1

我正在尝试运行这两个用于在 d3 Javascript 库中可视化图形的文件：

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<style>

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

 .link {
 stroke: #999;
 stroke-opacity: .6;
 }

 </style>
 <body>
 <p> I am there </p>
 <script src="d3.v3.js"></script>
 <script src="d3.v3.min.js"></script>
 <script>

  var width = 960,
  height = 500;

  var color = d3.scale.category20();

  var force = d3.layout.force()
 .charge(-120)
 .linkDistance(30)
 .size([width, height]);

  var svg = d3.select("body").append("svg")
 .attr("width", width)
 .attr("height", height);

 d3.json("miserables.json", function(error, graph) {
 force
  .nodes(graph.nodes)
  .links(graph.links)
  .start();

 var link = svg.selectAll(".link")
  .data(graph.links)
  .enter().append("line")
  .attr("class", "link")
  .style("stroke-width", function(d) { return Math.sqrt(d.value); });

 var node = svg.selectAll(".node")
  .data(graph.nodes)
  .enter().append("circle")
  .attr("class", "node")
  .attr("r", 5)
  .style("fill", function(d) { return color(d.group); })
  .call(force.drag);

 node.append("title")
  .text(function(d) { return d.name; });

 force.on("tick", function() {
 link.attr("x1", function(d) { return d.source.x; })
     .attr("y1", function(d) { return d.source.y; })
     .attr("x2", function(d) { return d.target.x; })
     .attr("y2", function(d) { return d.target.y; });

node.attr("cx", function(d) { return d.x; })
    .attr("cy", function(d) { return d.y; });
});
});

