write_brainnet: Write files to be used for visualization with BrainNet Viewer

In brainGraph: Graph Theory Analysis of Brain MRI Data

Write files to be used for visualization with BrainNet Viewer

Description

Write the .node and .edge files necessary for visualization with the BrainNet Viewer software.

Usage

write_brainnet(
  g,
  vcolor = "none",
  vsize = "constant",
  edge.wt = NULL,
  file.prefix = ""
)

Arguments

g	The igraph graph object of interest
vcolor	Character string indicating how to color the vertices (default: 'none')
vsize	Character string indicating what size the vertices should be; can be any vertex-level attribute (default: 'constant')
edge.wt	Character string indicating the edge attribute to use to return a weighted adjacency matrix (default: NULL)
file.prefix	Character string for the basename of the .node and .edge files that are written

Details

For the .node file, there are 6 columns:

• Columns 1-3: Vertex x-, y-, and z-coordinates

• Column 4: Vertex color

• Column 5: Vertex size

• Column 6: Vertex label

The .edge file is the graph's associated adjacency matrix; a weighted adjacency matrix can be returned by using the edge.wt argument.

Author(s)

Christopher G. Watson, [e-mail]

References

Xia, M. and Wang, J. and He, Y. (2013). BrainNet Viewer: a network visualization tool for human brain connectomics. PLoS One, 8(7), e68910. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1371/journal.pone.0068910")}

Examples

## Not run: 
write_brainnet(g, vcolor='community', vsize='degree', edge.wt='t.stat')

## End(Not run)

brainGraph documentation built on Nov. 5, 2025, 6:31 p.m.