gCon: Create a connection extractor function
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.
gCon 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
gCon(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
connectionsSee Also
Other extractors: gEdges