如何在谷歌饼图中自动偏移最大的切片？

Question

如何使用谷歌饼图自动找到并偏移最大的切片？

google chart offset the biggest slice

在此示例中，它应该是拥有 3 亿使用者的印地语。

基本上我必须循环数据并返回最高条目的索引。有没有比循环更快的方法？

google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Language', 'Speakers (in millions)'],
    ['Assamese', 13], ['Bengali', 83], ['Bodo', 1.4],
    ['Dogri', 2.3], ['Gujarati', 46], ['Hindi', 300],
    ['Kannada', 38], ['Kashmiri', 5.5], ['Konkani', 5],
    ['Maithili', 20], ['Malayalam', 33], ['Manipuri', 1.5],
    ['Marathi', 72], ['Nepali', 2.9], ['Oriya', 33],
    ['Punjabi', 29], ['Sanskrit', 0.01], ['Santhali', 6.5],
    ['Sindhi', 2.5], ['Tamil', 61], ['Telugu', 74], ['Urdu', 52]
  ]);

  var options = {
    title: 'Indian Language Use',
    legend: 'none',
    pieSliceText: 'label',
    slices: {  5: {offset: 0.1}
            }
  };

  var chart = new google.visualization.PieChart(document.getElementById('piechart'));
  chart.draw(data, options);
}

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart" style="width: 500px; height: 400px;"></div>

Answer 1

利用API，您可以使用

getSortedRows() method

。

data.getSortedRows([{column: 1, desc: true}])

将返回行 ID 的排序数组。索引

将是最大的。然后将其应用到您的

options

变量就很简单了：

google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Language', 'Speakers (in millions)'],
    ['Assamese', 13], ['Bengali', 83], ['Bodo', 1.4],
    ['Dogri', 2.3], ['Gujarati', 46], ['Hindi', 300],
    ['Kannada', 38], ['Kashmiri', 5.5], ['Konkani', 5],
    ['Maithili', 20], ['Malayalam', 33], ['Manipuri', 1.5],
    ['Marathi', 72], ['Nepali', 2.9], ['Oriya', 33],
    ['Punjabi', 29], ['Sanskrit', 0.01], ['Santhali', 6.5],
    ['Sindhi', 2.5], ['Tamil', 61], ['Telugu', 74], ['Urdu', 52]
  ]);

  var options = {
    title: 'Indian Language Use',
    legend: 'none',
    pieSliceText: 'label',
    slices: {}
  };
  options.slices[data.getSortedRows([{column: 1, desc: true}])[0]] = {offset: 0.1};

  var chart = new google.visualization.PieChart(document.getElementById('piechart'));
  chart.draw(data, options);
}

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart" style="width: 500px; height: 400px;"></div>

Answer 2

 google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Language', 'Speakers (in millions)'],
    ['Assamese', 13], ['Bengali', 83], ['Bodo', 1.4],
    ['Dogri', 2.3], ['Gujarati', 46], ['Hindi', 300],
    ['Kannada', 38], ['Kashmiri', 5.5], ['Konkani', 5],
    ['Maithili', 20], ['Malayalam', 33], ['Manipuri', 1.5],
    ['Marathi', 72], ['Nepali', 2.9], ['Oriya', 33],
    ['Punjabi', 29], ['Sanskrit', 0.01], ['Santhali', 6.5],
    ['Sindhi', 2.5], ['Tamil', 61], ['Telugu', 74], ['Urdu', 52]
  ]);

  var options = {
    title: 'Indian Language Use',
    legend: 'none',
    pieSliceText: 'label',
    slices: {}
  };
  arr=data.getSortedRows([{column: 1, desc: true}]);
  obj={};
  t = document.getElementById("topCount").value;
  for (k in arr) {
    if(k<=t-1){ // get top t+1 languages
      obj[arr[k]]={offset: 0.2};
    }
  }   
  options.slices=obj;
  var chart = new google.visualization.PieChart(document.getElementById('piechart'));
  chart.draw(data, options);
}

<body>
most popular languages: 
<select id="topCount" onchange="drawChart()">
  <option value="1">top</option> 
  <option value="2">top 2</option> 
  <option value="3">top 3</option> 
  
</select>  
  <script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart" style="width: 500px; height: 400px;"></div>

Answer 3

 google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Language', 'Speakers (in millions)'],
    ['Assamese', 13], ['Bengali', 83], ['Bodo', 1.4],
    ['Dogri', 2.3], ['Gujarati', 46], ['Hindi', 300],
    ['Kannada', 38], ['Kashmiri', 5.5], ['Konkani', 5],
    ['Maithili', 20], ['Malayalam', 33], ['Manipuri', 1.5],
    ['Marathi', 72], ['Nepali', 2.9], ['Oriya', 33],
    ['Punjabi', 29], ['Sanskrit', 0.01], ['Santhali', 6.5],
    ['Sindhi', 2.5], ['Tamil', 61], ['Telugu', 74], ['Urdu', 52]
  ]);

  var options = {
    title: 'Indian Language Use',
    legend: 'none',
    pieSliceText: 'label',
    slices: {}
  };
  arr=data.getSortedRows([{column: 1, desc: true}]);
  obj={};
  t = document.getElementById("topCount").value;
  for (k in arr) {
    if(k<=t-1){ // get top 3 languages
      obj[arr[k]]={offset: 0.2};
    }
  }   
  options.slices=obj;
  var chart = new google.visualization.PieChart(document.getElementById('piechart'));
  chart.draw(data, options);
}

<body>
most popular languages: 
<select id="topCount" onchange="drawChart()">
  <option value="1">top</option> 
  <option value="2">top 2</option> 
  <option value="3">top 3</option> 
  
</select>  
  <script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart" style="width: 500px; height: 400px;"></div>

如何在谷歌饼图中自动偏移最大的切片？

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最新问题

如何在谷歌饼图中自动偏移最大的切片？

问题描述 投票：0回答：3

3个回答

最新问题

问题描述投票：0回答：3