layout.forceatlas2: ForceAtlas2 layout

In analyxcompany/ForceAtlas2: ForceAtlas2 layout for a network

Description

ForceAtlas2 layout

Usage

layout.forceatlas2(graph, directed = TRUE, iterations = 100,
  linlog = FALSE, pos = NULL, nohubs = FALSE, k = 400, gravity = 1,
  ks = 0.1, ksmax = 10, delta = 1, center = NULL, tolerate = 0.1,
  dim = 2, plotstep = 10, plotlabels = TRUE)

Arguments

graph	An igraph network or a data frame of three columns: source, target, and weights.
directed	Logical. TRUE if the network is directed. Ignored if graph is an igraph object.
iterations	Number of iterations to be performed.
linlog	Logical. If TRUE the algorithm uses logarithmic attraction force 'F <- log (1+F)'
pos	A data frame or matrix (NumberOfNodes x dimension) of the initial locations of points. If NULL the initial positions are random.
nohubs	Logical. If TRUE nodes with high indegree have more central position than nodes with outdegree (for directed graphs).
k	Is the repel constant: the greater the constant k the stronger the repulsion force between points.
gravity	Gravity constant: indicates how strongly the nodes should be attracted to the center of gravity.
ks	Speed constant: the greater the value of 'ks' the more movement the nodes make under the acting forces.
ksmax	Limits the speed from above.
delta	Modify attraction force, the weights are raised to the power of 'delta'
center	Center of gravity.
dim	Dimension of the positions.
plotstep	is the frequency of plotting intermediate iterations.
plotlabels	Logical. If TRUE the labels should be included in the intermediate interations plot
tolerance	Tolerance to swinging constant.

Value

When graph is an igraph object, the function returns a matrix with the positions. If graph is a data frame, this is a data frame with the names of the nodes and the positions.

Examples

library(igraph)
g <- graph.ring(50)
layout <- layout.forceatlas2(g, iterations=3000, plotstep=100)
plot(g, layout=layout)

analyxcompany/ForceAtlas2 documentation built on May 12, 2019, 2:40 a.m.