</script>
</body>
</html>

这是名为的 json 文件：miserables.json

{
"nodes":[
{"name":"Myriel","group":1},
{"name":"Napoleon","group":1},
{"name":"Mlle.Baptistine","group":1},
{"name":"Mme.Magloire","group":1},
{"name":"CountessdeLo","group":1},
{"name":"Geborand","group":1},
{"name":"Champtercier","group":1},
{"name":"Cravatte","group":1},
{"name":"Count","group":1},
{"name":"OldMan","group":1},
{"name":"Labarre","group":2},
{"name":"Valjean","group":2},
{"name":"Marguerite","group":3},
{"name":"Mme.deR","group":2},
{"name":"Isabeau","group":2},
{"name":"Gervais","group":2},
{"name":"Tholomyes","group":3},
{"name":"Listolier","group":3},
{"name":"Fameuil","group":3},
{"name":"Blacheville","group":3},
{"name":"Favourite","group":3},
{"name":"Dahlia","group":3},
{"name":"Zephine","group":3},
{"name":"Fantine","group":3},
{"name":"Mme.Thenardier","group":4},
{"name":"Thenardier","group":4},
{"name":"Cosette","group":5},
{"name":"Javert","group":4},
{"name":"Fauchelevent","group":0},
{"name":"Bamatabois","group":2},
{"name":"Perpetue","group":3},
{"name":"Simplice","group":2},
{"name":"Scaufflaire","group":2},
{"name":"Woman1","group":2},
{"name":"Judge","group":2},
{"name":"Champmathieu","group":2},
{"name":"Brevet","group":2},
{"name":"Chenildieu","group":2},
{"name":"Cochepaille","group":2},
{"name":"Pontmercy","group":4},
{"name":"Boulatruelle","group":6},
{"name":"Eponine","group":4},
{"name":"Anzelma","group":4},
{"name":"Woman2","group":5},
{"name":"MotherInnocent","group":0},
{"name":"Gribier","group":0},
{"name":"Jondrette","group":7},
{"name":"Mme.Burgon","group":7},
{"name":"Gavroche","group":8},
{"name":"Gillenormand","group":5},
{"name":"Magnon","group":5},
{"name":"Mlle.Gillenormand","group":5},
{"name":"Mme.Pontmercy","group":5},
{"name":"Mlle.Vaubois","group":5},
{"name":"Lt.Gillenormand","group":5},
{"name":"Marius","group":8},
{"name":"BaronessT","group":5},
{"name":"Mabeuf","group":8},
{"name":"Enjolras","group":8},
{"name":"Combeferre","group":8},
{"name":"Prouvaire","group":8},
{"name":"Feuilly","group":8},
{"name":"Courfeyrac","group":8},
{"name":"Bahorel","group":8},
{"name":"Bossuet","group":8},
{"name":"Joly","group":8},
{"name":"Grantaire","group":8},
{"name":"MotherPlutarch","group":9},
{"name":"Gueulemer","group":4},
{"name":"Babet","group":4},
{"name":"Claquesous","group":4},
{"name":"Montparnasse","group":4},
{"name":"Toussaint","group":5},
{"name":"Child1","group":10},
{"name":"Child2","group":10},
{"name":"Brujon","group":4},
{"name":"Mme.Hucheloup","group":8}
],
"links":[
{"source":1,"target":0,"value":1},
{"source":2,"target":0,"value":8},
{"source":3,"target":0,"value":10},
{"source":3,"target":2,"value":6},
{"source":4,"target":0,"value":1},
{"source":5,"target":0,"value":1},
{"source":6,"target":0,"value":1},
{"source":7,"target":0,"value":1},
{"source":8,"target":0,"value":2},
{"source":9,"target":0,"value":1},
{"source":11,"target":10,"value":1},
{"source":11,"target":3,"value":3},
{"source":11,"target":2,"value":3},
{"source":11,"target":0,"value":5},
{"source":12,"target":11,"value":1},
{"source":13,"target":11,"value":1},
{"source":14,"target":11,"value":1},
{"source":15,"target":11,"value":1},
{"source":17,"target":16,"value":4},
{"source":18,"target":16,"value":4},
{"source":18,"target":17,"value":4},
{"source":19,"target":16,"value":4},
{"source":19,"target":17,"value":4},
{"source":19,"target":18,"value":4},
{"source":20,"target":16,"value":3},
{"source":20,"target":17,"value":3},
{"source":20,"target":18,"value":3},
{"source":20,"target":19,"value":4},
{"source":21,"target":16,"value":3},
{"source":21,"target":17,"value":3},
{"source":21,"target":18,"value":3},
{"source":21,"target":19,"value":3},
{"source":21,"target":20,"value":5},
{"source":22,"target":16,"value":3},
{"source":22,"target":17,"value":3},
{"source":22,"target":18,"value":3},
{"source":22,"target":19,"value":3},
{"source":22,"target":20,"value":4},
{"source":22,"target":21,"value":4},
{"source":23,"target":16,"value":3},
{"source":23,"target":17,"value":3},
{"source":23,"target":18,"value":3},
{"source":23,"target":19,"value":3},
{"source":23,"target":20,"value":4},
{"source":23,"target":21,"value":4},
{"source":23,"target":22,"value":4},
{"source":23,"target":12,"value":2},
{"source":23,"target":11,"value":9},
{"source":24,"target":23,"value":2},
{"source":24,"target":11,"value":7},
{"source":25,"target":24,"value":13},
{"source":25,"target":23,"value":1},
{"source":25,"target":11,"value":12},
{"source":26,"target":24,"value":4},
{"source":26,"target":11,"value":31},
{"source":26,"target":16,"value":1},
{"source":26,"target":25,"value":1},
{"source":27,"target":11,"value":17},
{"source":27,"target":23,"value":5},
{"source":27,"target":25,"value":5},
{"source":27,"target":24,"value":1},
{"source":27,"target":26,"value":1},
{"source":28,"target":11,"value":8},
{"source":28,"target":27,"value":1},
{"source":29,"target":23,"value":1},
{"source":29,"target":27,"value":1},
{"source":29,"target":11,"value":2},
{"source":30,"target":23,"value":1},
{"source":31,"target":30,"value":2},
{"source":31,"target":11,"value":3},
{"source":31,"target":23,"value":2},
{"source":31,"target":27,"value":1},
{"source":32,"target":11,"value":1},
{"source":33,"target":11,"value":2},
{"source":33,"target":27,"value":1},
{"source":34,"target":11,"value":3},
{"source":34,"target":29,"value":2},
{"source":35,"target":11,"value":3},
{"source":35,"target":34,"value":3},
{"source":35,"target":29,"value":2},
{"source":36,"target":34,"value":2},
{"source":36,"target":35,"value":2},
{"source":36,"target":11,"value":2},
{"source":36,"target":29,"value":1},
{"source":37,"target":34,"value":2},
{"source":37,"target":35,"value":2},
{"source":37,"target":36,"value":2},
{"source":37,"target":11,"value":2},
{"source":37,"target":29,"value":1},
{"source":38,"target":34,"value":2},
{"source":38,"target":35,"value":2},
{"source":38,"target":36,"value":2},
{"source":38,"target":37,"value":2},
