New to Kendo UI for jQuery? Download free 30-day trial

Sort Stacked Series in Grouped Charts

Environment

Product Progress Kendo UI Chart for jQuery
Operating System Windows 10 64bit
Visual Studio version Visual Studio 2017
Preferred Language JavaScript

Description

How can I set the order of the stacked series in a grouped Chart?

Solution

The order of the stacked series in a grouped chart cannot be set through the sort option of the data source.

The reason for this behavior is that the grouping overrides the sort order as part of its implementation. In effect, the sort order is respected only within the resulting groups. Still, you can influence the final order of the stacked series as follows:

The following example demonstrates how to sort stacked series values in a grouped Kendo UI Chart.

    <div id="chart"></div>
    <script>

      var _globalTimeOut,
          redrawChart = true,
          myValues = {};

      var data = [{
        daysOut: 1,
        type: "A",
        requestor: "Adam"
      },{
        daysOut: 2,
        type: "A",
        requestor: "Bonnie"
      },{
        daysOut: 7,
        type: "A",
        requestor: "Connor"
      },{
        daysOut: 4,
        type: "B",
        requestor: "Adam"
      },{
        daysOut: 6,
        type: "B",
        requestor: "Bonnie"
      },{
        daysOut: 4,
        type: "B",
        requestor: "Zach"
      },{
        daysOut: 3,
        type: "B",
        requestor: "Amber"
      }];

      $("#chart").kendoChart({
        "dataSource": {
          data: data,
          group: {
            field: "type"
          }
        },
        series: [{
          field: "daysOut",
          type: "bar",
          categoryField: "requestor",
          labels: {background: "", visible: true, template: "# if(stackValue) { stackValues[category] = stackValue; } #"},
          stack: true
        }],
        dataBound: function() {
          // Sort on data change
          needsSort = true;
          stackValues = {};
        },
        legendItemClick: function() {
          // Sort on series toggle
          needsSort = true;
        },
        render: function(e) {
          triggerSorting(e);
        }
      });

      function triggerSorting(e) {
        if (!needsSort) {
          return;
        }

        needsSort = false;
        var axis = e.sender.options.categoryAxis;
        axis.categories = axis.categories.sort(function (a, b) {
          if (stackValues[a] < stackValues[b]) {
            return -1;
          }
          if (stackValues[a] > stackValues[b]) {
            return 1;
          }

          return 0;
        });

        e.sender.redraw();
      }
    </script>

See Also

In this article