d3中的泡泡树？

Question

在 D3 中是否有 Bubble Tree 的等效实现？在我提供的链接中，气泡树是用 RaphaelJS 和 jQuery 实现的。

Answer 1

您的问题的直接答案是否定的。

使用https://github.com/okfn/bubbletree/tree/master/build 的资源、您已经知道的信息、http://d3js.org/ 提供的信息以及通过 D3 在 GitHub 上的文档，您应该能够为 D3 构想出自己的气泡树！

这是我很久以前用来可视化二叉树数据的一段 JavaScript：

var updateVisual;

updateVisual = function() {
    var drawTree, out;
    drawTree = function(out, node) {
        var col, gray, i, line, lineElt, lines, sub, _results, _results1;
        if (node.lines) {
            out.appendChild(document.createElement("div")).innerHTML = "<b>leaf</b>: " + node.lines.length + " lines, " + Math.round(node.height) + " px";
            lines = out.appendChild(document.createElement("div"));
            lines.style.lineHeight = "6px";
            lines.style.marginLeft = "10px";
            i = 0;
            _results = [];
            while (i < node.lines.length) {
                line = node.lines[i];
                lineElt = lines.appendChild(document.createElement("div"));
                lineElt.className = "lineblock";
                gray = Math.min(line.text.length * 3, 230);
                col = gray.toString(16);
                if (col.length === 1) col = "0" + col;
                lineElt.style.background = "#" + col + col + col;
                console.log(line.height, line);
                lineElt.style.width = Math.max(Math.round(line.height / 3), 1) + "px";
                _results.push(i++);
            }
            return _results;
        } else {
            out.appendChild(document.createElement("div")).innerHTML = "<b>node</b>: " + node.size + " lines, " + Math.round(node.height) + " px";
            sub = out.appendChild(document.createElement("div"));
            sub.style.paddingLeft = "20px";
            i = 0;
            _results1 = [];
            while (i < node.children.length) {
                drawTree(sub, node.children[i]);
                _results1.push(++i);
            }
            return _results1;
        }
    };
    out = document.getElementById("btree-view");
    out.innerHTML = "";
    return drawTree(out, editor.getDoc());
};

只需插入一些圆形元素并对其进行一些操作以在圆形庄园中进行样式设置，您应该有一个很好的程序集！

Answer 2

给你。我没有添加文字或装饰，但这是肉和土豆：

function bubbleChart(config) {
	var aspectRatio = 1,
      margin = { top: 0, right: 0, bottom: 0, left: 0 },
      radiusScale = d3.scale.sqrt(),
      scan = function(f, data, a) {
        a = a === undefined ? 0 : a;
        var results = [a];
        data.forEach(function(d, i) {
          a = f(a, d);
          results.push(a);
        });
        return results;
      },
      colorScale = d3.scale.category20(),
      result = function(selection) {
		selection.each(function(data) {
			var outerWidth = $(this).width(),
          outerHeight = outerWidth / aspectRatio,
          width = outerWidth - margin.left - margin.right,
          height = outerHeight - margin.top - margin.bottom,
          smallestDimension = Math.min(width, height),
          sum = data[1].reduce(function(a, d) {
            return a + d[1];
          }, 0),
          radiusFractions = data[1].map(function(d) {
            return Math.sqrt(d[1] / sum);
          }),
          radiusNormalSum = radiusFractions.reduce(function(a, d) {
            return a + d;
          }, 0),
          scanned = scan(function(a, d) {
            return a + d;
          }, radiusFractions.map(function(d) {
            return d / radiusNormalSum;
          }), 0);
			radiusScale.domain([0, sum]).range([0, smallestDimension / 6]);
      var svg = d3.select(this).selectAll('svg').data([data]),
          svgEnter = svg.enter().append('svg');
			svg.attr('width', outerWidth).attr('height', outerHeight);
			var gEnter = svgEnter.append('g'),
          g = svg.select('g').attr('transform', 'translate(' + margin.left + ' ' + margin.top + ')'),
          circleRing = g.selectAll('circle.ring').data(data[1]),
          circleRingEnter = circleRing.enter().append('circle').attr('class', 'ring');
      circleRing.attr('cx', function(d, i) {
        return smallestDimension / 3 * Math.cos(2 * Math.PI * (scanned[i] + scanned[i + 1]) / 2) + width / 2;
      }).attr('cy', function(d, i) {
        return smallestDimension / 3 * Math.sin(2 * Math.PI * (scanned[i] + scanned[i + 1]) / 2) + height / 2;
      }).attr('r', function(d) {
        return radiusScale(d[1]);
      }).style('fill', function(d) {
        return colorScale(d[0]);
      });
      var circleMain = g.selectAll('circle#main').data([data[0]]),
          circleMainEnter = circleMain.enter().append('circle').attr('id', 'main');
      circleMain.attr('cx', width / 2).attr('cy', height / 2).attr('r', radiusScale(sum)).style('fill', function(d) {
        return colorScale(d);
      });
		});
	};
	result.aspectRatio = function(value) {
		if(value === undefined) return aspectRatio;
		aspectRatio = value;
		return result;
	};
	result.margin = function(value) {
		if(value === undefined) return margin;
		margin = value;
		return result;
	};
	return result;
}

var myBubbleChart = bubbleChart().margin({
  top: 1,
  right: 1,
  bottom : 1,
  left: 1
});
var data = ['Random Names, Random Amounts', [['Immanuel', .4], ['Pascal', 42.9], ['Marisa', 3.3], ['Hadumod', 4.5], ['Folker', 3.2], ['Theo', 4.7], ['Barnabas', 1.0], ['Lysann', 11.1], ['Julia', .7], ['Burgis', 28.2]]];
d3.select('#here').datum(data).call(myBubbleChart);

<div class="container">
  <div class="row">
    <div class="col-xs-12">
      <div id="here"></div>
    </div>
  </div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

Answer 3

您可以使用 the pack layout ，基本上您可以将任何您想要的数据绑定到图形中的形状和自定义参数，以便它们相互尊重。另一种选择是力布局。