Description Usage Arguments Details Value See Also Examples

Convert objects to class "network"

1 2 3 4 5 6 7 8 |

`x` |
an R object to be coerced, see Details for the description of available methods |

`attrmap` |
data.frame with attribute copy/rename
rules, see |

`directed` |
logical, whether the created network should be directed |

`vertices` |
NULL or data frame, optional data frame containing vertex attributes |

`...` |
other arguments from/to other methods |

This is a generic function which dispatches on argument
`x`

. It creates objects of class "network" from
other R objects.

The method for data frames is inspired by the similar
function in package igraph:
`graph.data.frame`

. It assumes that
first two columns of `x`

constitute an edgelist.
The remaining columns are interpreted as edge attributes.
Optional argument `vertices`

allows for including
vertex attributes. The first column is assumed to vertex
id, the same that is used in the edge list. The remaining
colums are interpreted as vertex attributes.

The method for objects of class "igraph" takes the
network of that class and converts it to data frames
using `asDF`

. The network is recreated in
class "network" using `asNetwork.data.frame`

. The
function currently does not support bipartite "igraph"
networks.

Object of class "network".

`asIgraph`

for conversion in the other
direction.

1 2 3 4 5 6 7 8 9 10 11 12 13 | ```
# require package 'network' as 'asNetwork' generic is defined there
if(require(network, quietly=TRUE))
{
### demonstrating method for data frames
l <- asDF(exNetwork)
g <- asNetwork( l$edges, vertices=l$vertexes)
stopifnot(all.equal(g, exNetwork))
### method for igraph objects
ig <- asNetwork(exIgraph)
identical( as.numeric(as.matrix(g, "adjacency")),
as.numeric(as.matrix(ig, "adjacency")))
}
``` |

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