D3.js流程图

Question

I am very new to D3.js. 我对D3.js非常陌生。 Please note that version 4 is being used. 请注意，正在使用版本4。

.HTML file .HTML文件

(a lot derived from here ): （很多是从这里得到的）：

<!DOCTYPE html>
<meta charset="UTF-8">
<style>

.node circle {
  fill: #fff;
  stroke: steelblue;
  stroke-width: 3px;
}

.node text {
  font: 12px sans-serif;
}

.link {
  fill: none;
  stroke: #ccc;
  stroke-width: 2px;
}

</style>

<body>

<!-- load the d3.js library --> 
<script src="d3.js"></script>
<script>

var treeData =
  {
    "name": "File 1",
    "children": [
      { 
        "name": "File 2",
        "children": [
          { "name": "File 3",
            "subprocess": [
                {"name": "File 4"}],
            "children" : [
                { "name": "File 5" } ]

          },
          ]
      }
    ]
  };

// Set the dimensions and margins of the diagram
var margin = {top: 0, right: 90, bottom: 30, left: 25},
    width = 800 - margin.left - margin.right,
    height = 200 - margin.top - margin.bottom;

// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
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 + ")");

var i = 0,
    duration = 750, // time between transitions (interaction)
    root;

// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);

// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = 0;
root.y0 = 0;
console.log(root);

// Collapse after the second level
root.children.forEach(collapse);

update(root);

// Collapse the node and all it's children
function collapse(d) {
  if(d.children) {
    d._children = d.children
    d._children.forEach(collapse)
    d.children = null
  }
}

function update(source) {

  // Assigns the x and y position for the nodes
  var treeData = treemap(root);  

  console.log(treeData.descendants());

  // Compute the new tree layout.
  var nodes = treeData.descendants(),
      links = treeData.descendants().slice(1);

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

  // ****************** Nodes section ***************************

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

  // Enter any new modes 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);

  // Add Circle for the nodes
  nodeEnter.append('circle')
      .attr('class', 'node')
      .attr('r', 1e-6)
      .style("fill", function(d) {
          return d._children ? "lightsteelblue" : "#fff";
      });

  // Add labels for the nodes
  nodeEnter.append('text')
      .attr("dy", "2em")
      .attr("x", function(d) {
          return d.children || d._children ? 13 : 13;
      })
      .attr("text-anchor", function(d) {
          return d.children || d._children ? "start" : "start";
      })
      .text(function(d) { return d.data.name; });

  // UPDATE
  var nodeUpdate = nodeEnter.merge(node);

  // Transition to the proper position for the node
  nodeUpdate.transition()
    .duration(duration)
    .attr("transform", function(d) { 
        return "translate(" + d.y + "," + d.x + ")";
     });

  // Update the node attributes and style
  nodeUpdate.select('circle.node')
    .attr('r', 10)
    .style("fill", function(d) {
        return d._children ? "lightsteelblue" : "#fff";
    })
    .attr('cursor', 'pointer');


  // Remove any exiting nodes
  var nodeExit = node.exit().transition()
      .duration(duration)
      .attr("transform", function(d) {
          return "translate(" + source.y + "," + source.x + ")";
      })
      .remove();

  // On exit reduce the node circles size to 0
  nodeExit.select('circle')
    .attr('r', 1e-6);

  // On exit reduce the opacity of text labels
  nodeExit.select('text')
    .style('fill-opacity', 1e-6);

  // ****************** links section ***************************

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

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

  // UPDATE
  var linkUpdate = linkEnter.merge(link);

  // Transition back to the parent element position
  linkUpdate.transition()
      .duration(duration)
      .attr('d', function(d){ return diagonal(d, d.parent) });

  // Remove any exiting links
  var linkExit = link.exit().transition()
      .duration(duration)
      .attr('d', function(d) {
        var o = {x: source.x, y: source.y}
        return diagonal(o, o)
      })
      .remove();

