Description Usage Arguments Details Value Author(s) Examples

View source: R/structural.properties.R

`subgraph`

creates a subgraph of a graph, containing only the specified
vertices and all the edges among them.

1 2 3 4 5 6 7 8 9 | ```
subgraph(graph, v)
induced_subgraph(
graph,
vids,
impl = c("auto", "copy_and_delete", "create_from_scratch")
)
subgraph.edges(graph, eids, delete.vertices = TRUE)
``` |

`graph` |
The original graph. |

`v` |
Numeric vector, the vertices of the original graph which will form the subgraph. |

`vids` |
Numeric vector, the vertices of the original graph which will form the subgraph. |

`impl` |
Character scalar, to choose between two implementation of the
subgraph calculation. ‘ |

`eids` |
The edge ids of the edges that will be kept in the result graph. |

`delete.vertices` |
Logical scalar, whether to remove vertices that do
not have any adjacent edges in |

`induced_subgraph`

calculates the induced subgraph of a set of vertices
in a graph. This means that exactly the specified vertices and all the edges
between them will be kept in the result graph.

`subgraph.edges`

calculates the subgraph of a graph. For this function
one can specify the vertices and edges to keep. This function will be
renamed to `subgraph`

in the next major version of igraph.

The `subgraph`

function does the same as `induced.graph`

currently
(assuming ‘`auto`

’ as the `impl`

argument), but it is
deprecated and will be removed in the next major version of igraph.

A new graph object.

Gabor Csardi csardi.gabor@gmail.com

1 2 3 | ```
g <- make_ring(10)
g2 <- induced_subgraph(g, 1:7)
g3 <- subgraph.edges(g, 1:5, 1:5)
``` |

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