d3: Die Eigenschaft 'weight' von undefined in der Implementierung von d3.force kann nicht gelesen werden.

Ich verstehe, dass die Frage millionenfach gestellt wurde. Dennoch kann ich nicht herausfinden, worum es geht. Ich versuche, den kraftgerichteten Graphen wie im Link unten angegeben zu replizieren http: //bl.ocks.org/paulovn/9686202] [1] Der jsfiddle Link isthttp: //jsfiddle.net/k8a3dyuL Ich kann nicht verstehen, warum ich diesen Fehler erhalte.

Ich habe ein Beispiel-JSON-Objekt erstellt, für das es wie erwartet funktioniert hat. Ich kann eine Verbindung zwischen den Knoten herstellen.

"nodes": [
{
  "index": 0, 
  "links": [
    1,
    2,
    3
    ], 
  "score": 7.35923957824707, 
  "level": 3, 
  "title": "Blood Diamond", 
  "cover": "http://d3gtl9l2a4fn1j.cloudfront.net/t/p/w342/wRamTzV6udKaMXrspxqOuo02zk0.jpg", 
  "label": "Blood Diamond (2006)", 
  "director": "Edward Zwick", 
  "cast": "Leonardo DiCaprio, Djimon Hounsou, Jennifer Connelly, Arnold Vosloo, David Harewood, Jimi Mistry, Michael Sheen, Marius Weyers, Stephen Collins, Ato Essandoh", 
  "year": 2006, 
  "duration": "143 minutes", 
  "genre": "Action, Drama, Adventure, Thriller", 
  "id": 1768448
},
{
  "index": 1, 
  "links": [

  ], 
  "score": 7.812180042266846, 
  "level": 2, 
  "title": "Casablanca", 
  "cover": "http://d3gtl9l2a4fn1j.cloudfront.net/t/p/w342/sm1QVZu5RKe1vXVHZooo4SZyHMx.jpg", 
  "label": "Casablanca (1942)", 
  "director": "Michael Curtiz", 
  "cast": "Humphrey Bogart, Ingrid Bergman, Paul Henreid, Claude Rains, Conrad Veidt, Sydney Greenstreet, Peter Lorre, Madeleine Lebeau, Dooley Wilson, Joy Page", 
  "year": 1942, 
  "duration": "102 minutes", 
  "genre": "Drama, Romance, War, Crime", 
  "id": 1750024
},
{
  "index": 2, 
  "links": [
    0
  ], 
  "score": 7.167639255523682, 
  "level": 2, 
  "title": "Lonely Hearts", 
  "cover": "http://d3gtl9l2a4fn1j.cloudfront.net/t/p/w342/wxsyl5wjobtYhll3rf5nGuC4kBN.jpg", 
  "label": "Lonely Hearts (2006)", 
  "director": "Todd Robinson", 
  "cast": "John Travolta, James Gandolfini, Salma Hayek, Jared Leto, Laura Dern, Dan Byrd, Alice Krige, Dagmara Dominczyk, Bailee Madison", 
  "year": 2006, 
  "duration": "108 minutes", 
  "genre": "Drama, Romance, Thriller, Crime", 
  "id": 1758379
}, 
{
  "index": 3, 
  "links": [
    1
    ], 
  "score": 7.595, 
  "level": 3, 
  "title": "Some Movie", 
  "cover": "http://d3gtl9l2a4fn1j.cloudfront.net/t/p/w342/wRamTzV6udKaMXrspxqOuo02zk0.jpg", 
  "label": "Some Movie", 
  "director": "Edward Zwick", 
  "cast": "Leonardo DiCaprio, Djimon Hounsou, Jennifer Connelly, Arnold Vosloo, David Harewood, Jimi Mistry, Michael Sheen, Marius Weyers, Stephen Collins, Ato Essandoh", 
  "year": 2006, 
  "duration": "143 minutes", 
  "genre": "Action, Drama, Adventure, Thriller", 
  "id": 1768448
}
],
"links": [
{
  "source": 0, 
  "target": 2, 
  "weight": 0.9770450592041016
},
{
  "source": 0, 
  "target": 3, 
  "weight": 0.9770450592041016
},
{
  "source": 1, 
  "target": 1, 
  "weight": 0.9770450592041016
}
]
}

Funktioniert nich

{
"nodes": [{
    "index": 897,
    "links": [22,
    806,
    897],
    "score": "NA",
    "level": 1,
    "title": "Customer position",
    "cover": "comapny name",
    "label": "label",
    "director": "dir",
    "cast": "cast",
    "year": 2000,
    "duration": 2,
    "genre": "NA",
    "id": 897,
    "weight": 1
},
{
    "index": 737,
    "links": [737,
    869],
    "score": "NA",
    "level": 1,
    "title": "Customer position",
    "cover": "comapny name",
    "label": "label",
    "director": "dir",
    "cast": "cast",
    "year": 2000,
    "duration": 2,
    "genre": "NA",
    "id": 737,
    "weight": 1
},
{
    "index": 869,
    "links": [737,
    869],
    "score": "NA",
    "level": 1,
    "title": "Customer position",
    "cover": "comapny name",
    "label": "label",
    "director": "dir",
    "cast": "cast",
    "year": 2000,
    "duration": 2,
    "genre": "NA",
    "id": 869,
    "weight": 1
}],
"links": [
{
    "source": 737,
    "target": 869,
    "weight": 0.9770450592041016
},
{
    "source": 897,
    "target": 806,
    "weight": 0.9770450592041016
},
{
    "source": 897,
    "target": 22,
    "weight": 0.9770450592041016
}
]

}

Wie kann ich das beheben?