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

  // Creates a curved (diagonal) path from parent to the child nodes
  function diagonal(s, d) {

    path = `M ${s.y} ${s.x}
            L ${d.y} ${d.x}`;

    return path;
  }

  // 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);
  }
}

</script>
</body>

Desired output: 所需的输出：

The font isn't quite the same, but I hope the idea is clear: essentially, I want to create arrows and for the File 4 to show up as above. 字体不太一样，但是我希望这个想法很明确：从本质上讲，我想创建箭头，并让File 4像上面一样显示。 I might be formatting the JSON incorrectly; 我可能没有正确设置JSON格式； if this is the case, please let me know it should be best formatted. 如果是这种情况，请让我知道它应该是最佳格式。

In general, each (first-level) child should point to the right, each subprocess should point downward, and any child contained in a subprocess should point downward as well. 一般来说，每个（第一级）， child应该指向正确的，每个subprocess应该指向下，任何child包含在subprocess应指向下方为好。

Answer 1

NEW ANSWER 新答案

Thinking about this last night and I decided my naive approach is to hackish and brute-force. 考虑到昨晚的这一点，我决定我的幼稚方法是破解和蛮力。 The problem is that by introducing a second array of children (the subprocess array) and placing those nodes directly, you lose the magic of d3.tree . 问题在于，通过引入第二d3.tree组（子流程数组）并将其直接放置，您将失去d3.tree的魔力。 You lose it's ability to walk the parent/child relationship and determine the link structure. 您失去了建立父子关系并确定链接结构的能力。 Instead I propose you keep the single array of children and mark those as a subprocess with an additional property. 相反，我建议您保留单个子项数组，并将其标记为具有附加属性的子进程。 The data structure would look like this: 数据结构如下所示：

var treeData = {
  "name": "File 1",
  "children": [{
    "name": "File 2",
    "children": [{
      "name": "File 3",
      "children": [{
        "name": "File 5"
      }, {
        "name": "File 4",
        "type": "subprocess", //<-- this is a subprocess with children
        "children": [{
          "name": "File 6"
        }]
      }]
    }]
  }]
};

Then you preprocess the data to determine at which depth the subprocess node is; 然后，对数据进行预处理，以确定子过程节点的深度。 much in the same way d3.tree marks nodes at specific depths. d3.tree标记特定深度的节点非常d3.tree 。

root.data['depthToSub'] = 0;
isChildOfProcess(root.children, 0);

// Collapse after the second level
root.children.forEach(collapse);

function isChildOfProcess(children, depth) {
  children.forEach(function(d) {
    d.data['depthToSub'] = depth;
    if (d.data.type && d.data.type === "subprocess") {
      d.data['depthToSub'] = 1;
      isChildOfProcess(d.children, 2);
    } else if (depth > 0 && d.children) {
      isChildOfProcess(d.children, ++depth);
    } else if (d.children) {
      isChildOfProcess(d.children, 0);
    }
  })
}

After this processing you can then "fix" the coordinates the d3.tree generates to create your right-angled structure: 完成此处理后，您可以“修复” d3.tree生成的坐标以创建直角结构：

  nodes.forEach(function(d) {

    d.y = d.depth * 180;

    if (d.parent) {
      d.x = d.parent.x;
    }

    if (d.data.depthToSub) {
      d.y = d.parent.y;
      d.x = (d.data.depthToSub * nodes[0].x) + nodes[0].x;
    }
  });

The drawing then just uses the same code you had before. 然后，图形将使用以前的相同代码。 Here's a running sample: 这是一个正在运行的示例：

