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The GEM layout algorithm

Source: R/layout.R
layout.gem.Rd

[Deprecated]

layout.gem() was renamed to layout_with_gem() to create a more consistent API.

Usage

layout.gem(
  graph,
  coords = NULL,
  maxiter = 40 * vcount(graph)^2,
  temp.max = max(vcount(graph), 1),
  temp.min = 1/10,
  temp.init = sqrt(max(vcount(graph), 1))
)

Arguments

graph

The input graph. Edge directions are ignored.

coords

If not NULL, then the starting coordinates should be given here, in a two or three column matrix, depending on the dim argument.

maxiter

The maximum number of iterations to perform. Updating a single vertex counts as an iteration. A reasonable default is 40 * n * n, where n is the number of vertices. The original paper suggests 4 * n * n, but this usually only works if the other parameters are set up carefully.

temp.max

The maximum allowed local temperature. A reasonable default is the number of vertices.

temp.min

The global temperature at which the algorithm terminates (even before reaching maxiter iterations). A reasonable default is 1/10.

temp.init

Initial local temperature of all vertices. A reasonable default is the square root of the number of vertices.

vcount(), layout_gem()