{"name":"Directed","title":"Orientate each edge in a given edgelist","pagetitle":"Orientate each edge in a given edgelist — Directed","aliases":"Directed","author":"Binbin Lu lubinbin220@gmail.com","keywords":"directed, graph","description":"

This function is to orientate each edge according to the given vector.

","usage":"Directed(edgelist, direction.v=rep(0,length(edgelist[,1])), eadf=NULL)","arguments":[{"name":"edgelist","description":"

An edgelist object, see “edgelist”

"},{"name":"direction.v","description":"

A vector (of length equal to number of edges in edgelist)\n with values of 1 or 0, see details below;

"},{"name":"eadf","description":"

Attribute data frame for all the edges;

"}],"has_args":true,"sections":[],"value":"

A list consisted of:

newEdgelist

A new “edgelist” with directed edges

newEadf

A new attribute data frame for the new “edgelist”

\n","details":"

In a road network data set, some road segments might be one-way while the rest \nare double-way. This suitation makes it complex for defining edges in the graph.\nThis property could be specified in “direction.v”: 1 means one-way and 0 \nrepresents double-way. All the double-way edges in edgelist are clarified as two \ndirected edges (i.e. edge(nid1, nid2) and edge(nid1, nid2) and edge(nid2, nid1)), \nand duplicate the corresponding attributes. The one-way edges could be regarded \nas directed.

","package":{"package":"shp2graph","version":"0-2"}}

Description

Usage

Arguments

Value

Details