 <!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <script data-require="d3@4.0.0" data-semver="4.0.0" src="https://d3js.org/d3.v4.min.js"></script> <style> .node circle { fill: #fff; stroke: steelblue; stroke-width: 3px; } .node text { font: 12px sans-serif; } .link { fill: none; stroke: #ccc; stroke-width: 2px; } .arrow { fill: none; stroke: #ccc; stroke-width: 1px; } </style> </head> <body> <script> var treeData = { "name": "File 1", "children": [{ "name": "File 2", "children": [{ "name": "File 3", "children": [{ "name": "File 5" }, { "name": "File 4", "type": "subprocess", "children": [{ "name": "File 6", "children": [{ "name": "File 7" }] }] }] }] }] }; // Set the dimensions and margins of the diagram var margin = { top: 0, right: 90, bottom: 30, left: 25 }, width = 800 - margin.left - margin.right, height = 800 - margin.top - margin.bottom; // append the svg object to the body of the page // appends a 'group' element to 'svg' // moves the 'group' element to the top left margin 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 + ")"); var defs = svg.append("defs"); defs .append("marker") .attr("id", "arrow") .attr("class", "arrow") .attr("viewBox", "0 -4 10 10") .attr("refX", 12) .attr("refY", 0) .attr("markerWidth", 12) .attr("markerHeight", 12) .attr("orient", "auto") .append("path") .attr("d", "M0,-4L8,0L0,4"); var i = 0, duration = 750, // time between transitions (interaction) root; // declares a tree layout and assigns the size var treemap = d3.tree().size([200, width]); // Assigns parent, children, height, depth root = d3.hierarchy(treeData, function(d) { return d.children; }); root.x0 = 0; root.y0 = 0; root.data['depthToSub'] = 0; isChildOfProcess(root.children, 0); // Collapse after the second level root.children.forEach(collapse); function isChildOfProcess(children, depth) { children.forEach(function(d) { d.data['depthToSub'] = depth; if (d.data.type && d.data.type === "subprocess") { d.data['depthToSub'] = 1; isChildOfProcess(d.children, 2); } else if (depth > 0 && d.children) { isChildOfProcess(d.children, ++depth); } else if (d.children) { isChildOfProcess(d.children, 0); } }) } // Collapse after the second level root.children.forEach(collapse); update(root); // Collapse the node and all it's children function collapse(d) { if (d.children) { d._children = d.children d._children.forEach(collapse) d.children = null } } function update(source) { // Assigns the x and y position for the nodes var treeData = treemap(root); // Compute the new tree layout. var nodes = treeData.descendants(), links = treeData.descendants().slice(1); nodes.forEach(function(d) { dy = d.depth * 180; if (d.parent) { dx = d.parent.x; } if (d.data.depthToSub) { dy = d.parent.y; dx = (d.data.depthToSub * nodes[0].x) + nodes[0].x; } }); // ****************** Nodes section *************************** // Update the nodes... var node = svg.selectAll('g.node') .data(nodes, function(d) { return d.id || (d.id = ++i); }); // Enter any new modes 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); // Add Circle for the nodes nodeEnter.append('circle') .attr('class', 'node') .attr('r', 1e-6) .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; }); // Add labels for the nodes nodeEnter.append('text') .attr("dy", "2em") .attr("x", function(d) { return d.children || d._children ? 13 : 13; }) .attr("text-anchor", function(d) { return d.children || d._children ? "start" : "start"; }) .text(function(d) { return d.data.name; }); // UPDATE var nodeUpdate = nodeEnter.merge(node); // Transition to the proper position for the node nodeUpdate.transition() .duration(duration) .attr("transform", function(d) { return "translate(" + dy + "," + dx + ")"; }); // Update the node attributes and style nodeUpdate.select('circle.node') .attr('r', 10) .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; }) .attr('cursor', 'pointer'); // Remove any exiting nodes var nodeExit = node.exit().transition() .duration(duration) .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; }) .remove(); // On exit reduce the node circles size to 0 nodeExit.select('circle') .attr('r', 1e-6); // On exit reduce the opacity of text labels nodeExit.select('text') .style('fill-opacity', 1e-6); // ****************** links section *************************** // Update the links... var link = svg.selectAll('path.link') .data(links, function(d) { return d.id; }); // Enter any new links at the parent's previous position. var linkEnter = link.enter().insert('path', "g") .attr("class", "link") .attr('d', function(d) { var o = { x: source.x0, y: source.y0 } return diagonal(o, o) }) .attr("marker-end", function(d) { return "url(#arrow)"; }); // UPDATE var linkUpdate = linkEnter.merge(link); // Transition back to the parent element position linkUpdate.transition() .duration(duration) .attr('d', function(d) { return diagonal(d, d.parent) }); // Remove any exiting links var linkExit = link.exit().transition() .duration(duration) .attr('d', function(d) { var o = { x: source.x, y: source.y } return diagonal(o, o) }) .remove(); // Store the old positions for transition. nodes.forEach(function(d) { d.x0 = dx; d.y0 = dy; }); // Creates a curved (diagonal) path from parent to the child nodes function diagonal(s, d) { path = `M ${dy} ${dx} L ${sy} ${sx}`; return path; } // 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); } } </script> </body> </html>

