text: $(function () {
      var housePrice = [
          { x: 2000, y: 418530 },
          { x: 2001, y: 432050 },
          { x: 2002, y: 410865 },
          { x: 2003, y: 465025 },
          { x: 2004, y: 548088 },
          { x: 2005, y: 565843 },
          { x: 2006, y: 598243 },
          { x: 2007, y: 535018 },
          { x: 2008, y: 498356 },
          { x: 2009, y: 542686 },
          { x: 2010, y: 652301 },
          { x: 2011, y: 695342 },
          { x: 2012, y: 752354 },
          { x: 2013, y: 780543 }
      ];
  
      var moneyFormatter = d3.format('$,.0f');
      new Contour({
              el: '.area-basic',
  
              xAxis: {
                  title: 'Year'
              },
  
              yAxis: {
                  title: 'Value (US $)'
              },
  
              line: {
                  animationDirection: 'bottom-to-top'
              },
  
              tooltip: {
                  formatter: function (d) {
                      return 'Average house price<br>Year: ' + d.x + '<br>' + moneyFormatter(d.y);
                  }
              }
          })
          .cartesian()
          .area(housePrice)
          .line(housePrice, { marker: { size: 3 } } )
          .tooltip()
          .render();
  });
  