get_con: Create a connection extractor function

In YTLogos/ggraph: An Implementation of Grammar of Graphics for Graphs and Networks

Description

Connections within the ggraph terminology are links between nodes that are not part of the network structure itself. In that sense connections does not affect the layout calculation in any way and will not be drawn by the standard geom_edge_* functions. A connection does not need to only be defined by a start and end node, but can include intermediary nodes. get_con helps in creating connection data by letting you specify start and end node and automatically find the shortest path within the graph structure that connects the given points. If this is not what is needed it is also possible to supply a list of vectors giving node indexes that defines a connection.

Usage

get_con(from = integer(), to = integer(), paths = NULL, ...)

Arguments

from, to	The index of the start and end nodes for the connections
paths	A list of integer vectors giving the index of nodes defining connections
...	Additional information to be added to the final data output

Value

A function that takes a layout_ggraph object and returns the given connections

See Also

Other extractors: get_edges, get_nodes

YTLogos/ggraph documentation built on May 6, 2019, 4:37 p.m.