Plot Mixed Network — plot_mixed

Plot a network combining symmetric (undirected) and asymmetric (directed) matrices with appropriate edge styling.

Creates a network visualization combining edges from a symmetric matrix (rendered as straight undirected edges) and an asymmetric matrix (rendered as curved directed edges).

Usage

plot_mixed_network(
  sym_matrix,
  asym_matrix,
  layout = "oval",
  sym_color = "ivory4",
  asym_color = COGRAPH_SCALE$tna_edge_color,
  curvature = 0.3,
  edge_width = NULL,
  node_size = 7,
  title = NULL,
  threshold = 0,
  edge_labels = TRUE,
  arrow_size = 0.61,
  edge_label_size = 0.6,
  edge_label_position = 0.7,
  initial = NULL,
  ...
)

Arguments

sym_matrix: A symmetric matrix representing undirected relationships. These edges will be drawn straight without arrows.
asym_matrix: An asymmetric matrix representing directed relationships. These edges will be drawn curved with arrows. Reciprocal edges curve in opposite directions.
layout: Layout algorithm or coordinate matrix. Default "oval".
sym_color: Color for symmetric/undirected edges. Default "ivory4".
asym_color: Color for asymmetric/directed edges. Can be a single color or a vector of two colors for positive/negative directions. Default "#003355" (dark blue, matching TNA style).
curvature: Curvature magnitude for directed edges. Default 0.3.
edge_width: Edge width(s). If NULL (default), scales automatically by edge weight like TNA plots. Pass a numeric value to override.
node_size: Node size. Default 7.
title: Plot title. Default NULL.
threshold: Minimum absolute edge weight to display. Values with abs(value) < threshold are set to zero (edge removed). Default 0. Zero-weight edges are always removed regardless of this setting.
edge_labels: Show edge weight labels. Default TRUE.
arrow_size: Arrow head size for directed edges. Default 0.61 (TNA style).
edge_label_size: Size of edge labels. Default 0.6.
edge_label_position: Position of edge labels along edge (0-1). Default 0.7.
initial: Optional named numeric vector of initial state probabilities (length = number of nodes). When provided, nodes are drawn as donuts with the fill proportion equal to the initial probability. Default NULL.
...: Additional arguments passed to splot().

Value

Invisibly returns a list with the combined edge data and filtered symmetric/asymmetric matrices.

Examples

# Create symmetric matrix (undirected)
sym <- matrix(0, 4, 4, dimnames = list(LETTERS[1:4], LETTERS[1:4]))
sym[1,2] <- sym[2,1] <- 0.5
sym[3,4] <- sym[4,3] <- 0.6

# Create asymmetric matrix (directed)
asym <- matrix(0, 4, 4, dimnames = list(LETTERS[1:4], LETTERS[1:4]))
asym[1,3] <- 0.7
asym[3,1] <- 0.3
asym[2,4] <- 0.8
asym[4,2] <- 0.4

# Plot combined network
plot_mixed_network(sym, asym, title = "Mixed Network")