D3.js 力导向图（小气泡围绕中心气泡）

html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>气泡图1</title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">




<!-- 
<script src='https://touzi.sina.com.cn/view/public/js/common.js?id=20160708102080'></script> --
<script src="https://ssl-finance.sina.com.cn/xdemo/touziyi/js/circleForceMore.js" charset="gbk"></script>
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  <script src="jquery-1.11.1.min.js"></script>
    <script src="d3.3.5.js"></script>
    
<script type="text/javascript">
//此处为点击页面打开的链接
new fChart({conc_url:"http://baidu.com",
            stock_url:"http://sina.com",w:1500,h:600}).init();
//构图
function force(option_){

    var width=option_.w,//848,
        height=option_.h,//560,
        padding=3,
        clusterPadding=30,
        maxRadius=50,
        riseColor='#EC4E4B',
        fallColor='#00AE66',
        zeroColor='#969696';
    var n=60,
        m=6;
    //每个群集父节点
    var parentNodes = new Array(m);

    var color = d3.scale.category10().domain(d3.range(m));

    function creatA(n_,m_){
        var arr=[],a=0;

        for(var i=0;i<n_;i++){
            if(i%m_==0 && i!=0)a++;

            arr.push(a);
        }

        return arr;
    }

    var b= creatA(n,m);
    var c=0;
    var nodes = d3.range(n).map(function() {
        var i = b[c],//Math.floor(Math.random() * m),
            r = (c%m)==0 ? 45:10;//Math.sqrt((i + 1) / m * -Math.log(Math.random())) * maxRadius;
        var d = {
            cluster: i,
            radius: r,
            name:'a',
            zf:'0',
            x: Math.cos(i / m * 2 * Math.PI) * 500 + width/2 + Math.random(),
            y: Math.sin(i / m * 2 * Math.PI) * 500 + height/2  + Math.random()
        };
        if (!parentNodes[i] || (r > parentNodes[i].radius)) parentNodes[i] = d;
        c++;
        return d;
    });

    var node;
    var clickStatus=0;
    var chuc=0;
    function _init(){
        var force = d3.layout.force().nodes(nodes)
                    .size([width,height])  
                    .gravity(0)
                    //.linkStrength(0) 
                    .charge(0);

        var svg = d3.select("#chart-svg").append("svg")
                    .attr("width", width)
                    .attr("height", height);
        //var drag = force.drag().on("dragstart", dragstart);
        var dragend = force.drag().on("dragend", dragendX)
                                    .on('dragstart', dragstart);

        var offsetX=0,offsetY=0;
        function dragendX(){
            offsetX-=d3.event.sourceEvent.x;
            offsetY-=d3.event.sourceEvent.y;

            offsetX=Math.abs(offsetX);
            offsetY=Math.abs(offsetY);
        }

        function dragstart(){
            offsetX=d3.event.sourceEvent.x;
            offsetY=d3.event.sourceEvent.y;
        }
        //构建图表和数字
        node = svg.selectAll('g')
                .data(nodes)
                .enter().append("g")
                .style('cursor','pointer')
                .on('click',function(d){
                    var url;
                    //根据半径确定是个股气泡还是题材气泡
                    if(d.radius<45){//个股
                        url=option_.conc_url+d.stockCode;
                    }else{//题材
                        url=option_.stock_url+d.concUniCode;
                    }
                    window.open(url);
                });

        node.append('circle')
            .style("fill",function(d){
                if(d.radius>55) d.radius=44;
                var c='#ffffff';
                if(d.zf>0 && d.radius<45)c=riseColor;
                if(d.zf<0 && d.radius<45)c=fallColor;
                if(d.zf==0&& d.radius<45)c=zeroColor;
                return c;
            })
            .style('stroke',function(d){
                var c=riseColor;
                if(d.zf>0) c=riseColor;
                if(d.zf<0) c=fallColor;
                if(d.zf==0)c=zeroColor;
                return c;
            });

