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outdegree

Out-degree of nodes

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Syntax

D = outdegree(G)
D = outdegree(G,nodeIDs)

Description

example

D= outdegree(G)returns a column vector containing the out-degree of each node inG.

example

D= outdegree(G,nodeIDs)returns the out-degree of the nodes specified bynodeIDs.

Examples

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Open Live Script

Create and plot a directed graph, and then compute the out-degree of every node in the graph. The out-degree of a node is equal to the number of edges with that node as the source.

s = [1 3 2 2 4 5 1 2]; t = [2 2 4 5 6 6 6 6]; G = digraph(s,t); plot(G)

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

outdeg = outdegree(G)
outdeg =6×12 3 1 1 1 0

outdeg(j)indicates the out-degree of nodej.

Open Live Script

Create and plot a directed graph with named nodes. Then compute the number of edges that have the'a','b', and'f'nodes as their source.

s = {'a''c''b''b''d''e''a''b'}; t = {'b''b''d''e''f''f''f''f'}; G = digraph(s,t); plot(G)

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

nodeID = {'a''b''f'}'; outdeg = outdegree(G,nodeID)
outdeg =3×12 3 0

outdeg(j)indicates the out-degree of nodenodeID(j).

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 identifiers, specified as one or more node indices or node names.

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:outdegree(G,1)

Example:outdegree(G,["A" "B" "C"])

Output Arguments

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Out-degree of nodes, returned as a numeric array.Dis a column vector unless you specifynodeIDs, in which caseDhas the same size asnodeIDs.

Extended Capabilities

Version History

Introduced in R2015b

See Also

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