Plot a skill co-occurrence network graph

Builds an undirected graph from co-occurrence edge data and renders it with ggraph. Edge width and transparency scale with co-occurrence weight. Nodes are labelled with repelled text to avoid overlap.

Usage

plot_cooc_graph(cooc_data, profession = NULL, layout = "fr")

Arguments

cooc_data

A data.table (or data.frame) with columns from, to, and weight representing pairwise skill co-occurrences.

profession

Optional character string. When supplied, the graph is drawn with this profession name as plot title.

layout

Character, graph layout algorithm passed to ggraph::ggraph(). Default "fr" (Fruchterman-Reingold).

Value

A ggplot object produced by ggraph.

Details

Only the largest connected component is plotted, so isolated nodes or disconnected sub-graphs are dropped.