        node.append('text')
            .attr('alignment-baseline','middle')
            .attr('text-anchor','middle')
            .text(function(d){
                return d.name;
            })
            .style('font-size',function(d){
                var size='12px';
                if(d.radius>45)size='12px';
                return size;
            })
            .style('fill',function(d){
                var c='#ffffff';
                if(d.radius>45 && d.zf>0) c=riseColor;
                if(d.radius>45 && d.zf<=0) c=fallColor;
                if(d.radius>45 && d.zf==0) c=zeroColor;
                if(d.radius<45 && d.zf==0) c=zeroColor;
                return c;
            })
            .attr('x',function(d){
                if(this.getComputedTextLength()>d.radius*2 && d.radius<45){

                    var top=d.name.substring(0,2);
                    var bot=d.name.substring(2,d.name.length);

                    d3.select(this).text(function(){return '';});

                    d3.select(this).append('tspan')
                        .attr('x',0)
                        .attr('y',-5)
                        .text(function(){return top;});

                    d3.select(this).append('tspan')
                        .attr('x',0)
                        .attr('y',10)
                        .text(function(){return bot;});
                    return '';
                }
            });

        node.transition()
            .duration(750)
            //.delay(function(d, i) { return i * 5; })
            .select('circle').attrTween("r", function(d) {
                var i = d3.interpolate(0, d.radius);
                return function(t) { return d.radius = i(t);
            };
        });

        force.on('tick',_tick).start();
        force.on('end',function(){
            clickStatus=1;
            chuc=1;
        });
    }

    function _update(){
        //d3.select("#chart-svg").remove();
        document.getElementById('chart-svg').innerHTML='';
        node=null;

        _init();
    }

    function _tick(e){

        var alpha=50 * e.alpha * e.alpha;
        node.each(function(d){
            var cluster = parentNodes[d.cluster];
            // For cluster nodes, apply custom gravity.
            if (cluster === d) return;

            if(chuc==0){
                var bab=(d.cluster%2 == 0)? 1:2;
                var cac= d.cluster>4 ? d.cluster-5:d.cluster;

                cluster.x=cac*option_.w*9/48 + 160;
                cluster.y=bab*option_.h/3; 
            }

            var x = d.x - cluster.x,
                y = d.y - cluster.y,
                l = Math.sqrt(x * x + y * y),
                r = d.radius + cluster.radius;
            if (l != r) {
                l = (l - r) / l * alpha;
                d.x -= x *= l;
                d.y -= y *= l;
                cluster.x += x;
                cluster.y += y;
            }
        })
        .each(function(d){
            var quadtree = d3.geom.quadtree(nodes);
            var alpha2=0.5;

            var r = d.radius + 50 + clusterPadding,
                nx1 = d.x - r,
                nx2 = d.x + r,
                ny1 = d.y - r,
                ny2 = d.y + r;

            quadtree.visit(function(quad, x1, y1, x2, y2) {
                if (quad.point && (quad.point !== d)) {
                    var x = d.x - quad.point.x,
                        y = d.y - quad.point.y,
                        l = Math.sqrt(x * x + y * y),
                        r = d.radius + quad.point.radius + (d.cluster === quad.point.cluster ? padding : clusterPadding);
                    if (l < r) {
                        l = (l - r) / l * alpha2;
                        d.x -= x *= l;
                        d.y -= y *= l;
                        quad.point.x += x;
                        quad.point.y += y;
                    }
                }
                return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1;
            });
        })
        .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
        .select('circle')
        .attr('r',  function(d) { if(d.name==' ')return 0;return d.radius; });
    }