OLD ANSWER 老答案

The naive approach is to check each entering node to see if it has a subprocess and then add the additional elements at that time: 天真的方法是检查每个进入的节点以查看其是否具有子流程，然后在那时添加其他元素：

nodeEnter.each(function(d){
  if (d.data.subprocess){
    var sp = d3.select(this).append('g')
      .datum(d)
      .attr('class','subprocess');

    sp.append('path')
      .attr('d', 'M0,' + (-d.x - subProcessDist) + 'L0,0')
      .style('stroke', '#ccc')
      .style('stroke-width', '2px')
      .attr("marker-end", function(d) {
        return "url(#arrow)";
      });

    sp.append('circle')
      .attr('r', 1e-6)
      .style('fill', '#fff');

    sp.append('text')
      .attr('x', 13)
      .style('text-anchor', 'start')
      .text(function(d){
        return d.data.subprocess[0].name;
      });
  }
});

The arrow heads can be added using the conventional marker approach shown here . 可以使用此处显示的常规标记方法添加箭头。

var defs = svg.append("defs");

defs
  .append("marker")
  .attr("id", "arrow")
  .attr("class", "arrow")
  .attr("viewBox", "0 -4 10 10")
  .attr("refX", 12)
  .attr("refY", 0)
  .attr("markerWidth", 12)
  .attr("markerHeight", 12)
  .attr("orient", "auto")
  .append("path")
  .attr("d", "M0,-4L8,0L0,4");

...

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

Here's full running code with these changes and others to put it all together: 这是完整的运行代码，其中包含这些更改以及将其他更改组合在一起的所有内容：

