包括社交网络，知识图谱在内的图数据结构需要通过可视化才能明确其中的关系。
下面给出思知提供的一个简单图数据结构呈现的js代码，其中的关系矩阵可以自己定义，包含四个属性：
- source
- target
- rela
- type
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<style>.link { fill: none; stroke: #666; stroke-width: 1.5px;}#licensing { fill: green;}.link.licensing { stroke: green;}.link.resolved { stroke-dasharray: 0,2 1;}circle { fill: #ccc; stroke: #333; stroke-width: 1.5px;}text { font: 12px Microsoft YaHei; pointer-events: none; text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, 0 -1px 0 #fff, -1px 0 0 #fff;}.linetext { font-size: 12px Microsoft YaHei;}</style> <script src="https://d3js.org/d3.v3.min.js"></script> <script> var links = [ {source: 'OmegaXYZ', target: 'ideas', 'rela': '', type: 'resolved'}, {source: 'OmegaXYZ', target: '技术域', 'rela': '', type: 'resolved'}, {source: 'OmegaXYZ', target: '未分类', 'rela': '', type: 'resolved'}, {source: 'OmegaXYZ', target: '转载', 'rela': '', type: 'resolved'}, {source: 'ideas', target: '常识', 'rela': '', type: 'resolved'}, {source: 'ideas', target: '研究生', 'rela': '', type: 'resolved'}, {source: 'ideas', target: '程序人生', 'rela': '', type: 'resolved'}, {source: 'ideas', target: '随笔', 'rela': '', type: 'resolved'}, {source: '技术域', target: 'APP开发', 'rela': '', type: 'resolved'}, {source: 'APP开发', target: 'Android', 'rela': '', type: 'resolved'}, {source: '技术域', target: 'Web开发', 'rela': '', type: 'resolved'}, {source: 'Web开发', target: 'CSS', 'rela': '', type: 'resolved'}, {source: 'Web开发', target: 'HTML', 'rela': '', type: 'resolved'}, {source: 'Web开发', target: 'JavaScript', 'rela': '', type: 'resolved'}, {source: 'Web开发', target: 'WordPress', 'rela': '', type: 'resolved'}, {source: '技术域', target: '其他', 'rela': '', type: 'resolved'}, {source: '技术域', target: '基础教程', 'rela': '', type: 'resolved'}, {source: '技术域', target: '操作系统', 'rela': '', type: 'resolved'}, {source: '操作系统', target: 'Linux', 'rela': '', type: 'resolved'}, {source: '操作系统', target: 'macOS', 'rela': '', type: 'resolved'}, {source: '操作系统', target: 'Windows', 'rela': '', type: 'resolved'}, {source: '操作系统', target: '操作系统原理', 'rela': '', type: 'resolved'}, {source: '技术域', target: '数据库', 'rela': '', type: 'resolved'}, {source: '数据库', target: 'SQL', 'rela': '', type: 'resolved'}, {source: '技术域', target: '数据结构', 'rela': '', type: 'resolved'}, {source: '技术域', target: '机器学习', 'rela': '', type: 'resolved'}, {source: '机器学习', target: '深度学习', 'rela': '', type: 'resolved'}, {source: '机器学习', target: '特征选择', 'rela': '', type: 'resolved'}, {source: '机器学习', target: '知识图谱', 'rela': '', type: 'resolved'}, {source: '机器学习', target: '社交网络', 'rela': '', type: 'resolved'}, {source: '技术域', target: '汇编语言', 'rela': '', type: 'resolved'}, {source: '技术域', target: '算法', 'rela': '', type: 'resolved'}, {source: '算法', target: '动态规划', 'rela': '', type: 'resolved'}, {source: '算法', target: '多目标优化算法', 'rela': '', type: 'resolved'}, {source: '算法', target: '贪心算法', 'rela': '', type: 'resolved'}, {source: '技术域', target: '编译原理', 'rela': '', type: 'resolved'}, {source: '技术域', target: '网络原理', 'rela': '', type: 'resolved'}, {source: '技术域', target: '计算机图形学', 'rela': '', type: 'resolved'}, {source: '技术域', target: '计算机组成原理', 'rela': '', type: 'resolved'}, {source: '技术域', target: '软件工程', 'rela': '', type: 'resolved'}, {source: '技术域', target: '量化投资', 'rela': '', type: 'resolved'}, {source: '技术域', target: '高级语言', 'rela': '', type: 'resolved'}, {source: '高级语言', target: 'C&C++', 'rela': '', type: 'resolved'}, {source: '高级语言', target: 'JAVA', 'rela': '', type: 'resolved'}, {source: '高级语言', target: 'JavaScript&HTML', 'rela': '', type: 'resolved'}, {source: '高级语言', target: 'Matlab', 'rela': '', type: 'resolved'}, {source: '高级语言', target: 'Python', 'rela': '', type: 'resolved'}, ]; var