{"source":38,"target":11,"value":2},
{"source":38,"target":29,"value":1},
{"source":39,"target":25,"value":1},
{"source":40,"target":25,"value":1},
{"source":41,"target":24,"value":2},
{"source":41,"target":25,"value":3},
{"source":42,"target":41,"value":2},
{"source":42,"target":25,"value":2},
{"source":42,"target":24,"value":1},
{"source":43,"target":11,"value":3},
{"source":43,"target":26,"value":1},
{"source":43,"target":27,"value":1},
{"source":44,"target":28,"value":3},
{"source":44,"target":11,"value":1},
{"source":45,"target":28,"value":2},
{"source":47,"target":46,"value":1},
{"source":48,"target":47,"value":2},
{"source":48,"target":25,"value":1},
{"source":48,"target":27,"value":1},
{"source":48,"target":11,"value":1},
{"source":49,"target":26,"value":3},
{"source":49,"target":11,"value":2},
{"source":50,"target":49,"value":1},
{"source":50,"target":24,"value":1},
{"source":51,"target":49,"value":9},
{"source":51,"target":26,"value":2},
{"source":51,"target":11,"value":2},
{"source":52,"target":51,"value":1},
{"source":52,"target":39,"value":1},
{"source":53,"target":51,"value":1},
{"source":54,"target":51,"value":2},
{"source":54,"target":49,"value":1},
{"source":54,"target":26,"value":1},
{"source":55,"target":51,"value":6},
{"source":55,"target":49,"value":12},
{"source":55,"target":39,"value":1},
{"source":55,"target":54,"value":1},
{"source":55,"target":26,"value":21},
{"source":55,"target":11,"value":19},
{"source":55,"target":16,"value":1},
{"source":55,"target":25,"value":2},
{"source":55,"target":41,"value":5},
{"source":55,"target":48,"value":4},
{"source":56,"target":49,"value":1},
{"source":56,"target":55,"value":1},
{"source":57,"target":55,"value":1},
{"source":57,"target":41,"value":1},
{"source":57,"target":48,"value":1},
{"source":58,"target":55,"value":7},
{"source":58,"target":48,"value":7},
{"source":58,"target":27,"value":6},
{"source":58,"target":57,"value":1},
{"source":58,"target":11,"value":4},
{"source":59,"target":58,"value":15},
{"source":59,"target":55,"value":5},
{"source":59,"target":48,"value":6},
{"source":59,"target":57,"value":2},
{"source":60,"target":48,"value":1},
{"source":60,"target":58,"value":4},
{"source":60,"target":59,"value":2},
{"source":61,"target":48,"value":2},
{"source":61,"target":58,"value":6},
{"source":61,"target":60,"value":2},
{"source":61,"target":59,"value":5},
{"source":61,"target":57,"value":1},
{"source":61,"target":55,"value":1},
{"source":62,"target":55,"value":9},
{"source":62,"target":58,"value":17},
{"source":62,"target":59,"value":13},
{"source":62,"target":48,"value":7},
{"source":62,"target":57,"value":2},
{"source":62,"target":41,"value":1},
{"source":62,"target":61,"value":6},
{"source":62,"target":60,"value":3},
{"source":63,"target":59,"value":5},
{"source":63,"target":48,"value":5},
{"source":63,"target":62,"value":6},
{"source":63,"target":57,"value":2},
{"source":63,"target":58,"value":4},
{"source":63,"target":61,"value":3},
{"source":63,"target":60,"value":2},
{"source":63,"target":55,"value":1},
{"source":64,"target":55,"value":5},
{"source":64,"target":62,"value":12},
{"source":64,"target":48,"value":5},
{"source":64,"target":63,"value":4},
{"source":64,"target":58,"value":10},
{"source":64,"target":61,"value":6},
{"source":64,"target":60,"value":2},
{"source":64,"target":59,"value":9},
{"source":64,"target":57,"value":1},
{"source":64,"target":11,"value":1},
{"source":65,"target":63,"value":5},
{"source":65,"target":64,"value":7},
{"source":65,"target":48,"value":3},
{"source":65,"target":62,"value":5},
{"source":65,"target":58,"value":5},
{"source":65,"target":61,"value":5},
{"source":65,"target":60,"value":2},
{"source":65,"target":59,"value":5},
{"source":65,"target":57,"value":1},
{"source":65,"target":55,"value":2},
{"source":66,"target":64,"value":3},
{"source":66,"target":58,"value":3},
{"source":66,"target":59,"value":1},
{"source":66,"target":62,"value":2},
{"source":66,"target":65,"value":2},
{"source":66,"target":48,"value":1},
{"source":66,"target":63,"value":1},
{"source":66,"target":61,"value":1},
{"source":66,"target":60,"value":1},
{"source":67,"target":57,"value":3},
{"source":68,"target":25,"value":5},
{"source":68,"target":11,"value":1},
{"source":68,"target":24,"value":1},
{"source":68,"target":27,"value":1},
{"source":68,"target":48,"value":1},
{"source":68,"target":41,"value":1},
{"source":69,"target":25,"value":6},
{"source":69,"target":68,"value":6},
{"source":69,"target":11,"value":1},
{"source":69,"target":24,"value":1},
{"source":69,"target":27,"value":2},
{"source":69,"target":48,"value":1},
{"source":69,"target":41,"value":1},
{"source":70,"target":25,"value":4},
{"source":70,"target":69,"value":4},
{"source":70,"target":68,"value":4},
{"source":70,"target":11,"value":1},
{"source":70,"target":24,"value":1},
{"source":70,"target":27,"value":1},
{"source":70,"target":41,"value":1},
{"source":70,"target":58,"value":1},
{"source":71,"target":27,"value":1},
{"source":71,"target":69,"value":2},
{"source":71,"target":68,"value":2},
{"source":71,"target":70,"value":2},
{"source":71,"target":11,"value":1},
{"source":71,"target":48,"value":1},
{"source":71,"target":41,"value":1},
{"source":71,"target":25,"value":1},
{"source":72,"target":26,"value":2},
{"source":72,"target":27,"value":1},
{"source":72,"target":11,"value":1},
{"source":73,"target":48,"value":2},
{"source":74,"target":48,"value":2},
{"source":74,"target":73,"value":3},
{"source":75,"target":69,"value":3},
{"source":75,"target":68,"value":3},
{"source":75,"target":25,"value":3},
{"source":75,"target":48,"value":1},
{"source":75,"target":41,"value":1},
{"source":75,"target":70,"value":1},
{"source":75,"target":71,"value":1},
{"source":76,"target":64,"value":1},
{"source":76,"target":65,"value":1},
{"source":76,"target":66,"value":1},
{"source":76,"target":63,"value":1},
{"source":76,"target":62,"value":1},
{"source":76,"target":48,"value":1},
{"source":76,"target":58,"value":1}
]
}

