google-visualization - Google Charts - interpolateNulls 选项不适用于 AnnotationChart

Question

我是 Google Visualizations 的初学者。我无法让“interpolateNulls: true”选项与 AnnotationChart 一起正常工作。如果我将相同的数据集与基本折线图一起使用，它会按预期工作。这是我的代码和结果图表:

    <script type='text/javascript'>
  google.load('visualization', '1.1', {'packages':['Annotationchart']});
  google.setOnLoadCallback(drawChart);
  function drawChart() {
    var data1 = new google.visualization.DataTable(<?=$json1?>);
    var data2 = new google.visualization.DataTable(<?=$json2?>);

    var joinedData = google.visualization.data.join(data1, data2, 'full', [[0, 0]], [1], [1]);

    var chart1 = new google.visualization.AnnotationChart(document.getElementById('chart1'));

    var options = {
      displayAnnotations: false,
  thickness: 2,
  colors: ['red', 'blue'],
  interpolateNulls: true,
      curveType: 'function',
    };

    chart1.draw(joinedData, options);
  }

产生:

/image/2kHv6.jpg

鉴于:

    <script type='text/javascript'>
  google.load('visualization', '1', {'packages':['corechart']});
  google.setOnLoadCallback(drawChart);
  function drawChart() {
    var data1 = new google.visualization.DataTable(<?=$json1?>);
    var data2 = new google.visualization.DataTable(<?=$json2?>);

    var joinedData = google.visualization.data.join(data1, data2, 'full', [[0, 0]], [1], [1]);

    var chart1 = new google.visualization.LineChart(document.getElementById('chart1'));

    var options = {
      displayAnnotations: false,
  thickness: 2,
  colors: ['red', 'blue'],
  interpolateNulls: true,
      curveType: 'function',
    };

    chart1.draw(joinedData, options);
  }

产生:

/image/7YOKv.jpg

我错过了什么？

提前致谢!

Answer 1

AnnotationChart 没有选项 interpolateNulls。请参阅谷歌文档Annotation Chart .