pdfchartsgoogle-visualizationpygooglechart

How to export google chart in pdf?


I have draw google chart. Now, I want to put button to save the chart in pdf format. I do look from here Save google charts as pdf and other questions available in stack but it doesn't work.

Print png image by google chart already used but it just open a new tab with the png image but it doesnt open the save as pdf window for user.

Do anyone knows any ways to do it?


Solution

  • you can use jsPDF to create a PDF

    use method addImage to add the chart's image uri to the pdf

    see following working snippet...

    google.charts.load('current', {
      packages: ['controls', 'corechart', 'table']
    }).then(function () {
      var data = new google.visualization.DataTable();
      data.addColumn('number', 'X');
      data.addColumn('number', 'y0');
      data.addRows([
        [0, 0],   [1, 10],  [2, 23],  [3, 17],  [4, 18],  [5, 9],
        [6, 11],  [7, 27],  [8, 33],  [9, 40],  [10, 32], [11, 35],
        [12, 30], [13, 40], [14, 42], [15, 47], [16, 44], [17, 48],
        [18, 52], [19, 54], [20, 42], [21, 55], [22, 56], [23, 57],
        [24, 60], [25, 50], [26, 52], [27, 51], [28, 49], [29, 53],
        [30, 55], [31, 60], [32, 61], [33, 59], [34, 62], [35, 65],
        [36, 62], [37, 58], [38, 55], [39, 61], [40, 64], [41, 65],
        [42, 63], [43, 66], [44, 67], [45, 69], [46, 69], [47, 70],
        [48, 72], [49, 68], [50, 66], [51, 65], [52, 67], [53, 70],
        [54, 71], [55, 72], [56, 73], [57, 75], [58, 70], [59, 68],
        [60, 64], [61, 60], [62, 65], [63, 67], [64, 68], [65, 69],
        [66, 70], [67, 72], [68, 75], [69, 80]
      ]);
    
      var container = document.getElementById('chart_div');
      var chart = new google.visualization.LineChart(container);
      var btnSave = document.getElementById('save-pdf');
    
      google.visualization.events.addListener(chart, 'ready', function () {
        btnSave.disabled = false;
      });
    
      btnSave.addEventListener('click', function () {
        var doc = new jsPDF();
        doc.addImage(chart.getImageURI(), 0, 0);
        doc.save('chart.pdf');
      }, false);
    
      chart.draw(data, {
        chartArea: {
          bottom: 24,
          left: 36,
          right: 12,
          top: 48,
          width: '100%',
          height: '100%'
        },
        height: 600,
        title: 'chart title',
        width: 600
      });
    });
    <script src="https://www.gstatic.com/charts/loader.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.5/jspdf.min.js"></script>
    <input id="save-pdf" type="button" value="Save as PDF" disabled />
    <div id="chart_div"></div>