Description Usage Arguments Details Value See Also Examples

This function can be used to add or delete edges that form a path.

1 |

`...` |
See details below. |

When adding edges via `+`

, all unnamed arguments are
concatenated, and each element of a final vector is interpreted
as a vertex in the graph. For a vector of length *n+1*, *n*
edges are then added, from vertex 1 to vertex 2, from vertex 2 to vertex
3, etc. Named arguments will be used as edge attributes for the new
edges.

When deleting edges, all attributes are concatenated and then passed
to `delete_edges`

.

A special object that can be used together with igraph graphs and the plus and minus operators.

Other functions for manipulating graph structure:
`+.igraph()`

,
`add_edges()`

,
`add_vertices()`

,
`delete_edges()`

,
`delete_vertices()`

,
`edge()`

,
`igraph-minus`

,
`vertex()`

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ```
# Create a (directed) wheel
g <- make_star(11, center = 1) + path(2:11, 2)
plot(g)
g <- make_empty_graph(directed = FALSE, n = 10) %>%
set_vertex_attr("name", value = letters[1:10])
g2 <- g + path("a", "b", "c", "d")
plot(g2)
g3 <- g2 + path("e", "f", "g", weight=1:2, color="red")
E(g3)[[]]
g4 <- g3 + path(c("f", "c", "j", "d"), width=1:3, color="green")
E(g4)[[]]
``` |

```
Attaching package: 'igraph'
The following objects are masked from 'package:stats':
decompose, spectrum
The following object is masked from 'package:base':
union
+ 5/5 edges from 5417bdb (vertex names):
tail head tid hid weight color
1 a b 1 2 NA <NA>
2 b c 2 3 NA <NA>
3 c d 3 4 NA <NA>
4 e f 5 6 1 red
5 f g 6 7 2 red
+ 8/8 edges from 4b31048 (vertex names):
tail head tid hid weight color width
1 a b 1 2 NA <NA> NA
2 b c 2 3 NA <NA> NA
3 c d 3 4 NA <NA> NA
4 e f 5 6 1 red NA
5 f g 6 7 2 red NA
6 c f 3 6 NA green 1
7 c j 3 10 NA green 2
8 d j 4 10 NA green 3
```

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