Highlight Nodes in a Network Plot — highlight

Highlights selected nodes in an igraph object by changing their label, fill color, and/or outline color. The function modifies node attributes and visualizes the result using plot_Net().

Usage

highlight_nodes(
  graph,
  nodes,
  method = c("label", "fill", "outline"),
  label_color = "darkred",
  highlight_fill_color = "orange",
  highlight_frame_color = "darkblue",
  background_color = "gray",
  ...
)

Arguments

graph: An igraph object or a data.frame representing a symbolic edge list. If a data.frame, it should have at least two columns specifying source and target nodes.
nodes: A character vector of node names to highlight.
method: Character vector specifying how to highlight the nodes. One or more of: "label", "fill", "outline".
label_color: Color for highlighted node labels. Used only if "label" is in method. Default is "darkred".
highlight_fill_color: Fill color for highlighted nodes. Used only if "fill" is in method. Default is "orange".
highlight_frame_color: Outline color for highlighted nodes. Used only if "outline" is in method. Default is "darkblue".
background_color: Fill or frame color for non-highlighted nodes. Default is "gray".
...: Additional arguments passed to plot_Net().

Value

Invisibly returns the igraph object with updated attributes.

Examples

g <- igraph::make_ring(10)
igraph::V(g)$name <- letters[1:10]
highlight_nodes(g, nodes = c("a", "j"), method = "fill")