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没有出现

2014-02-05 140 views
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我试图复制以下D3可缩放的树形图，以便更好地了解D3是如何工作的D3 Treemap-递归箱：没有出现

https://secure.polisci.ohio-state.edu/faq/d3/zoomabletreemap.htm

TL; DR：我只看到第一JSON对象的两个孩子，而不是孙辈等等。当我点击其中一个孩子时，在我的浏览器中打开一个空的HTML文档（而不是'http://polisci.osu.edu/'，这是您在原始俄亥俄州立树状图中单击叶节点时获得的内容）。

我调试尝试： 在我的控制台，作为一个测试，我已经存储在JSON从“zoomabletreemap.json”作为一个所谓的“树形图”变量的值，我可以像“树形图访问属性。儿童[0]。儿童”。但是当我尝试通过在脚本中添加console.log语句来输出这些相同的孩子时，我得到'undefined'。举例来说，在我的脚本代码标记：

/* write children rectangles */

我添加以下语句的console.log：

g.selectAll(".child") 
    .data(function(d) { 
    console.log(d); 
    console.log(d.children); 
    return d.children || [d]; 
    })

以下是输出：

Object {name: "International Relations", value: 42257, depth: 1, parent: Object, area: 0.6293113718949187…} 
area: 0.6293113718949187 
depth: 1 
dx: 620 
dy: 302.06945850956095 
name: "International Relations" 
parent: Object 
value: 42257 
x: 0 
y: 0 
z: true 
__proto__: Object 

undefined 

Object {name: "Political Methodology", value: 24891, depth: 1, parent: Object, area: 0.37068862810508135…} 
area: 0.37068862810508135 
depth: 1 
dx: 620 
dy: 177.93054149043905 
name: "Political Methodology" 
parent: Object 
value: 24891 
x: 0 
y: 302.06945850956095 
z: false 
__proto__: Object 

undefined

显然第2子节点（“国际关系”和“政治方法论”）正以某种方式被重写，即将所有子节点删除“子”属性。我通过http://prettydiff.com将我的代码与原始源代码进行了比较，以检查代码差异，并且我没有看到任何重大差异。谁能告诉我我做错了什么？

这里有一个JS小提琴，我预期的那样工作，但不会：

http://jsfiddle.net/gvcJ6/

我的HTML和JS脚本是正下方：

<!DOCTYPE html> 
<meta charset="utf-8"> 
<title>Zoomable Treemap</title> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> 
<script type="text/javascript" src="../d3.v3/d3.v3.js"></script> 

<link rel="stylesheet" href="example.css"> 

<p id="chart"> 
<script> 
    var margin = {top: 20, right: 0, bottom: 0, left: 0}, 
    width = 620, 
    height = 500 - margin.top - margin.bottom, 
    formatNumber = d3.format(",d"), 
    transitioning; 

    /* create x and y scales */ 
    var x = d3.scale.linear() 
    .domain([0, width]) 
    .range([0, width]); 

    var y = d3.scale.linear() 
    .domain([0, height]) 
    .range([0, height]); 

    var treemap = d3.layout.treemap() 
    .children(function(d, depth) { 
    return depth ? null : d.children; 
    }) 
    .sort(function(a, b) { return a.value - b.value; }) 
    .ratio(height/width * 0.5 * (1 + Math.sqrt(5))) 
    .round(false); 

/* create svg */ 
    var svg = d3.select("#chart").append("svg") 
    .attr("width", width + margin.left + margin.right) 
    .attr("height", height + margin.bottom + margin.top) 
    .style("margin-left", -margin.left + "px") 
    .style("margin.right", -margin.right + "px") 
    .append("g") 
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")") 
    .style("shape-rendering", "crispEdges"); 

    var grandparent = svg.append("g") 
    .attr("class", "grandparent"); 

    grandparent.append("rect") 
    .attr("y", -margin.top) 
    .attr("width", width) 
    .attr("height", margin.top); 

    grandparent.append("text") 
    .attr("x", 6) 
    .attr("y", 6 - margin.top) 
    .attr("dy", ".75em"); 

    /* load in data, display root */ 
d3.json("zoomabletreemap.json", function(root) { 


    initialize(root); 
    accumulate(root); 
    layout(root); 
    display(root); 

    function initialize(root) { 
    root.x = root.y = 0; 
    root.dx = width; 
    root.dy = height; 
    root.depth = 0; 
    } 

    // Aggregate the values for internal nodes. This is normally done by the 
    // treemap layout, but not here because of our custom implementation. 
    function accumulate(d) { 
    return d.children 
    ? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 0) 
    : d.value; 
    } 

