【D3.js数据可视化系列教程】（三十）--力导向图之带文字

(1)链接数组

var links = [
  {source: "Microsoft", target: "Amazon", type: "licensing"    ,weight:1,color:1},   
  {source: "Microsoft", target: "HTC", type: "licensing"       ,weight:3,color:4},   
  {source: "Samsung", target: "Apple", type: "suit"            ,weight:4,color:6},   
  {source: "Motorola", target: "Apple", type: "suit"           ,weight:6,color:65},  
  {source: "Nokia", target: "Apple", type: "resolved"          ,weight:3,color:76},  
  {source: "HTC", target: "Apple", type: "suit"                ,weight:8,color:879}, 
  {source: "Kodak", target: "Apple", type: "suit"              ,weight:7,color:989}, 
  {source: "Microsoft", target: "Barnes & Noble", type: "suit" ,weight:9,color:643}, 
  {source: "Microsoft", target: "Foxconn", type: "suit"        ,weight:1,color:54},  
  {source: "Oracle", target: "Google", type: "suit"            ,weight:3,color:54},  
  {source: "Apple", target: "HTC", type: "suit"                ,weight:4,color:45},  
  {source: "Microsoft", target: "Inventec", type: "suit"       ,weight:0,color:43},  
  {source: "Samsung", target: "Kodak", type: "resolved"        ,weight:8,color:243}, 
  {source: "LG", target: "Kodak", type: "resolved"             ,weight:1,color:43},  
  {source: "RIM", target: "Kodak", type: "suit"                ,weight:5,color:13},  
  {source: "Sony", target: "LG", type: "suit"                  ,weight:3,color:351}, 
  {source: "Kodak", target: "LG", type: "resolved"             ,weight:4,color:1},    
  {source: "Apple", target: "Nokia", type: "resolved"          ,weight:1,color:1},   
  {source: "Qualcomm", target: "Nokia", type: "resolved"       ,weight:3,color:4},   
  {source: "Apple", target: "Motorola", type: "suit"           ,weight:4,color:6},   
  {source: "Microsoft", target: "Motorola", type: "suit"       ,weight:6,color:65},  
  {source: "Motorola", target: "Microsoft", type: "suit"       ,weight:3,color:76},  
  {source: "Huawei", target: "ZTE", type: "suit"               ,weight:8,color:879}, 
  {source: "Ericsson", target: "ZTE", type: "suit"             ,weight:7,color:989}, 
  {source: "Kodak", target: "Samsung", type: "resolved"        ,weight:9,color:643}, 
  {source: "Apple", target: "Samsung", type: "suit"            ,weight:1,color:54},  
  {source: "Kodak", target: "RIM", type: "suit"                ,weight:3,color:54},  
  {source: "Nokia", target: "Qualcomm", type: "suit"           ,weight:4,color:45}   
];                                                                
                                                                  
var nodes = {};     var links = [
  {source: "M