# gv2adj
gv2adj computes adjacency matrices (either weighted or unweighted) for Graphviz
graphs (both directed and undirected).

## Usage
To get the adjacency matrix of a graph in `graph.gv`:
```
gv2adj -f graph.gv
```

To get the matrix, but using the values stored in the `len` attribute as edge weights:
```
gv2adj -f graph.gv --weight-attr len
```

Say the nodes in the graph are named `foo`, `bar`, and `baz`. To order the rows and columns of the matrix so they correspond to `bar`, `baz`, `foo`:
```
gv2adj -f graph.gv --order bar,baz,foo
```

## Quirks
* If the `--weight-attr` flag is supplied, but an edge does not have the given
  attribute, NaN will be output for that edge.
* If there are multiple edges going from node `a` to node `b`, the matrix entry
  will be the sum of the two.