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<script>
  var dataSource = new kendo.data.PivotDataSource({
    columns: ["ProductName" ],
    rows: ["Category"],
    measures: ["Sum"],
    data: [{ ProductName: "Chai", UnitPrice: 42, Cateogry: "Beverages" } ],
    schema: {
      cube: {
        dimensions: {
          ProductName: { caption: "All Products" },
          Category: { caption: "All Cateogries" }
        },
        measures: {
          "Average": {
            field: "UnitPrice",
            aggregate: function(value, state, context) {
              if (!isNaN(value)) {
                state.count = (state.count || 0) + 1;
                return (state.accumulator || 0) + value;
              } else {
                return state.accumulator;
              }
            },
            result: function(state) {
              return state.accumulator / state.count;
            }
          }
        }
      }
    }
  });

  dataSource.fetch(function() {
    /* The result can be observed in the DevTools(F12) console of the browser. */
    console.log(dataSource.data(), dataSource.axes());
  });
</script>