Recipe for Keen IO line chart with cumulative data (V2 Of Keen JS library)

gistfile1.js

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Line Chart with Cumulative Data
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This is an example for how you can create a line chart with data that is shown cumulatively.

.. note::
    This example is current for our JS SDK v2.1.2 only. It does not apply to v3+

.. code-block:: javascript

    Keen.onChartsReady(function(){

        var loginsPreviousWeek = new Keen.Series("logins", {
            analysisType: "count",
            timeframe: "previous_7_days",
            interval: "daily"
        });

        //Get the result of the query and add the results cumulatively.
        loginsPreviousWeek.getResponse(function(response){
            var result = response.result;
            var whichResult = 0;
            var cumulativeResult = 0;
            while (whichResult < result.length){
                cumulativeResult = cumulativeResult + result[whichResult].value
                result[whichResult].value = cumulativeResult
                whichResult++
            };

            //Create a LineChart visualization for that Series.
            var myLineChart = new Keen.LineChart(loginsPreviousWeek, {
            height: "300",
            width: "600",
            label: "logins",
            title: "logins previous 7 days"
            });
            //Draw the visualization into a div
            myLineChart.draw(document.getElementById("myDiv"), response);
            })
    });