javascript - Insert Links into Google Charts api data?

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javascript - Insert Links into Google Charts api data?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

I have been playing around with Google charts quite a bit over in the google charts play ground here:

Link

The code I have been playing with is this:

function drawVisualization() {
  // Create and populate the data table.
  var data = google.visualization.arrayToDataTable([
    ['Year', 'Austria'],
    ['2003',  1336060],
    ['2004',  1538156],
    ['2005',  1576579],
    ['2006',  1600652],
    ['2007',  1968113],
    ['2008',  1901067]
  ]);

  // Create and draw the visualization.
  new google.visualization.BarChart(document.getElementById('visualization')).
      draw(data,
           {title:"Yearly Coffee Consumption by Country",
            width:600, height:400,
            vAxis: {title: "Year"},
            hAxis: {title: "Cups"}}
      );
}

and that gives me a nice chart that looks like this:

enter image description here

I am trying to have this chart fit the needs of my website, and to do this, I need to make the bar names on the left links to another page. So for example 2003 would be a link that the user can click ans so would 2004 etc.

I tried to do something like this:

function drawVisualization() {
  // Create and populate the data table.
  var data = google.visualization.arrayToDataTable([
    ['Year', 'Austria'],
    ['<a href="url">Link text</a>',  1336060],
    ['2004',  1538156],
    ['2005',  1576579],
    ['2006',  1600652],
    ['2007',  1968113],
    ['2008',  1901067]
  ]);

  // Create and draw the visualization.
  new google.visualization.BarChart(document.getElementById('visualization')).
      draw(data,
           {title:"Yearly Coffee Consumption by Country",
            width:600, height:400,
            vAxis: {title: "Year"},
            hAxis: {title: "Cups"}}
      );
}

But I could only hope for it to be that easy and it wasn't. Does anyone know if this is at all possible?

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1 Answer

深蓝 · Answer 1 · 2021-10-23T17:55:55+0000

Manzoid's answer is good, but "some assembly is still required" as it just displays an alert box rather than following the link. Here is a more complete answer BUT it makes the bars clickable rather than the labels. I create a DataTable that includes the links then create a DataView from that to select the columns I want to display. Then when the select event occurs, I just retrieve the link from the original DataTable.

<html>
  <head>
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">
      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
          ['Year', 'link', 'Austria'],
          ['2003', 'http://en.wikipedia.org/wiki/2003',  1336060],
          ['2004', 'http://en.wikipedia.org/wiki/2004', 1538156],
          ['2005', 'http://en.wikipedia.org/wiki/2005', 1576579],
          ['2006', 'http://en.wikipedia.org/wiki/2006', 1600652],
          ['2007', 'http://en.wikipedia.org/wiki/2007', 1968113],
          ['2008', 'http://en.wikipedia.org/wiki/2008', 1901067]             
        ]);
       var view = new google.visualization.DataView(data);
       view.setColumns([0, 2]);

       var options = {title:"Yearly Coffee Consumption by Country",
            width:600, height:400,
            vAxis: {title: "Year"},
            hAxis: {title: "Cups"}};

       var chart = new google.visualization.BarChart( 
           document.getElementById('chart_div'));
       chart.draw(view, options);

       var selectHandler = function(e) {
          window.location = data.getValue(chart.getSelection()[0]['row'], 1 );
       }

       google.visualization.events.addListener(chart, 'select', selectHandler);
      }
    </script>
  </head>
  <body>
    <div id="chart_div" style="width: 900px; height: 900px;"></div>
  </body>
</html>

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