Spatial networks in R with sf and tidygraph

All examples of spatial networks: organized systems of nodes and edges embedded in space. For most of them, these nodes and edges can be associated with geographical coordinates. That is, the nodes are geographical points, and the edges geographical lines. Such spatial networks can be analyzed using graph theory. Not for nothing, Leonhard Eulers famous work on the Seven Bridges of Köningsberg, which laid the foundations of graph theory and network analysis, was in essence a spatial problem.