Convert intelligible graph to D3 graph.

convertD3graph.js

// almost d3-style graph
var graph = {"nodes" : [
      {"name":"somenode"},
      {"name":"somenewnode"}
    ], 
    "links":[
      {"source":"somenode", "target":"somenewnode"}
    ]
};

function findNodeIndex(name) {
  for (var i = 0; i < graph.nodes.length; i++) {
    if (graph.nodes[i].name == name) {
      return i;
    }
  }
  return -1;
}
        
// rewrite edge sources and targets to be indices into graph.nodes.
graph.links.map(function (l) { l.source = findNodeIndex(l.source); l.target = findNodeIndex(l.target); });