = if
  (sum(c(lambda, w)) == 0) c() else as.character(1:sum(c(lambda, w))))

is_triad(graph)

triad_class(graph, actors = V(graph)[V(graph)$type == FALSE],
  as.partition = TRUE, format = "list")

layout_triad(triad = NULL, lambda = NULL, w = NULL, scale = 0.3,
  angdir = -1, rot = -pi/2, rot_lambda = c(0, 0, 0), rot_w = pi/12)

plot_triad(triad = NULL, lambda = NULL, w = NULL, layout = NULL,
  prettify = TRUE, cex = 1, scale = 0.3, angdir = -1, rot = -pi/2,
  rot_lambda = c(0, 0, 0), rot_w = pi/12, actor_names = c("p", "q", "r"),
  event_names = if (sum(c(lambda, w)) == 0) c() else
  as.character(1:sum(c(lambda, w))), xlim = NULL, ylim = NULL, ...)

an_triad(...)

is.triad(graph)

triad.class(graph, actors = V(graph)[V(graph)$type == FALSE],
  as.partition = TRUE, format = "list")

an.triad(...)

layout.triad(triad = NULL, lambda = NULL, w = NULL, scale = 0.3,
  angdir = -1, rot = -pi/2, rot_lambda = c(0, 0, 0), rot_w = pi/12)

plotTriad(triad = NULL, lambda = NULL, w = NULL, layout = NULL,
  prettify = TRUE, cex = 1, scale = 0.3, angdir = -1, rot = -pi/2,
  rot_lambda = c(0, 0, 0), rot_w = pi/12, actor_names = c("p", "q", "r"),
  event_names = if (sum(c(lambda, w)) == 0) c() else
  as.character(1:sum(c(lambda, w))), xlim = NULL, ylim = NULL, ...)

Arguments

lambda	A non-negative integer vector of length three indicating the number of events attended by each pair of actors and not by the third (exclusive events).
w	A non-negative integer indicating the number of events attended by all three actors (inclusive events).
actor_names, event_names	Actor and event names (actor names default to "p", "q", and "r"; event names default to positive integers).
graph	An affiliation network, in some cases must be a triad.
actors	A vector of three actor nodes in `graph`.
as.partition	Whether to sort the exclusive events, versus reporting them in order of the nodes; defaults to `TRUE`.
format	Character matched to "list" or "vector"; whether to return the triad class as a list of \(\lambda=(x,y,z)\) and \(w\) or as a vector of \(w\), \(x=\lambda_1\), \(y=\lambda_2\), and \(z=\lambda_3\).
triad	An affiliation network with exactly three distinct actors.
scale	A scaling parameter for the entire plot.
angdir	A rotation direction parameter (`-1` for clockwise, `1` for counter-clockwise).
rot, rot_lambda, rot_w	Angular orientation parameters for the entire triad, for the exclusive events of two actors, and for the inclusive events of all three actors.
layout	A two-column numeric matrix interpretable as a `layout`.
prettify	Logical; whether to use `prettify_an` to adjust the aesthetics of a triad before plotting it.
cex	Node size scaling parameter.
xlim, ylim	Custom bounds on the horizontal and vertical axes.
...	Additional arguments passed to `plot.igraph`.

Arguments

Contents