random-dag v1.0.4

random-dag

Create a random Directed Acyclic Graph as a stream or as a graphlib object.

npm install random-dag

CLI

$ npm install -g random-dag
$ random-dag --max_per_rank=5 --max_ranks=100 --probability=.5
{ from: 0, to: 3 }
{ from: 0, to: 4 }
{ from: 2, to: 3 }
{ from: 2, to: 4 }
{ from: 2, to: 10 }
{ from: 2, to: 11 }
etc...

API

dag.stream(opts)

var dag = require('random-dag')
var opts = {
  max_per_rank: 5, // how 'fat' the DAG should be
  min_per_rank: 1,
  max_ranks: 3, // how 'tall' the DAG should be
  min_ranks: 5,
  probability: 0.3 // chance of having an edge
}
var stream = dag.stream(opts)
stream.on('data', function (edge) {
  // e.g, an edge from node with index '0' and index '1'.
  // {from: 0, to: 1}
})

dag.graphlib(opts, cb)

Can provide optional options as a first argument, same as above stream.

var graphlib = require('graphlib')
var dag = require('random-dag')
dag.graphlib(function (err, g) {
  // g is a graphlib.Graph object
  console.log(graphlib.alg.isAcyclic(g)) // true
})

License

MIT