nodes = {}; links.forEach(function(link) { link.source = nodes[link.source] || (nodes[link.source] = {name: link.source}); link.target = nodes[link.target] || (nodes[link.target] = {name: link.target}); }); var width = 1920, height = 1080; var force = d3.layout.force() .nodes(d3.values(nodes)) .links(links) .size([width, height]) .linkDistance(180) .charge(-1500) .on("tick", tick) .start(); var svg = d3.select("body").append("svg") .attr("width", width) .attr("height", height); var marker= svg.append("marker") .attr("id", "resolved") .attr("markerUnits","userSpaceOnUse") .attr("viewBox", "0 -5 10 10") .attr("refX",32) .attr("refY", -1) .attr("markerWidth", 12) .attr("markerHeight", 12) .attr("orient", "auto") .attr("stroke-width",2) .append("path") .attr("d", "M0,-5L10,0L0,5") .attr('fill','#000000'); var edges_line = svg.selectAll(".edgepath") .data(force.links()) .enter() .append("path") .attr({ 'd': function(d) {return 'M '+d.source.x+' '+d.source.y+' L '+ d.target.x +' '+d.target.y}, 'class':'edgepath', 'id':function(d,i) {return 'edgepath'+i;}}) .style("stroke",function(d){ var lineColor; lineColor="#B43232"; return lineColor; }) .style("pointer-events", "none") .style("stroke-width",0.5) .attr("marker-end", "url(#resolved)" ); var edges_text = svg.append("g").selectAll(".edgelabel") .data(force.links()) .enter() .append("text") .style("pointer-events", "none") .attr({ 'class':'edgelabel', 'id':function(d,i){return 'edgepath'+i;}, 'dx':80, 'dy':0 }); edges_text.append('textPath') .attr('xlink:href',function(d,i) {return '#edgepath'+i}) .style("pointer-events", "none") .text(function(d){return d.rela;}); var circle = svg.append("g").selectAll("circle") .data(force.nodes()) .enter().append("circle") .style("fill",function(node){ var color; var link=links[node.index]; color="#00BFFF"; return color; }) .style('stroke',function(node){ var color; var link=links[node.index]; color="#A254A2"; return color; }) .attr("r", 28) .on("click",function(node) { edges_line.style("stroke-width",function(line){ console.log(line); if(line.source.name==node.name || line.target.name==node.name){ return 4; }else{ return 0.5; } }); }) .call(force.drag); var text = svg.append("g").selectAll("text") .data(force.nodes()) .enter() .append("text") .attr("dy", ".35em") .attr("text-anchor", "middle") .style('fill',function(node){ var color; var link=links[node.index]; color="#000000"; return color; }).attr('x',function(d){ var re_en = /[a-zA-Z]+/g; if(d.name.match(re_en)){ d3.select(this).append('tspan') .attr('x',0) .attr('y',2) .text(function(){return d.name;}); } else if(d.name.length<=4){ d3.select(this).append('tspan') .attr('x',0) .attr('y',2) .text(function(){return d.name;}); }else{ var top=d.name.substring(0,4); var bot=d.name.substring(4,d.name.length); d3.select(this).text(function(){return '';}); d3.select(this).append('tspan') .attr('x',0) .attr('y',-7) .text(function(){return top;}); d3.select(this).append('tspan') .attr('x',0) .attr('y',10) .text(function(){return bot;}); } }); function tick() { circle.attr("transform", transform1); text.attr("transform", transform2); edges_line.attr('d', function(d) { var path='M '+d.source.x+' '+d.source.y+' L '+ d.target.x +' '+d.target.y; return path; }); edges_text.attr('transform',function(d,i){ if (d.target.x<d.source.x){ bbox = this.getBBox(); rx = bbox.x+bbox.width/2; ry = bbox.y+bbox.height/2; return 'rotate(180 '+rx+' '+ry+')'; } else { return 'rotate(0)'; } }); } function linkArc(d) { return 'M '+d.source.x+' '+d.source.y+' L '+ d.target.x +' '+d.target.y } function transform1(d) { return "translate(" + d.x + "," + d.y + ")"; } function transform2(d) { return "translate(" + (d.x) + "," + d.y + ")"; } </script> |