    // Compute the treemap layout recursively such that each group of siblings 
    // uses the same size (1×1) rather than the dimensions of the parent cell. 
    // This optimizes the layout for the current zoom state. Note that a wrapper 
    // object is created for the parent node for each group of siblings so that 
    // the parent’s dimensions are not discarded as we recurse. Since each group 
    // of sibling was laid out in 1×1, we must rescale to fit using absolute 
    // coordinates. This lets us use a viewport to zoom. 
    function layout(d) { 
    if (d.children) { 
     treemap.nodes({children: d.children}); 
     d.children.forEach(function(c) { 
     c.x = d.x + c.x * d.dx; 
     c.y = d.y + c.y * d.dy; 
     c.dx *= d.dx; 
     c.dy *= d.dy; 
     c.parent = d; 
     layout(c); 
     }); 
    } 
    } 

    /* display show the treemap and writes the embedded transition function */ 
    function display(d) { 
    /* create grandparent bar at top */ 
    grandparent 
     .datum(d.parent) 
     .on("click", transition) 
     .select("text") 
     .text(name(d)); 

    var g1 = svg.insert("g", ".grandparent") 
     .datum(d) 
     .attr("class", "depth"); 
    /* add in data */ 
    var g = g1.selectAll("g") 
     .data(d.children) 
     .enter().append("g"); 

    /* transition on child click */ 
    g.filter(function(d) { return d.children; }) 
     .classed("children", true) 
     .on("click", transition); 

    /* write children rectangles */ 
    g.selectAll(".child") 
     .data(function(d) { 
     return d.children || [d]; 
     }) 
     .enter().append("rect") 
     .attr("class", "child") 
     .call(rect); 

    /* write parent rectangle */ 
    g.append("rect") 
     .attr("class", "parent") 
     .call(rect) 
     /* open new window based on the json's URL value for leaf nodes */ 
     /* Chrome displays this on top */ 
     .on("click", function(d) { 
     if(!d.children){ 
      window.open(d.url); 
     } 
     }) 
     .append("title") 
     .text(function(d) { return formatNumber(d.value); }); 

    /* Adding a foreign object instead of a text object, allows for text wrapping */ 
    g.append("foreignObject") 
     .call(rect) 
     /* open new window based on the json's URL value for leaf nodes */ 
     /* Firefox displays this on top */ 
     .on("click", function(d) { 
     if(!d.children){ 
      window.open(d.url); 
     } 
     }) 
     .attr("class","foreignobj") 
     .append("xhtml:div") 
     .attr("dy", ".75em") 
     .html(function(d) { return d.name; }) 
     .attr("class","textdiv"); //textdiv class allows us to style the text easily with CSS 
     /* create transition function for transitions */ 

    function transition(d) { 
     if (transitioning || !d) return; 
     transitioning = true; 

     var g2 = display(d), 
     t1 = g1.transition().duration(750), 
     t2 = g2.transition().duration(750); 

     // Update the domain only after entering new elements. 
     x.domain([d.x, d.x + d.dx]); 
     y.domain([d.y, d.y + d.dy]); 

     // Enable anti-aliasing during the transition. 
     svg.style("shape-rendering", null); 

     // Draw child nodes on top of parent nodes. 
     svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; }); 

     // Fade-in entering text. 
     g2.selectAll("text").style("fill-opacity", 0); 
     g2.selectAll("foreignObject div").style("display", "none"); /*added*/ 

     // Transition to the new view. 
     t1.selectAll("text").call(text).style("fill-opacity", 0); 
     t2.selectAll("text").call(text).style("fill-opacity", 1); 
     t1.selectAll("rect").call(rect); 
     t2.selectAll("rect").call(rect); 

     t1.selectAll(".textdiv").style("display", "none"); /* added */ 
     t1.selectAll(".foreignobj").call(foreign); /* added */ 
     t2.selectAll(".textdiv").style("display", "block"); /* added */ 
     t2.selectAll(".foreignobj").call(foreign); /* added */ 

     // Remove the old node when the transition is finished. 
     t1.remove().each("end", function() { 
     svg.style("shape-rendering", "crispEdges"); 
     transitioning = false; 
     }); 

    }//endfunc transition 

    return g; 
    }//endfunc display 

    function text(text) { 
    text.attr("x", function(d) { return x(d.x) + 6; }) 
    .attr("y", function(d) { return y(d.y) + 6; }); 
    } 

    function rect(rect) { 
    rect.attr("x", function(d) { return x(d.x); }) 
    .attr("y", function(d) { return y(d.y); }) 
    .attr("width", function(d) { return x(d.x + d.dx) - x(d.x); }) 
    .attr("height", function(d) { return y(d.y + d.dy) - y(d.y); }); 
    }  

    function foreign(foreign){ /* added */ 
    foreign.attr("x", function(d) { return x(d.x); }) 
    .attr("y", function(d) { return y(d.y); }) 
    .attr("width", function(d) { return x(d.x + d.dx) - x(d.x); }) 
    .attr("height", function(d) { return y(d.y + d.dy) - y(d.y); }); 
    } 

    function name(d) { 
    return d.parent ? name(d.parent) + "." + d.name : d.name; 
    } 
}); 


