D3.js可摺疊樹 - 不僅顯示節點名稱

Question

我使用可摺疊樹顯示在此鏈接http://bl.ocks.org/mbostock/4339083中，我需要顯示每個節點的詳細信息。這裏只有它的名字。任何示例或任何鏈接？

Answer 1

只需爲每個附加信息添加新的文本元素並調整dy位置以適當放置它們。在摺疊/展開操作過程中，請不要忘記使用selectAll而不是select來更新文本元素的fill-opacity。

var flare = { 
 
"name": "flare", 
 
    "info1": "flare subtext 1", 
 
    "info2": "flare subtext 2", 
 
"children": [ 
 
    { 
 
    "name": "analytics", 
 
    "info1": "analytics subtext 1", 
 
    "info2": "analytics subtext 2", 
 
    "children": [ 
 
    { 
 
    "name": "cluster", 
 
    "info1": "cluster subtext 1", 
 
    "info2": "cluster subtext 2", 
 
    "children": [ 
 
     {"name": "AgglomerativeCluster", "size": 3938,"info1": "AgglomerativeCluster subtext 1","info2": "AgglomerativeCluster subtext 2"}  
 
    ] 
 
    },  
 
    { 
 
    "name": "optimization", 
 
     "info1": "optimization subtext 1", 
 
    "info2": "optimization subtext 2", 
 
    "children": [ 
 
     {"name": "AspectRatioBanker", "size": 7074,"info1": "AspectRatioBanker subtext 1","info2": "AspectRatioBanker subtext 2"} 
 
    ] 
 
    } 
 
    ] 
 
    }, 
 
    { 
 
    "name": "animate", 
 
     "info1": "animate subtext 1", 
 
    "info2": "animate subtext 2", 
 
    "children": [ 
 
    {"name": "Easing", "size": 17010,"info1": "Easing subtext 1","info2": "Easing subtext 2"}   
 
    ] 
 
    } 
 
] 
 
}; 
 
var margin = {top: 20, right: 120, bottom: 20, left: 120}, 
 
    width = 960 - margin.right - margin.left, 
 
    height = 800 - margin.top - margin.bottom; 
 

 
var i = 0, 
 
    duration = 750, 
 
    root; 
 

 
var tree = d3.layout.tree() 
 
    .size([height, width]); 
 

 
var diagonal = d3.svg.diagonal() 
 
    .projection(function(d) { return [d.y, d.x]; }); 
 

 
var svg = d3.select("body").append("svg") 
 
    .attr("width", width + margin.right + margin.left) 
 
    .attr("height", height + margin.top + margin.bottom) 
 
    .append("g") 
 
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); 
 

 

 
    root = flare; 
 
    root.x0 = height/2; 
 
    root.y0 = 0; 
 

 
    function collapse(d) { 
 
    if (d.children) { 
 
     d._children = d.children; 
 
     d._children.forEach(collapse); 
 
     d.children = null; 
 
    } 
 
    } 
 

 
    root.children.forEach(collapse); 
 
    update(root); 
 

 

 
d3.select(self.frameElement).style("height", "800px"); 
 

 
function update(source) { 
 

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

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

 
    // Update the nodes… 
 
    var node = svg.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("g") 
 
     .attr("class", "node") 
 
     .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; }) 
 
     .on("click", click); 
 

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

 
    nodeEnter.append("text") 
 
     .attr("x", function(d) { return d.children || d._children ? -10 : 10; }) 
 
     .attr("dy", "-.75em") 
 
     .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; }) 
 
     .text(function(d) { return d.name; }) 
 
     .style("fill-opacity", 1e-6); 
 
    
 
    nodeEnter.append("text") 
 
     .attr("x", function(d) { return d.children || d._children ? -10 : 10; }) 
 
     .attr("dy", "1.00em") 
 
     .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; }) 
 
     .text(function(d) { return d.info1; }) 
 
     .style("fill-opacity", 1e-6); 
 
    
 
     nodeEnter.append("text") 
 
     .attr("x", function(d) { return d.children || d._children ? -10 : 10; }) 
 
     .attr("dy", "2.35em") 
 
     .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; }) 
 
     .text(function(d) { return d.info2; }) 
 
     .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.selectAll("text") 
 
     .style("fill-opacity", 1); 
 

 
    // Transition exiting nodes 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.selectAll("text") 
 
     .style("fill-opacity", 1e-6); 
 

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

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

 
    // 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; 
 
    }); 
 
} 
 

 
// Toggle children on click. 
 
function click(d) { 
 
    if (d.children) { 
 
    d._children = d.children; 
 
    d.children = null; 
 
    } else { 
 
    d.children = d._children; 
 
    d._children = null; 
 
    } 
 
    update(d); 
 
}

.node { 
 
    cursor: pointer; 
 
} 
 

 
.node circle { 
 
    fill: #fff; 
 
    stroke: steelblue; 
 
    stroke-width: 1.5px; 
 
} 
 

 
.node text { 
 
    font: 10px sans-serif; 
 
} 
 

 
.link { 
 
    fill: none; 
 
    stroke: #ccc; 
 
    stroke-width: 1.5px; 
 
}

<script src="//d3js.org/d3.v3.min.js"></script>