keen showLineChart

gistfile1.js

    showLineChart: function(){
      Keen.onChartsReady(function(){

          //Find the amount of money made from purchases each day for the last 7 days
          //only count the users that that are over 21 years old.
          var mySeries = new Keen.Series("purchases", {
              analysisType: "sum",
              targetProperty: "total_price",
              timeframe: "previous_7_days",
              interval: "daily"
          });
          mySeries.addFilter("user.age", "gt", 21);

          //Draw a line chart in a <div/> with an ID of "purchases"
          var myLineChart = new Keen.LineChart(mySeries, {
              height: 500,
              width: 200,
              lineWidth: 5,
              color: "red",
              backgroundColor: "transparent",
              title: "Purchases over Previous 7 Days",
              showLegend: false
          });
          myLineChart.draw(document.getElementById("purchases"));
      });
    },