我已经为 mac 10.5.8 安装了 MAMP 来运行这两个文件。在我系统中 MAMP 所在的文件夹内，有一个名为htdocs. 我在里面创建了一个文件夹htdocs并将其命名为：sample并将这两个文件添加到sample. 我还添加了文件：d3.v3.js和d3.v3.min.js. 启动 MAMP 本地服务器后，我插入了 Web Browser http://localhost:8888/sample/。不幸的是，图表没有显示。我认为读取 json file :miserables.json或 javascript file:存在问题d3.v3.js。谁能帮我解决这个问题，因为我不知道为什么不显示图表。您的帮助将不胜感激。

4

1 回答 1

0

您很可能会在 d3 库中遇到用于解析 JSON 数据的外部资源的 XHR 的 CORS 问题。

在本地运行 d3 的一种解决方案是放弃 MAMP，而是使用 JSONP 和 Express/Node.js 以及 jQuery 函数来启动对 JSON 的客户端请求，而不是使用 d3 函数的原始包装器。

必须删除原始 d3.json 包装器并使用来自请求的数据填充邻接图。首先克隆或下载jsonp-d3-experiment并使用node server.js. 当然，您需要全局安装 Node.js，从 Node Packaged Modules (npm) 开始。将您的程序复制到子目录中。

下面是我为共现矩阵修改的代码。我将整个脚本移入$.getJSON并完全删除了该d3.json功能。

<script>
    $.getJSON("http://localhost:8080/data?callback=?", function(result){

      miserables = result;

      var margin = {
          top: 80,
          right: 0,
          bottom: 10,
          left: 80
        },
        width = 720,
        height = 720;

      var x = d3.scale.ordinal().rangeBands([0, width]),
        z = d3.scale.linear().domain([0, 4]).clamp(true),
        c = d3.scale.category10().domain(d3.range(10));

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


        var matrix = [],
          nodes = miserables.nodes,
          n = nodes.length;

