2015-10-21 7 views
12

私はForce directed Graphに従っています。有向グラフにおけるリンク(線)の重なりを防ぐ方法。期待される出力は thisのようになります。現在のJSONデータには親子関係の船が含まれていません。ここで力の有向グラフにおけるリンクの重なりを防ぐ方法は?

は私のコードです:

var width = 960, 
 
    height = 500; 
 

 
var color = d3.scale.category20(); 
 

 
var force = d3.layout.force() 
 
    .charge(-120) 
 
    .linkDistance(30) 
 
    .size([width, height]); 
 

 
var svg = d3.select("body").append("svg") 
 
    .attr("width", width) 
 
    .attr("height", height); 
 

 
var graph = { 
 
    "nodes":[ 
 
    {"name":"Myriel","group":1}, 
 
    {"name":"Napoleon","group":1}, 
 
    {"name":"Mlle.Baptistine","group":1}, 
 
    {"name":"Mme.Magloire","group":1}, 
 
    {"name":"CountessdeLo","group":1}, 
 
    {"name":"Geborand","group":1}, 
 
    {"name":"Champtercier","group":1}, 
 
    {"name":"Cravatte","group":1}, 
 
    {"name":"Count","group":1}, 
 
    {"name":"OldMan","group":1}, 
 
    {"name":"Labarre","group":2}, 
 
    {"name":"Valjean","group":2}, 
 
    {"name":"Marguerite","group":3}, 
 
    {"name":"Mme.deR","group":2}, 
 
    {"name":"Isabeau","group":2}, 
 
    {"name":"Gervais","group":2}, 
 
    {"name":"Tholomyes","group":3}, 
 
    {"name":"Listolier","group":3}, 
 
    {"name":"Fameuil","group":3}, 
 
    {"name":"Blacheville","group":3}, 
 
    {"name":"Favourite","group":3}, 
 
    {"name":"Dahlia","group":3}, 
 
    {"name":"Zephine","group":3}, 
 
    {"name":"Fantine","group":3}, 
 
    {"name":"Mme.Thenardier","group":4}, 
 
    {"name":"Thenardier","group":4}, 
 
    {"name":"Cosette","group":5}, 
 
    {"name":"Javert","group":4}, 
 
    {"name":"Fauchelevent","group":0}, 
 
    {"name":"Bamatabois","group":2}, 
 
    {"name":"Perpetue","group":3}, 
 
    {"name":"Simplice","group":2}, 
 
    {"name":"Scaufflaire","group":2}, 
 
    {"name":"Woman1","group":2}, 
 
    {"name":"Judge","group":2}, 
 
    {"name":"Champmathieu","group":2}, 
 
    {"name":"Brevet","group":2}, 
 
    {"name":"Chenildieu","group":2}, 
 
    {"name":"Cochepaille","group":2}, 
 
    {"name":"Pontmercy","group":4}, 
 
    {"name":"Boulatruelle","group":6}, 
 
    {"name":"Eponine","group":4}, 
 
    {"name":"Anzelma","group":4}, 
 
    {"name":"Woman2","group":5}, 
 
    {"name":"MotherInnocent","group":0}, 
 
    {"name":"Gribier","group":0}, 
 
    {"name":"Jondrette","group":7}, 
 
    {"name":"Mme.Burgon","group":7}, 
 
    {"name":"Gavroche","group":8}, 
 
    {"name":"Gillenormand","group":5}, 
 
    {"name":"Magnon","group":5}, 
 
    {"name":"Mlle.Gillenormand","group":5}, 
 
    {"name":"Mme.Pontmercy","group":5}, 
 
    {"name":"Mlle.Vaubois","group":5}, 
 
    {"name":"Lt.Gillenormand","group":5}, 
 
    {"name":"Marius","group":8}, 
 
    {"name":"BaronessT","group":5}, 
 
    {"name":"Mabeuf","group":8}, 
 
    {"name":"Enjolras","group":8}, 
 
    {"name":"Combeferre","group":8}, 
 
    {"name":"Prouvaire","group":8}, 
 
    {"name":"Feuilly","group":8}, 
 
    {"name":"Courfeyrac","group":8}, 
 
    {"name":"Bahorel","group":8}, 
 
    {"name":"Bossuet","group":8}, 
 
    {"name":"Joly","group":8}, 
 
    {"name":"Grantaire","group":8}, 
 
    {"name":"MotherPlutarch","group":9}, 
 
    {"name":"Gueulemer","group":4}, 
 
    {"name":"Babet","group":4}, 
 
    {"name":"Claquesous","group":4}, 
 
    {"name":"Montparnasse","group":4}, 
 
    {"name":"Toussaint","group":5}, 
 
    {"name":"Child1","group":10}, 
 
    {"name":"Child2","group":10}, 
 
    {"name":"Brujon","group":4}, 
 
    {"name":"Mme.Hucheloup","group":8} 
 
    ], 
 
    "links":[ 
 
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    {"source":76,"target":48,"value":1}, 
 
