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flipedge

Reverse edge directions

所有的页面崩溃

Syntax

H = flipedge(G)
H = flipedge(G,s,t)
H = flipedge(G,idx)

Description

example

H= flipedge(G)returns a directed graph that has the same edges asG, but with reversed directions.Hcontains the same node and edge properties asG.

example

H= flipedge(G,s,t)reverses a subset of edges using the node pairssandt.

H= flipedge(G,idx)reverses a subset of edges using the edge indicesidx.

Examples

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Open Live Script

Create and plot a directed graph. Then reverse the direction of all of the edges in the graph.

G = digraph([1 1 1 1],[2 3 4 5]); plot(G)

Figure contains an axes object. The axes object contains an object of type graphplot.

H = flipedge(G); plot(H)

Figure contains an axes object. The axes object contains an object of type graphplot.

Open Live Script

Create and plot a directed graph. Specify customxynode coordinates for the plot.

G = digraph([1 1 2 2 3],[2 3 3 4 5]); x = [1 0 2 -1 3]; y = [1 2 2 2.5 2.5]; plot(G,“XData”,x,'YData', y)

Figure contains an axes object. The axes object contains an object of type graphplot.

Reverse the direction of the edges (2,4) and (3,5), and then replot the graph.

H = flipedge(G,[2 3],[4 5]); plot(H,“XData”,x,'YData', y)

Figure contains an axes object. The axes object contains an object of type graphplot.

Input Arguments

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Input graph, specified as adigraphobject. Usedigraphto create a directed graph object.

Example:G = digraph([1 2],[2 3])

Node pairs, specified as separate arguments of node indices or node names. Similarly located elements insandtspecify the source and target nodes for edges in the graph.

This table shows the different ways to refer to one or more nodes either by their numeric node indices or by their node names.

Form Single Node Multiple Nodes
Node index

Scalar

Example:1

Vector

Example:[1 2 3]
Node name

Character vector

Example:'A'

Cell array of character vectors

Example:{'A' 'B' 'C'}

String scalar

Example:"A"

String array

Example:["A" "B" "C"]

Example:H = flipedge(G,[1 4],[2 3])reverses the direction of the edges (1,2) and (4,3).

Example:H = flipedge(G,{'a' 'd'},{'b' 'c'})reverses the direction of the edges (a,b) and (d,c).

Edge indices, specified as a scalar or vector of positive integers. Each edge index corresponds to a row in theG.Edgestable of the graphG.Edges(idx,:).

Example:H = flipedge(G,3)flips the direction of edgeG.Edges(3,:).

Output Arguments

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Output graph, returned as adigraphobject. Compared toG,Hhas the same nodes but some or all of the edges are in reversed direction.Halso has the same node and edge properties asG.

版本History

Introduced in R2016b

See Also

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Topics