Arbor.js Social Graph

HTML

<script src="http://arborjs.org/js/lib/arbor.js"></script>
<link rel="stylesheet" href="http://arborjs.org/echolalia/style/echolalia.css">
<canvas id="viewport" width="800 height="600"></canvas>

JavaScript

datain = {
    "nodes": {
        "a": {ff},
        "c": {ggg},
        "b": {},
        "e": {},
        "d": {},
        "g": {},
        "f": {},
        "i": {},
        "h": {},
        "k": {},
        "j": {},
        "x": {}
    },
    "edges": {
        "a": {
            "c": {
                "weight": 1.0
            },
            "b": {
                "weight": 0.22872799999999999
            },
            "e": {
                "weight": 0.26388899999999998
            },
            "f": {
                "weight": 0.5
            },
            "i": {
                "weight": 0.34078199999999997
            },
            "x": {
                "weight": 0.375
            }
        },
        "c": {
            "a": {
                "weight": 0.19642899999999999
            },
            "d": {
                "weight": 0.49358999999999997
            }
        },
        "b": {
            "i": {
                "weight": 0.198324
            },
            "a": {
                "weight": 0.80847000000000002
            },
            "k": {
                "weight": 1.0
            },
            "j": {
                "weight": 0.243836
            }
        },
        "e": {
            "a": {
                "weight": 0.141791
            },
            "h": {
                "weight": 1.0
            },
            "x": {
                "weight": 0.125
            },
            "d": {
                "weight": 0.48717899999999997
            },
            "f": {
                "weight": 0.49371100000000001
            }
        },
        "d": {
            "c": {
                "weight": 1.0
            },
            "e": {
                "weight": 0.35022999999999999
            }
        },
        "g": {
            "i": {
                "weight": 0.38043500000000002
            },
            "h": {
                "weight": 1.0
            }
        },
        "f": {
            "a": {
                "weight":...