方向感知社区

时间:2019-01-15 18:51:59

标签: cytoscape.js

有没有办法让节点的邻居知道方向?

例如,我有节点:

[
    { 'id': 'a' },
    { 'id': 'b' },
    { 'id': 'c' }
]

和边缘:

[
    { 'id': 'ab', 'source': 'a', 'destination': 'b' },
    { 'id': 'ac', 'source': 'a', 'destination': 'c' },
]

现在,当我打电话给nodeB.neighborhoods()时,我得到一个nodeA的结果。 但是nodeB未连接到nodeA(仅nodeA已连接到nodeB)。

也许cytoscape.js已经具有功能,可以用来将所有连接的节点都连接到特定节点?

1 个答案:

答案 0 :(得分:0)

您可以在具有源和目标属性的边缘上进行选择器查询

  

请注意,由于以下原因,此片段没有console.log():

     

cytoscape返回的集合包含大量信息,因此stackoverflow控制台无法显示该信息,它试图将其显示为格式化的字符串或其他内容,然后冻结必须处理的行数...

var cy = window.cy = cytoscape({
  container: document.getElementById('cy'),

  boxSelectionEnabled: false,
  autounselectify: true,

  style: [{
      selector: 'node',
      css: {
        'content': 'data(id)',
        'text-valign': 'center',
        'text-halign': 'center',
        'height': '60px',
        'width': '60px',
        'border-color': 'black',
        'border-opacity': '1',
        'border-width': '10px'
      }
    },
    {
      selector: 'edge',
      css: {
        'target-arrow-shape': 'triangle'
      }
    }
  ],

  elements: {
    nodes: [{
        data: {
          id: 'a'
        }
      },
      {
        data: {
          id: 'b'
        }
      },
      {
        data: {
          id: 'c'
        }
      }
    ],
    edges: [{
        data: {
          source: 'a',
          target: 'b'
        }
      },
      {
        data: {
          source: 'a',
          target: 'c'
        }
      }
    ]
  },

  layout: {
    name: 'concentric'
  }
});

// First option: getting the edges with the sourceId "a" and then all targtes of these edges
var targets = cy.edges('[source = "a"]').targets();

// Second option: getting the node with the id "#a" and then this nodes outgoers (all outgoing edges and their target node). After that, you can either get all edges with .edges() or all nodes with .nodes()
var alternative = cy.$('#a').outgoers().nodes();
body {
  font: 14px helvetica neue, helvetica, arial, sans-serif;
}

#cy {
  height: 100%;
  width: 75%;
  position: absolute;
  left: 0;
  top: 0;
  float: left;
}
<html>

<head>
  <meta charset=utf-8 />
  <meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.2.17/cytoscape.min.js"></script>
  <script src="https://unpkg.com/jquery@3.3.1/dist/jquery.js"></script>
</head>

<body>
  <div id="cy"></div>
</body>

</html>