    this.nodes=nodes;
    this.init=_init;
    this.update=_update;
}

//处理数据
function fChart(option_){

    var _chart=new force(option_);//填充图表数据
    


    function _update(){
       _init(true);
    }

    function _init(update_){
        //加载题材列表
        $.post("3.json",null,function(fdata){
            //此处是因为中心气泡的排列规则并未按照数据的顺序，因此在此处写死
            var array=[0,36,12,48,24,30,6,42,18,54];
            for(var i=0;i<10;i++){
                var concInfo=fdata.dataObj[i];
                var x1=array[i];
                _chart.nodes[x1].name   =concInfo.name;
                _chart.nodes[x1].zf     =concInfo.zf;
                _chart.nodes[x1].concUniCode=concInfo.code;
                _chart.nodes[x1].radius=55; //50 + 50 * Math.abs(concInfo.zf)/100 || 5;
                /*绝对值大于10则圆圈显示固定大小
                if(Math.abs(concInfo.zf)>10){
                    _chart.nodes[i*6].radius= 50 + 50 * Math.abs(10)/100 || 5;
                }*/
                //_chart.nodes[i*6].stockNum=concInfo.num;//个股个数,暂时用不到
                //var j=0;
                //i*6-- 0,6,12,18,24,30,36,42,48,54  0,0,K=0;K<5;k++ 1,2,3,4,5 | 1,6 k=5;k<10;k++ 6,7,8,9,10  | 2 k=10;k<15;k++
                //k=i*5;k<i*5+5;k++ 
               console.log(concInfo.name+"--"+x1);
               var y=x1;       
               for(var k=i*5;k<i*5+5;k++){
                   y++;
                   /*
                   if(k%5 == 0){
                       j++;
                   }*/
                   var stockInfo=fdata.dataObj1[k];
                   //console.log(stockInfo.name+"--"+y);
                   //console.log(stockInfo);
                   _chart.nodes[y].name  = stockInfo.name;
                   _chart.nodes[y].zf    = stockInfo.zf;
                   _chart.nodes[y].stockCode= stockInfo.code;
                   _chart.nodes[y].radius=44;// 20 + Math.abs(stockInfo.zf) * 200 || 10;
                   /*绝对值大于10则圆圈显示固定大小
                   if(Math.abs(stockInfo.zf)>10){
                       _chart.nodes[y].radius= 20 + Math.abs(10) * 200 || 10;
                   }*/
                   
               }
               
            }
            console.log(_chart);
            update_?_chart.update():_chart.init();
        },"json");
    
    }

    this.init=_init;
    this.update=_update;
}

</script>


</head>

<body>
    <div id="chart-svg" style="position: relative; font-family: 'Microsoft Yahei', Arial, sans-serif '">
        
    </div>
    
    <div id="chartpopupsk"
        style="position: absolute; color: rgb(255, 255, 255); font-family: 'Microsoft Yahei', Arial, sans-serif; font-size: 12px; min- 185px; height: 60px; display: none; left: 388.212px; top: 635.789px; background-color: rgba(62, 62, 62, 0.8);">
        <div style="float: left; padding: 10px 0 0 10px;">
            <div id="chartpopup_name" style="font-size: 14px; border-right: 1px solid #aaa; padding: 0 5px 0 0;">个股名称暂无</div>
            <div id="chartpopup_code" style="text-align: center; border-right: 1px solid #aaa; padding: 0 5px 0 0;">个股编码暂无</div>
        </div>
        <div style="padding: 10px 10px 0 0; float: right;">
            <div id="chartpopup_price"
                style="text-align: right; font-size: 14px;">价格暂无</div>
            <div style="text-align: right;">
                <span id="chartpopup_zde" style="color: rgb(241, 18, 0);">数字1暂无</span>
                <span id="chartpopup_zdf" style="color: rgb(241, 18, 0);">数字2暂无</span>
            </div>
        </div>
    </div>

    <!--  
    <div id="chartpopupzt"
        style="position: absolute; color: rgb(255, 255, 255); font-family: 'Microsoft Yahei', Arial, sans-serif; font-size: 14px; min- 150px; height: 70px; display: none; padding: 5px 10px 10px; left: 887.245px; top: 527.972px; background-color: rgba(62, 62, 62, 0.8);">
        <div>
            <div id="chartpopup_zt_name"
                style="text-align: center; font-size: 16px; padding: 5px;">概念名称暂无</div>
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                    style="color: rgb(241, 18, 0);">涨幅暂无</span>
            </div>
            <div>
                股票个数<span id="chartpopup_zt_nm">股票个数暂无</span>
            </div>
        </div>
    </div>-->
</body>
</html>
json
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原文地址：https://www.cnblogs.com/xcxcxcxc/p/5900616.html