H = rmedge(G,s,t)
removes the edges specified by the node pairs s and
t from graph G. If there are multiple
edges specified by s and t, then they are all
removed.

This example shows how to remove all of the self-loops from a graph. Self-loops are edges that connect a node to itself.

Create a graph that has two self-loops.

G = graph([1 1 1 2],[1 2 3 2]);
plot(G)

Use rmedge to remove all self-loops from the graph. Even though G has only two self-loops, this technique removes all self-loops from any directed or undirected graph.

G = rmedge(G, 1:numnodes(G), 1:numnodes(G));
plot(G)

Input graph, specified as either a graph or digraph
object. Use graph to create an undirected graph or
digraph to create a directed graph.

Example: G = graph(1,2)

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

s,t — Node pairs (as separate arguments) node indices | node names

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.

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: G = rmedge(G,1,2) removes the edge between node
1 and node 2 from graph G.

Example: G = rmedge(G,{'a' 'b'},{'d' 'c'}) removes two
edges from graph G, the first of which is between node
'a' and node 'd'.

idx — Edge indices scalar | vector

Edge indices, specified as a scalar or vector. The edge indices are
nonnegative integers that are row numbers in the G.Edges
table.

Example: G = rmedge(G,[1 3 5]) removes the first, third,
and fifth edges (rows) from G.Edges.

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