edgecount
Number of edges between two nodes
Syntax
Description
Examples
Create a graph and display the edges table for reference. Find the number of edges between node 1 and node 2.
G = graph([1 1 1 1 2 2],[2 2 2 3 4 5]); G.Edges
ans=6×1 table
EndNodes
________
1 2
1 2
1 2
1 3
2 4
2 5
N = edgecount(G,1,2)
N = 3
You also can specify a single source node and several target nodes. Find the number of edges between node 1 and all other nodes (including self-loops).
N = edgecount(G,1,1:numnodes(G))
N = 5×1
0
3
1
0
0
Input Arguments
Node pairs, specified as separate arguments of node indices or node names.
Similarly located elements in s
and t
specify the source and target nodes for edges in the graph.
s
and t
must specify the same
number of nodes, unless one of them specifies a single node.
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: | Vector Example: |
Node name | Character vector Example: | Cell array of character vectors Example: |
String scalar Example: | String array Example: |
Example: edgecount(G,1,2)
Example: edgecount(G,1,1:5)
Example: edgecount(G,{'a' 'b' 'c'},'a')
Extended Capabilities
Usage notes and limitations:
The node pairs
s
andt
must be node indices of the input graphG
. Node names are not supported.
Thread-Based Environment
Run code in the background using MATLAB® backgroundPool
or accelerate code with Parallel Computing Toolbox™ ThreadPool
.
Version History
Introduced in R2018a
MATLAB Command
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