        // Compute index per node.
        nodes.forEach(function(node, i) {
          node.index = i;
          node.count = 0;
          matrix[i] = d3.range(n).map(function(j) {
            return {
              x: j,
              y: i,
              z: 0
            };
          });
        });

        // Convert links to matrix; count character occurrences.
        miserables.links.forEach(function(link) {
          matrix[link.source][link.target].z += link.value;
          matrix[link.target][link.source].z += link.value;
          matrix[link.source][link.source].z += link.value;
          matrix[link.target][link.target].z += link.value;
          nodes[link.source].count += link.value;
          nodes[link.target].count += link.value;
        });

        // Precompute the orders.
        var orders = {
          name: d3.range(n).sort(function(a, b) {
            return d3.ascending(nodes[a].name, nodes[b].name);
          }),
          count: d3.range(n).sort(function(a, b) {
            return nodes[b].count - nodes[a].count;
          }),
          group: d3.range(n).sort(function(a, b) {
            return nodes[b].group - nodes[a].group;
          })
        };

        // The default sort order.
        x.domain(orders.name);

        svg.append("rect")
          .attr("class", "background")
          .attr("width", width)
          .attr("height", height);

        var row = svg.selectAll(".row")
          .data(matrix)
          .enter().append("g")
          .attr("class", "row")
          .attr("transform", function(d, i) {
            return "translate(0," + x(i) + ")";
          })
          .each(row);

        row.append("line")
          .attr("x2", width);

        row.append("text")
          .attr("x", -6)
          .attr("y", x.rangeBand() / 2)
          .attr("dy", ".32em")
          .attr("text-anchor", "end")
          .text(function(d, i) {
            return nodes[i].name;
          });

        var column = svg.selectAll(".column")
          .data(matrix)
          .enter().append("g")
          .attr("class", "column")
          .attr("transform", function(d, i) {
            return "translate(" + x(i) + ")rotate(-90)";
          });

        column.append("line")
          .attr("x1", -width);

        column.append("text")
          .attr("x", 6)
          .attr("y", x.rangeBand() / 2)
          .attr("dy", ".32em")
          .attr("text-anchor", "start")
          .text(function(d, i) {
            return nodes[i].name;
          });

        function row(row) {
          var cell = d3.select(this).selectAll(".cell")
            .data(row.filter(function(d) {
              return d.z;
            }))
            .enter().append("rect")
            .attr("class", "cell")
            .attr("x", function(d) {
              return x(d.x);
            })
            .attr("width", x.rangeBand())
            .attr("height", x.rangeBand())
            .style("fill-opacity", function(d) {
              return z(d.z);
            })
            .style("fill", function(d) {
              return nodes[d.x].group == nodes[d.y].group ? c(nodes[d.x].group) : null;
            })
            .on("mouseover", mouseover)
            .on("mouseout", mouseout);
        }

        function mouseover(p) {
          d3.selectAll(".row text").classed("active", function(d, i) {
            return i == p.y;
          });
          d3.selectAll(".column text").classed("active", function(d, i) {
            return i == p.x;
          });
        }

        function mouseout() {
          d3.selectAll("text").classed("active", false);
        }

        d3.select("#order").on("change", function() {
          clearTimeout(timeout);
          order(this.value);
        });

        function order(value) {
          x.domain(orders[value]);

          var t = svg.transition().duration(2500);

          t.selectAll(".row")
            .delay(function(d, i) {
              return x(i) * 4;
            })
            .attr("transform", function(d, i) {
              return "translate(0," + x(i) + ")";
            })
            .selectAll(".cell")
            .delay(function(d) {
              return x(d.x) * 4;
            })
            .attr("x", function(d) {
              return x(d.x);
            });

          t.selectAll(".column")
            .delay(function(d, i) {
              return x(i) * 4;
            })
            .attr("transform", function(d, i) {
              return "translate(" + x(i) + ")rotate(-90)";
            });
        }

        var timeout = setTimeout(function() {
          order("group");
          d3.select("#order").property("selectedIndex", 2).node().focus();
        }, 5000);
      });
</script>

请注意，现在 JSON 数据在 中result，因此最简单的方法是将其分配给miserables.

使用 CDN 或本地副本包括 d3（我在您的示例中没有看到）和此解决方案所需的 jQuery。

现在，您应该能够在本地打开和渲染所有 d3 可视化，而无需将它们托管在服务器上——只需直接从本地文件系统在浏览器中打开它们。

！

于 2015-05-25T15:04:49.027 回答