 <!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <script data-require="d3@4.0.0" data-semver="4.0.0" src="https://d3js.org/d3.v4.min.js"></script> <style> .node circle { fill: #fff; stroke: steelblue; stroke-width: 3px; } .node text { font: 12px sans-serif; } .link { fill: none; stroke: #ccc; stroke-width: 2px; } .arrow{ fill: none; stroke: #ccc; stroke-width: 1px; } </style> </head> <body> <script> var subProcessDist = 15; var treeData = { "name": "File 1", "children": [{ "name": "File 2", "children": [{ "name": "File 3", "subprocess": [{ "name": "File 4" }], "children": [{ "name": "File 5" }] }, ] }] }; // Set the dimensions and margins of the diagram var margin = { top: 0, right: 90, bottom: 30, left: 25 }, width = 800 - margin.left - margin.right, height = 200 - margin.top - margin.bottom; // append the svg object to the body of the page // appends a 'group' element to 'svg' // moves the 'group' element to the top left margin 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 + ")"); var defs = svg.append("defs"); defs .append("marker") .attr("id", "arrow") .attr("class", "arrow") .attr("viewBox", "0 -4 10 10") .attr("refX", 12) .attr("refY", 0) .attr("markerWidth", 12) .attr("markerHeight", 12) .attr("orient", "auto") .append("path") .attr("d", "M0,-4L8,0L0,4"); var i = 0, duration = 750, // time between transitions (interaction) root; // declares a tree layout and assigns the size var treemap = d3.tree().size([height, width]); // Assigns parent, children, height, depth root = d3.hierarchy(treeData, function(d) { return d.children; }); root.x0 = 0; root.y0 = 0; //console.log(root); // Collapse after the second level root.children.forEach(collapse); update(root); // Collapse the node and all it's children function collapse(d) { if (d.children) { d._children = d.children d._children.forEach(collapse) d.children = null } } function update(source) { // Assigns the x and y position for the nodes var treeData = treemap(root); // Compute the new tree layout. var nodes = treeData.descendants(), links = treeData.descendants().slice(1); // Normalize for fixed-depth. nodes.forEach(function(d) { dy = d.depth * 180 }); // ****************** Nodes section *************************** // Update the nodes... var node = svg.selectAll('g.node') .data(nodes, function(d) { return d.id || (d.id = ++i); }); // Enter any new modes 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.each(function(d){ if (d.data.subprocess){ var sp = d3.select(this).append('g') .datum(d) .attr('class','subprocess'); sp.append('path') .attr('d', 'M0,' + (-dx - subProcessDist) + 'L0,0') .style('stroke', '#ccc') .style('stroke-width', '2px') .attr("marker-end", function(d) { return "url(#arrow)"; }); sp.append('circle') .attr('r', 1e-6) .style('fill', '#fff'); sp.append('text') .attr('x', 13) .style('text-anchor', 'start') .text(function(d){ return d.data.subprocess[0].name; }); } }); // Add Circle for the nodes nodeEnter.append('circle') .attr('class', 'node') .attr('r', 1e-6) .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; }); // Add labels for the nodes nodeEnter.append('text') .attr("dy", "2em") .attr("x", function(d) { return d.children || d._children ? 13 : 13; }) .attr("text-anchor", function(d) { return d.children || d._children ? "start" : "start"; }) .text(function(d) { return d.data.name; }); // UPDATE var nodeUpdate = nodeEnter.merge(node); // Transition to the proper position for the node nodeUpdate.transition() .duration(duration) .attr("transform", function(d) { return "translate(" + dy + "," + dx + ")"; }); nodeUpdate.select('.subprocess') .transition() .duration(duration) .attr("transform", function(d) { return "translate(" + (0) + "," + (dx + subProcessDist) + ")"; }); nodeUpdate.select('.subprocess').select('circle').attr('r', 10); // Update the node attributes and style nodeUpdate.select('circle.node') .attr('r', 10) .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; }) .attr('cursor', 'pointer'); // Remove any exiting nodes var nodeExit = node.exit().transition() .duration(duration) .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; }) .remove(); // On exit reduce the node circles size to 0 nodeExit.selectAll('circle') .attr('r', 1e-6); // On exit reduce the opacity of text labels nodeExit.selectAll('text') .style('fill-opacity', 1e-6); // ****************** links section *************************** // Update the links... var link = svg.selectAll('path.link') .data(links, function(d) { return d.id; }); // Enter any new links at the parent's previous position. var linkEnter = link.enter().insert('path', "g") .attr("class", "link") .attr('d', function(d) { var o = { x: source.x0, y: source.y0 } return diagonal(o, o) }) .attr("marker-end", function(d) { return "url(#arrow)"; }); // UPDATE var linkUpdate = linkEnter.merge(link); // Transition back to the parent element position linkUpdate.transition() .duration(duration) .attr('d', function(d) { return diagonal(d, d.parent) }); // Remove any exiting links var linkExit = link.exit().transition() .duration(duration) .attr('d', function(d) { var o = { x: source.x, y: source.y } return diagonal(o, o) }) .remove(); // Store the old positions for transition. nodes.forEach(function(d) { d.x0 = dx; d.y0 = dy; }); // Creates a curved (diagonal) path from parent to the child nodes function diagonal(s, d) { path = `M ${dy} ${dx} L ${sy} ${sx}`; return path; } // 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); } } </script> </body> </html>

D3.js流程图

问题描述

.HTML file .HTML文件

1 个解决方案

解决方案1
2 已采纳 2017-01-09 02:35:55

D3.js流程图

问题描述

.HTML file .HTML文件

1 个解决方案

解决方案1 2 已采纳 2017-01-09 02:35:55

解决方案1
2 已采纳 2017-01-09 02:35:55