`graph.adjacency()`

was renamed to `graph_from_adjacency_matrix()`

to create a more
consistent API.

## Usage

```
graph.adjacency(
adjmatrix,
mode = c("directed", "undirected", "max", "min", "upper", "lower", "plus"),
weighted = NULL,
diag = TRUE,
add.colnames = NULL,
add.rownames = NA
)
```

## Arguments

- adjmatrix
A square adjacency matrix. From igraph version 0.5.1 this can be a sparse matrix created with the

`Matrix`

package.- mode
Character scalar, specifies how igraph should interpret the supplied matrix. See also the

`weighted`

argument, the interpretation depends on that too. Possible values are:`directed`

,`undirected`

,`upper`

,`lower`

,`max`

,`min`

,`plus`

. See details below.- weighted
This argument specifies whether to create a weighted graph from an adjacency matrix. If it is

`NULL`

then an unweighted graph is created and the elements of the adjacency matrix gives the number of edges between the vertices. If it is a character constant then for every non-zero matrix entry an edge is created and the value of the entry is added as an edge attribute named by the`weighted`

argument. If it is`TRUE`

then a weighted graph is created and the name of the edge attribute will be`weight`

. See also details below.- diag
Logical scalar, whether to include the diagonal of the matrix in the calculation. If this is

`FALSE`

then the diagonal is zerod out first.- add.colnames
Character scalar, whether to add the column names as vertex attributes. If it is ‘

`NULL`

’ (the default) then, if present, column names are added as vertex attribute ‘name’. If ‘`NA`

’ then they will not be added. If a character constant, then it gives the name of the vertex attribute to add.- add.rownames
Character scalar, whether to add the row names as vertex attributes. Possible values the same as the previous argument. By default row names are not added. If ‘

`add.rownames`

’ and ‘`add.colnames`

’ specify the same vertex attribute, then the former is ignored.