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Plot an igraph network with customizable node sizes and edge widths

plot_Net.Rd

This function plots an igraph network graph with options to customize node size based on vertex degree or a numeric vertex attribute, set node and edge colors, label nodes, and adjust edge widths (optionally mapped to edge betweenness centrality).

Usage

plot_Net(
  graph,
  label = FALSE,
  color = "#006d77",
  color_ramp = c("blue", "white", "red"),
  NA_color = "gray",
  frame.color = NULL,
  node.size.factor = 1,
  node.degree.map = TRUE,
  edge.color = "#999999",
  edge.width.factor = 1,
  edge.bw.map = TRUE,
  label.color = "#e29578",
  label.size = 1,
  layout = NULL,
  ...
)

Arguments

graph

An igraph object representing the network to plot or a data frame containing a symbolic edge list in the first two columns. Additional columns are considered as edge attributes.

label

Logical, or character vector. If FALSE, no node labels are shown. If TRUE, node labels are set to vertex names or existing labels. If a character vector of length equal to the number of vertices, used as custom node labels.

color

Character. Color for node fill, or existing vertex attribute name to map node fill color. Default is '#006d77'.

color_ramp

A character vector of colors (e.g., c("blue", "white", "red")) used to create a continuous color ramp for mapping numeric node attributes to colors. Ignored if a fixed color is provided or if node color is categorical. Passed to colorRampPalette to interpolate a gradient of colors.

NA_color

Node color for NAs in node color mapping.

frame.color

Character. Color for node frame, or existing vertex attribute name to map node frame color. Default is NULL.

node.size.factor

Numeric or character. If numeric, acts as a constant scaling factor for node size. If character, it should be the name of a numeric vertex attribute used to size nodes.

node.degree.map

Logical. If TRUE and node.size.factor is numeric, node size is mapped to vertex degree multiplied by node.size.factor. Ignored if node.size.factor is character.

edge.color

Character. Color of edges. Default is '#999999'.

edge.width.factor

Numeric. Factor to scale edge widths. Default is 1.

edge.bw.map

Logical. If TRUE, edge widths are mapped to the log-transformed edge betweenness centrality. Otherwise, edges have uniform width.

label.color

Character. Color of node labels. Default is '#e29578'.

label.size

Numeric. Character expansion factor for label size. Default is 1.

layout

Optional numeric matrix specifying vertex coordinates for layout.

...

Additional parameters passed to plot.igraph.

Value

Invisibly returns NULL. The function produces a plot.

Examples

if (FALSE) { # \dontrun{
library(igraph)
g <- random.graph.game(100, 0.02)
plot_Net(g, label = TRUE, node.size.factor = 2)
} # }