</script>

我的代码引用文件'zoomabletreemap.json'，其中包含以下代码：

{ 
"name": "Sitemap", 
"children": [ 
    { 
    "name": "International Relations", 
    "children": [ 
    { 
    "name": "Systemic Theory", 
    "children": [ 
     {"name": "Great Powers", "value": 3938, "url": "http://polisci.osu.edu"}, 
     {"name": "Systemic Politics", "value": 743, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "International Conflict", 
    "children": [ 
     {"name": "Systemic Politics", "value": 3416, "url": "http://google.com"}, 
     {"name": "Causal Complexity", "value": 3416, "url": "http://bing.com"}, 
     {"name": "Deadly Doves", "value": 3416, "url": "http://polisci.osu.edu"}, 
     {"name": "Politcal Irrelevance", "value": 3416, "url": "http://polisci.osu.edu"}, 
     {"name": "The Fog of Peace: Uncertainty, War, and the Resumption of International Crises, <i>manuscript</i>", "value": 3416, "url": "http://polisci.osu.edu"}, 
     {"name": "Greed or Opportunity? Refining our Understanding of the Origins of Civil Wars, <i>manuscript</i>", "value": 3416, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "Foreign Policy", 
    "children": [ 
     {"name": "The Myth of American Isolationism", "value": 3416, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "Courses", 
    "children": [ 
     {"name": "IS 201", "value": 3416, "url": "http://polisci.osu.edu"}, 
     {"name": "PS 544", "value": 3416, "url": "http://polisci.osu.edu"}, 
     {"name": "PS 848", "value": 3416, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "Dataverse", 
    "children": [ 
     {"name": "Dataverse", "value": 3416, "url": "http://polisci.osu.edu"} 
    ] 
    } 
    ] 
    }, 
    { 
    "name": "Political Methodology", 
    "children": [ 
    { 
    "name": "Theory and Methdology", 
    "children": [ 
     {"name": "Interactions and Causal Complexity", "value": 3938, "url": "http://polisci.osu.edu"}, 
     {"name": "Theory and Methodology", "value": 743, "url": "http://polisci.osu.edu"}, 
     {"name": "Software", "value": 743, "url": "http://polisci.osu.edu"}, 
     {"name": "Courses", "value": 743, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "Insteractions and Causal Cmplexity", 
    "children": [ 
     {"name": "Hypothesis Testing and Multiplicative Interation Terms", "value": 3938, "url": "http://polisci.osu.edu"}, 
     { 
     "name": "Causal Complexity", 
     "children": [ 
     {"name": "Causal Complexity and the Study of Politics", "value": 3938, "url": "http://polisci.osu.edu"}, 
     {"name": "Political Irrelevance", "value": 743, "url": "http://polisci.osu.edu"}, 
     {"name": "boolean3 package for R", "value": 743, "url": "http://polisci.osu.edu"} 
     ] 
     } 
    ] 
    }, 
    { 
    "name": "Software", 
    "children": [ 
     {"name": "boolean3 package for R", "value": 3938, "url": "http://polisci.osu.edu"} 
    ] 
    }, 
    { 
    "name": "Courses", 
    "children": [ 
     {"name": "PS 4781", "value": 3938, "url": "http://polisci.osu.edu"}, 
     {"name": "PS 867", "value": 743, "url": "http://polisci.osu.edu"}, 
     {"name": "PS 846", "value": 743, "url": "http://polisci.osu.edu"} 
    ] 
    } 
    ]  
    } 
] 
}

来源

2014-02-05 Richie Thomas

+0

那么你有什么改相比，这个例子？ –

+0

我对原始源代码所做的唯一更改是删除其Google Analytics脚本，将CSS样式提取到外部样式表中，并通过外部托管脚本而不是本地托管脚本链接到D3和jQuery。 奇怪的是，当我复制源代码并尝试在本地运行时，我得到了与我自己的代码一样的错误。但是，当我打开俄亥俄州状态URL（它是该代码的来源）时，它工作正常。 –

+0

似乎适合我 - https://vida.io/documents/ak9dFhxvopNQGGhGd –

回答

0

最后，我从D3.js至2版的最新版本切换所以我把我从D3的网站得到的代码：

<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>

...它切换到这一点：

<script src="http://d3js.org/d3.v2.min.js" charset="utf-8"></script>

它的工作很棒！

来源

2014-02-05 23:05:41

0

正面临着同样的问题，但找到了一个解决方案：http://bost.ocks.org/mike/treemap/

http://jsfiddle.net/sreebabu/65ypcpg9/

变化 “孩子” 到 “_children”

例如：

function accumulate(d) { 
    return (d._children = d.children) 
    ? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 0) 
    : d.value; 
    } 

var g = g1.selectAll("g") 
     .data(d._children) // from d.children to d._children 
     .enter().append("g");

来源

2015-01-05 20:45:21 Sree

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