public AccelerometerDataRepresentingForm()
        {
            InitializeComponent();

            strLogFilename   = "";
            sensorTypeToShow = SensorsHistoryShowing.Accelerometer;
        }
 //public FunctionRepresentationForm(FunctionDefinitionTypes theDefinitionType = FunctionDefinitionTypes.analytic, string description = "")
 public AccelerometerDataRepresentingForm(string logFileName, SensorsHistoryShowing sensorType = SensorsHistoryShowing.Accelerometer)
 {
     InitializeComponent();
     if (logFileName == "")
     {
         return;
     }
     if (!File.Exists(logFileName))
     {
         var result = MessageBox.Show("Cant find actual log data file: " + logFileName, "Cant find a file",
                                      MessageBoxButtons.OK, MessageBoxIcon.Warning);
         this.Close();
     }
     strLogFilename   = logFileName;
     sensorTypeToShow = sensorType;
 }