    {"source":76,"target":58,"value":1} 
 
    ] 
 
} 
 

 
//d3.json("miserables.json", function(error, graph) { 
 
    force 
 
     .nodes(graph.nodes) 
 
     .links(graph.links) 
 
     .start(); 
 

 
    var link = svg.selectAll(".link") 
 
     .data(graph.links) 
 
    .enter().append("line") 
 
     .attr("class", "link") 
 
     .style("stroke-width", function(d) { return Math.sqrt(d.value); }); 
 

 
    var node = svg.selectAll(".node") 
 
     .data(graph.nodes) 
 
    .enter().append("circle") 
 
     .attr("class", "node") 
 
     .attr("r", 5) 
 
     .style("fill", function(d) { return color(d.group); }) 
 
     .call(force.drag); 
 

 
    node.append("title") 
 
     .text(function(d) { return d.name; }); 
 

 
    force.on("tick", function() { 
 
    link.attr("x1", function(d) { return d.source.x; }) 
 
     .attr("y1", function(d) { return d.source.y; }) 
 
     .attr("x2", function(d) { return d.target.x; }) 
 
     .attr("y2", function(d) { return d.target.y; }); 
 

 
    node.attr("cx", function(d) { return d.x; }) 
 
     .attr("cy", function(d) { return d.y; }); 
 
    }); 
 
//});
.node { 
 
    stroke: #fff; 
 
    stroke-width: 1.5px; 
 
} 
 

 
.link { 
 
    stroke: #999; 
 
    stroke-opacity: .6; 
 
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.0/d3.min.js"></script>

+0

すべてのグラフでは不可能だと思います。私はそれが可能であるすべてのケースでどのように達成できるかについて興味を持っています。 – Oliver

+0

を参照してください。https://stackoverflow.com/questions/29006725/avoid-links-criss-cross-overlap-in-d3-js-using-force-layout –

+1

接続されている支店があるとは思わない同じ親の他の支店に送る。表示された例は、ノードが単一の親ノードに接続し、その子ノードがすべての場合にのみ機能します。 – myrcutio

答えて

0

私がコメントを残したかったが、私は十分な評判を持っていないので、私が代わりに「答え」だ - 申し訳ありませんがそうではありません多くの答え...

あなたの予想される出力の例は、多かれ少なかれ魔法のように重複するリンクの問題を解決するツリー/非連続です。あなたはこの例ではMike Bostock(http://bl.ocks.org/mbostock/1062288)から見ることができます。データがツリーであるだけでリンクのオーバーラップはあまりありません。

そう...

あなたのデータは、ツリーであれば、あなたは幸運かもしれないし、リンク重複は非問題になる可能性があります。 Bostockの例で重複しているのは、兄弟ノードのリンク距離が異なる(姪/甥 - 叔母/叔父のリンクが重なっている)ときに起こります。リンク距離を制御すると(おそらくルートの近くに長いリンクがあるツリーの深さの関数になります)、と考えるとはツリーの重なりを防ぎます。

データが循環している(Miserablesのデータのように)の場合、オーバーラップを防ぐことははるかに複雑で、それ自体を並べ替えるだけではありません。他の人が言っているように、私はそれがどんなD3レイアウトでも可能ではないと思います。

1

2つのノード間に複数のリンクが重複している場合は、それらを視覚的に分離するために曲率が大きくなる円弧として描画することで解決できます。

オーバーラップするとエッジが交差する場合は、グラフが平面である場合にのみ可能です - https://en.wikipedia.org/wiki/Planarity_testing - グラフを見るとそうではありません - ほとんど完全な接続性を持つ少なくとも2つのサブグラフがあります。あなたは、特にエッジの交差を削減しようとすると、グラフレイアウトアルゴリズムを必要とするだろう、とその上の悪いニュースは、それがNP完全問題だと

クロッシング数はNP完全です:DOI:10.1137/0604033 https://en.wikipedia.org/wiki/Crossing_number_(graph_theory)

いくつかの技術がコンフルエントエッジまたはモチーフとそれらのエッジセットを交換することによって、完全なサブグラフに使用することができるが、これは研究を描くグラフにステッピングされる:可視化非平面図の平面で:簡単な答えは

コンフルエント図面はありません方法 DOI:10.1007/978-3-540-24595-7_1

モチーフ簡素化:ファン、コネクタ、およびクリークグリフ DOIとネットワークの可視化 可読性を向上させる:要するに10.1145/2470654.2466444

、エッジの交差を取得しないようにする唯一の確実な方法は、エッジを描画することではありません。おそらく、グラフのマトリックス型の視覚化を見てみてください。 - https://bost.ocks.org/mike/miserables/

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