graphTree/graph.html at master · anwenyi/graphTree · GitHub

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<html xmlns:xlink="http://www.w3.org/1999/xlink">
  <head>
    <style>

.node {

  opacity: 0.3;
}

.node:hover {
  opacity: 0.3;
}

.link {
  stroke: #999;
  stroke-opacity: 0.3;
}

    </style>

    <script src="http://d3js.org/d3.v3.min.js"></script>
  </head>
  <body>
    <div id="viz"></div>
    <script>

function name(d) { return d.name; }
function group(d) { return d.group; }

var color = d3.scale.category10();
function colorByGroup(d) { return color(group(d)); }

var width = 960,
    height = 900;

var svg = d3.select('#viz')
    .append('svg')
    .attr('width', width)
    .attr('height', height);

var node, link;

var voronoi = d3.geom.voronoi()
    .x(function(d) { return d.x; })
    .y(function(d) { return d.y; })
    .clipExtent([[-10, -10], [width+10, height+10]]);

function recenterVoronoi(nodes) {
    var shapes = [];
    voronoi(nodes).forEach(function(d) {
        if ( !d.length ) return;
        var n = [];
        d.forEach(function(c){
            n.push([ c[0] - d.point.x, c[1] - d.point.y ]);
        });
        n.point = d.point;
        shapes.push(n);
    });
    return shapes;
}

var force = d3.layout.force()
    .charge(-2000)
    .friction(0.3)
    .linkDistance(100)//here to change link's length
    .size([width, height]);

force.on('tick', function() {
    node.attr('transform', function(d) { return 'translate('+d.x+','+d.y+')'; })
        .attr('clip-path', function(d) { return 'url(#clip-'+d.index+')'; });

    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; });

 /*   var clip = svg.selectAll('.clip')
        .data( recenterVoronoi(node.data()), function(d) { return d.point.index; } );

    clip.enter().append('clipPath')
        .attr('id', function(d) { return 'clip-'+d.point.index; })
        .attr('class', 'clip');
    clip.exit().remove()

    clip.selectAll('path').remove();
    clip.append('path')
        .attr('d', function(d) { return 'M'+d.join(',')+'Z'; });*/
});

d3.json('miserables1.json', function(err, data) {

    data.nodes.forEach(function(d, i) {
        d.id = i;
    });

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

    node = svg.selectAll('.node')

        .data( data.nodes )
      .enter().append('a')   //important change append('g') into ('a')

	  .attr("xlink:target","_blank")
	  .attr("xlink:href", function(d){return d.url;})
	 // .attr("xlink:target","_blank")
        .attr('title', name)
        .attr('class', 'node')
		// .on("click", click)
		 .on("mouseover",mouseover)
		 .on("mouseout",mouseout)
        .call( force.drag );

    node.append('circle')
        .attr('r', 20)   //the r of each circle
        .attr('fill', colorByGroup)
        .attr('fill-opacity', 0.5);

   node.append('circle')
	.attr("xlink:href", function(d){return d.url;})
        .attr('r', 4)
        .attr('stroke', 'black');

	 node.append("text")
	 .attr("xlink:href", function(d){return d.url;})
      .attr("dx", function(d) { return d.children ? -10 : 10; })  //the offset of x coordinate of text
      .attr("dy", ".35em")
      .style("text-anchor", function(d) {  return d.children || d._children ? "end" : "start"; })
      .text(function(d) { return d.name;});

    force
        .nodes( data.nodes )
        .links( data.links )
        .start();


}


);
function click(d) {
  d3.select(this)
        .style('fill', d3.rgb(180, 120, 180));// the function of click event
}
function mouseover(d) {
    d3.select(this).style({opacity:'1.0'});

}
function mouseout(d) {
    d3.select(this).style({opacity:'0.5'});
}

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