Question

我想使用d3.js更改svg图的节点标签而不再渲染它。我不想一次又一次地生成图形，只是更改节点标签中的数据。

似乎我改变了标签值，我需要再次调用“渲染器”，再次绘制图形：

this.renderer = new dagreD3.render();
this.renderer(inner, g); // draw final graph

Answer 1

只需控制并直接使用d3执行此操作，例如：

var newLabels = ['my', 'new', 'labels'];
d3.selectAll(".node")
  .select("tspan")
  .text(function(d,i){
    return newLabels[i];
  });

这将找到所有节点，其下的tspan包含标签并将其替换为新文本。请注意，dagre看起来有些工作可以使标签居中并调整矩形的大小，因此您可能需要根据新文本进行调整。

这是一个更全面的例子：

// Create a new directed graph
var g = new dagreD3.graphlib.Graph().setGraph({});

// States and transitions from RFC 793
var states = [ "CLOSED", "LISTEN", "SYN RCVD", "SYN SENT",
               "ESTAB", "FINWAIT-1", "CLOSE WAIT", "FINWAIT-2",
               "CLOSING", "LAST-ACK", "TIME WAIT" ];

// Automatically label each of the nodes
states.forEach(function(state) { g.setNode(state, { label: state }); });

// Set up the edges
g.setEdge("CLOSED",     "LISTEN",     { label: "open" });
g.setEdge("LISTEN",     "SYN RCVD",   { label: "rcv SYN" });
g.setEdge("LISTEN",     "SYN SENT",   { label: "send" });
g.setEdge("LISTEN",     "CLOSED",     { label: "close" });
g.setEdge("SYN RCVD",   "FINWAIT-1",  { label: "close" });
g.setEdge("SYN RCVD",   "ESTAB",      { label: "rcv ACK of SYN" });
g.setEdge("SYN SENT",   "SYN RCVD",   { label: "rcv SYN" });
g.setEdge("SYN SENT",   "ESTAB",      { label: "rcv SYN, ACK" });
g.setEdge("SYN SENT",   "CLOSED",     { label: "close" });
g.setEdge("ESTAB",      "FINWAIT-1",  { label: "close" });
g.setEdge("ESTAB",      "CLOSE WAIT", { label: "rcv FIN" });
g.setEdge("FINWAIT-1",  "FINWAIT-2",  { label: "rcv ACK of FIN" });
g.setEdge("FINWAIT-1",  "CLOSING",    { label: "rcv FIN" });
g.setEdge("CLOSE WAIT", "LAST-ACK",   { label: "close" });
g.setEdge("FINWAIT-2",  "TIME WAIT",  { label: "rcv FIN" });
g.setEdge("CLOSING",    "TIME WAIT",  { label: "rcv ACK of FIN" });
g.setEdge("LAST-ACK",   "CLOSED",     { label: "rcv ACK of FIN" });
g.setEdge("TIME WAIT",  "CLOSED",     { label: "timeout=2MSL" });

// Set some general styles
g.nodes().forEach(function(v) {
  var node = g.node(v);
  node.rx = node.ry = 5;
});

// Add some custom colors based on state
g.node('CLOSED').style = "fill: #f77";
g.node('ESTAB').style = "fill: #7f7";

var svg = d3.select("svg"),
    inner = svg.select("g");

// Set up zoom support
var zoom = d3.behavior.zoom().on("zoom", function() {
      inner.attr("transform", "translate(" + d3.event.translate + ")" +
                                  "scale(" + d3.event.scale + ")");
    });
svg.call(zoom);

// Create the renderer
var render = new dagreD3.render();

// Run the renderer. This is what draws the final graph.
render(inner, g);

// Center the graph
var initialScale = 0.75;
zoom
  .translate([(svg.attr("width") - g.graph().width * initialScale) / 2, 20])
  .scale(initialScale)
  .event(svg);
svg.attr('height', g.graph().height * initialScale + 40);


// replace the labels
var newLabels = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten', 'eleven']

d3.selectAll(".node")
      .select("tspan")
      .text(function(d,i){
        return newLabels[i];
      });

body {
  font: 300 14px 'Helvetica Neue', Helvetica;
}

.node rect {
  stroke: #333;
  fill: #fff;
}

.edgePath path {
  stroke: #333;
  fill: #333;
  stroke-width: 1.5px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="http://cpettitt.github.io/project/dagre-d3/latest/dagre-d3.js"></script>
<svg width="600" height="600">
<g></g>
</svg>

在D3.js中更改节点的标签数据而不渲染图形

1 个答案: