AngularJS分组平均

我正在做一个测验，完成后会显示雷达图。测验共有15个问题，但图表仅显示约10个数据点

将部分答案分组，然后返回该组的平均分数

我需要数据返回一个数组，该数组使用10个数据点与图形匹配

然而，由于我有超过10个问题，我需要分组，然后平均出这些值

我在想一种逻辑

我知道我需要对答案进行循环，然后根据diagramGroupId对答案进行潜在分组，计算出平均值，然后将其添加回diagrams数据集数组

这在我当前的控制器onSubmit函数中

$scope.questions.forEach(function (q) {
    answers.push({
//Deal with the results of the quiz
'SurveyId': $scope.survey.Id, 
'QuestionId': q.Id, 
'Answered': q.Answered});

    // radar Diagram dataset 2
    userScoreTmp.push({'diagramGroupId': q.diagramGroupId, 'score': q.Answered});
    /*[
        {diagramGroupId:1, score:4},
        {diagramGroupId:2, score:3},
        {diagramGroupId:1, score:7},
        {diagramGroupId:3, score:4},
        {diagramGroupId:4, score:1},
        {diagramGroupId:5, score:4},
        {...}
      ]
      //which would turn into the following array if I converted it to an array
      [4,3,7,4,1,4]

      //I need the following (values grouped and sorted by diagramGroupId and then averaged)
      [7.5,3,4,1,4,...] */
  });

这是我使用的图形对象

JSON

---

真正的问题是什么？这些组是在哪里定义的？我目前有一个约15个值的数组。我需要将一些值组合起来创建一个平均值，然后添加到一个仅显示10个值的图形的数组中。这些组当前在我的问题JSON数据中定义，我已经给每个问题分配了一个图表，我可以在查看数据时使用它进行循环。我将尝试更新问题，使其更加明显

$scope.questions.forEach(function (q) {
    answers.push({
//Deal with the results of the quiz
'SurveyId': $scope.survey.Id, 
'QuestionId': q.Id, 
'Answered': q.Answered});

    // radar Diagram dataset 2
    userScoreTmp.push({'diagramGroupId': q.diagramGroupId, 'score': q.Answered});
    /*[
        {diagramGroupId:1, score:4},
        {diagramGroupId:2, score:3},
        {diagramGroupId:1, score:7},
        {diagramGroupId:3, score:4},
        {diagramGroupId:4, score:1},
        {diagramGroupId:5, score:4},
        {...}
      ]
      //which would turn into the following array if I converted it to an array
      [4,3,7,4,1,4]

      //I need the following (values grouped and sorted by diagramGroupId and then averaged)
      [7.5,3,4,1,4,...] */
  });

  var labels = [];
  var optimum = [];

  $scope.radar.forEach(function (d) {
    labels.push(d.Name);
    optimum.push(d.Optimum);
  });

$scope.diagram = {
    labels: labels,
    datasets: [
      {
        label: 'My First dataset',
        fillColor: 'rgba(220,220,220,0.2)',
        strokeColor: 'rgba(220,220,220,1)',
        pointColor: 'rgba(220,220,220,1)',
        pointStrokeColor: '#fff',
        pointHighlightFill: '#fff',
        pointHighlightStroke: 'rgba(220,220,220,1)',
        data: optimum //[7, 7, 7, 7, 7, 7, 7, 7, 7, 7]
      },
      {
        label: 'My Second dataset',
        fillColor: 'rgba(151,187,205,0.2)',
        strokeColor: 'rgba(151,187,205,1)',
        pointColor: 'rgba(151,187,205,1)',
        pointStrokeColor: '#fff',
        pointHighlightFill: '#fff',
        pointHighlightStroke: 'rgba(151,187,205,1)',
        data: usersData //could be something like [7, 2, 7, 3, 4, 1, 4, 7, 7, 7]
      }
    ]
  };

//A single question object from my JSON file, contains 15-20 questions
questions: [{
  "Id" : 1,
  "Name" : "Question 1?",
  "Options" : [
    {
      "Id" : 1,
      "Name" : "Yes",
      "Score" : 7
    },
    {
      "Id" : 2,
      "Name" : "No",
      "Score" : 1
    },
    {
      "Id" : 1058,
      "Name" : "Unsure",
      "Score" : 3
    }
  ],
  "QuestionType" : "radio",
  "Required" : true,
  "Handle" : "Q1",
  "diagramGroupId" : 1
}];

 // radar object, contains 10 objects
 // used to display the radar labels and initial dataset points 
"radar": [
{
  "Id": 1,
  "Name": "Question 1",
  "Optimum": 7
},
{
  "Id": 2,
  "Name": "Question 2",
  "Optimum": 7
},
{
  "Id": 3,
  "Name": "Question 3",
  "Optimum": 7
}