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How to add the D3.js library to Power Dashboard Reports and Gadgets. In this example, we will be following this line chart example from Google.

Instructions

Copy the body html from the Google line chart example, add it to a file in the “silprograms” file that ends with “.tpl”. Add “html” tags as pictured below.
Code Block
<html> <body> <div id="curve_chart" style="width: 900px; height: 500px"></div> </body> </html>
Create a new SIL Reporting Gadget, select the .tpl file you just created.
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Add the JavaScript from the Google line chart example

Code Block

google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);

function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Year', 'Sales', 'Expenses'],
    ['2004',  1000,      400],
    ['2005',  1170,      460],
    ['2006',  660,       1120],
    ['2007',  1030,      540]
  ]);

  var options = {
    title: 'Company Performance',
    curveType: 'function',
    legend: { position: 'bottom' }
  };

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

  chart.draw(data, options);
}

Add the following at the end of the JavaScript so that it loads the D3.js library.

Code Block
var script = document.createElement('script'); script.src = "https://www.gstatic.com/charts/loader.js"; document.body.appendChild(script);

Toggle on the “Use custom javascript file?” and select the javascript file created in the previous step.

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Note
Make sure that the script created in step 1 ends in .tpl, or the chart will not render properly

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