js file for my blog at http://randomthoughtsonjavaprogramming.blogspot.nl/p/measurements.html

weightygraph.js

    google.load("visualization", "1", {packages:["corechart"]});
    google.setOnLoadCallback(drawChart);
    function drawChart() {
      var foreignData = computeMeasurements();
      var dataArrays = [['Date', 'Weight (kg)', '10-Day Moving Average (kg)', 'Diet (kg)']];
      var dataBmiArrays = [['Date', 'BMI', 'Underweight', 'Overweight', 'Obese']];
      var dataImpedanceArrays = [['Date', 'Impedance', '10-Day Moving Average']];
      for (var x in foreignData)
      {  
            var prelim_array = [foreignData[x].registrationTimestamp, foreignData[x].weight, foreignData[x].averageWeight, foreignData[x].dietWeight];
            dataArrays.push(prelim_array);
            var prelim_array_bmi = [foreignData[x].registrationTimestamp, foreignData[x].bmi, 18.5, 25.0, 30.0];
            dataBmiArrays.push(prelim_array_bmi);
            if (foreignData[x].impedance !== 0) {
                var prelim_array_impedance = [foreignData[x].registrationTimestamp, foreignData[x].impedance, foreignData[x].averageImpedance];
                dataImpedanceArrays.push(prelim_array_impedance);
            }
      }
      var data = google.visualization.arrayToDataTable(dataArrays);
      var data_bmi = google.visualization.arrayToDataTable(dataBmiArrays);
      var data_impedance = google.visualization.arrayToDataTable(dataImpedanceArrays);
      var options = {
        title: 'Weight over Time',       
        series: {
            0: { lineWidth: 1 }, // the real weight
            1: { lineWidth: 1, curveType: 'function' }, // curve
            2: { lineWidth: 3 } // diet
          }
      };
      var options_bmi = {
        title: 'BMI over Time',       
        series: {
            0: { lineWidth: 1 }, // the real weight
            1: { lineWidth: 1, curveType: 'function' } // curve
          }
      };
      var options_impedance = {
        title: 'Impedance over Time',       
        series: {
            0: { lineWidth: 1 }, // the real weight
            1: { lineWidth: 1, curveType: 'function' } // curve
          }
      };


      var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
      chart.draw(data, options);
      var chart_bmi = new google.visualization.LineChart(document.getElementById('bmi_div'));
      chart_bmi.draw(data_bmi, options_bmi);
      var chart_impedance = new google.visualization.LineChart(document.getElementById('impedance_div'));
      chart_impedance.draw(data_impedance, options_impedance);
   }