json表示为d3强制定向网络(json representation for d3 force directed networks)

 我正在尝试使风险的网络可视化。 您可以在http://bl.ocks.org/4683850上查看所需的代码。 
 
 可视化工作，但它需要大量的体力劳动。 我手动调整了json文件，使得连接具有以下形状： 
 
{
    "source": 1,
    "target": 0,
    "value": 5
} 
 
 需要对d3代码做些什么，以便连接由节点的名称决定？ 输入将是： 
 
{
    "source": "WesternAustralia",
    "target": "NewGuinea",
    "value": 5
} 
 
 每当我尝试，我得到以下错误： 
 
Uncaught TypeError: Cannot call method 'push' of undefined 

I am trying to make a network visualisation of RISK. You can view it with the required code at http://bl.ocks.org/4683850. 
 
The visualisation works but it required a lot of manual labor. I manually adapted the json file such that the connections were of the following shape: 
 
{
    "source": 1,
    "target": 0,
    "value": 5
} 
 
What would one need to do to the d3 code such that a connection is determined by the names of the nodes? The input would then be: 
 
{
    "source": "WesternAustralia",
    "target": "NewGuinea",
    "value": 5
} 
 
Whenever I try that I get the following error: 
 
Uncaught TypeError: Cannot call method 'push' of undefined 

原文：https://stackoverflow.com/questions/14629853