我是JS的新手,组织数据的概念让我觉得有点困难,试图从特定的数组格式中获取数据(因为这是我必须使用的)并将其输出为另一种特定的JSON格式.
这是为了将数据传递给D3 sankey模块
https://github.com/d3/d3-plugins/blob/master/sankey/sankey.js
真的,我完全迷失了！
我在这里做了一个小提琴：
https://jsfiddle.net/adamdavi3s/kw3jtzx4/
以下是所需数据和输出的示例
var data= [
{"source":"Agricultural 'waste'","target":"Bio-conversion","value":"124.2729"},{"source":"Bio-conversion","target":"Electricity grid","value":"0.597"},"target":"Losses","value":"26.862"},"target":"Liquid","value":"280.322"},{"source":"Losses","value":"280.322"}
];
var output= {
"nodes":[
{"name":"Agricultural 'waste'"},{"name":"Bio-conversion"},{"name":"Electricity grid"},{"name":"Losses"},{"name":"Liquid"}
],"links":[
{"source":0,"target":1,"value":124.729},{"source":1,"target":2,"value":0.597},"target":3,"value":26.862},"target":4,"value":280.322},{"source":3,"value":280.322}
]
};
这是我的代码来自小提琴
var data=[{"source":"Agricultural 'waste'","value":"280.322"}
];
var sourceArray=[];
for (var i=0; i 最佳答案
Array.reduce()非常适合这个用例;)
原文链接：https://www.f2er.com/jquery/428441.html看一看.
var data=[{"source":"Agricultural 'waste'","value":"280.322"}
];
var output = data.reduce(function(result,item){
for(key in search = ['source','target']) {
var value = item[search[key]];
if(! result.index.hasOwnProperty(value)){
result.index[value] = Object.keys(result.index).length;
result.nodes.push({name: value});
}
}
result.links.push({
source: result.index[item.source],target: result.index[item.target],value: Number(item.value)
});
return result;
},{nodes: [],links: [],index: {}});
delete output.index;
console.log(output);