Question

我在working exmaple中找到了此question。我用这个例子让我自己的树能够缩放和平移但是有一些bug。所以这是我的问题。

如果我在后台点击，我该怎么做才能改变线条？
点击后，如何才能在标准缩放和平移位置显示树节点。这是因为我的点击事件触发更新，但我没有找到解决方案。以下是工作示例的更新函数：

更新（根）;

function update(source) {
  var duration = d3.event && d3.event.altKey ? 5000: 500;

  // Compute the new tree layout.
  var nodes = tree.nodes(root).reverse();

  // Normalize for fixed-depth.
  nodes.forEach(function (d) { d.y = d.depth * 180; });

  // Update the nodes...
  var node = vis.selectAll("g.node")
      .data(nodes, function(d) { return d.id || (d.id = ++i); });

  // Enter any new nodes at the parent's previous position.
  var nodeEnter = node.enter().append("svg:g")
      .attr("class", "node")
      .attr("transform", function(d) {return "translate(" + source.y0 + "," + source.x0 + ")"; })
      .on("click", function(d) {
          toggle(d);
          update(d);
          if (d['info']) {
              playvid(d['info']);
          }
      });

  nodeEnter.append("svg:circle")
      .attr("r", 1e-6)
      .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });

  nodeEnter.append("svg:text")
      //.attr("y", function(d) { return d.children || d._children ? -10 : 10; })
      //.attr("dx", ".35em")
      .attr("x", function(d) { return d.children || d._children ? -10 : 10; })
      .attr("dy", ".35em")
      .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })
      .text(function(d) { return d.name; })
      .style("fill-opacity", 1e-6);

  // Transition nodes to their new position.
  var nodeUpdate = node.transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });

  nodeUpdate.select("circle")
      .attr("r", 4.5)
      .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });

  nodeUpdate.select("text")
      .style("fill-opacity", 1);

  // Transition exiting ndoes to the parent's new position.
  var nodeExit = node.exit().transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
      .remove();

  nodeExit.select("circle")
      .attr("r", 1e-6);
  nodeExit.select("text")
      .style("fill-opacity", 1e-6);

  // Update the links...
  var link = vis.selectAll("path.link")
      .data(tree.links(nodes), function(d) { return d.target.id; });

  // Enter any new links at hte parent's previous position
  link.enter().insert("svg:path", "g")
      .attr("class", "link")
      .attr("d", function(d) {
        var o = {x: source.x0, y: source.y0};
        return diagonal({source: o, target: o});
      })
      .transition()
        .duration(duration)
        .attr("d", diagonal);

  // Transition links to their new position.
  link.transition()
      .duration(duration)
      .attr("d", diagonal);

  // Transition exiting nodes to the parent's new position.
  link.exit().transition()
      .duration(duration)
      .attr("d", function(d) {
        var o = {x: source.x, y: source.y};
        return diagonal({source: o, target: o});
      })
      .remove();

  // Stash the old positions for transition.
  nodes.forEach(function(d) {
    d.x0 = d.x;
    d.y0 = d.y;
  });
}

感谢您的时间。

Answer 1

对于第一个问题，您需要仅将缩放行为附加到节点和行。对于第二个问题，听起来好像你想要正常（即非语义）缩放。

d3崩溃树 - 语义缩放和泛例 - 问题

1 个答案: