谷歌圖表 - interpolatingnulls選項不適用於AnnotationChart

Question

我是一個初學者與谷歌的可視化。我在獲取「interpolatingNulls：true」選項與AnnotationChart正常工作時遇到了問題。如果我使用與基本LineChart相同的數據集，它將按預期工作。這裏是我的代碼，並導致圖表：

<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); 
    } 

生產：

http://imgur.com/r5sqtvd

鑑於：

<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); 
    } 

生產：

http://imgur.com/qk79hob

我缺少什麼？

在此先感謝！

Answer 1

AnnotationChart沒有選項interpolateNulls。請參閱google文檔Annotation Chart。