//put chart displays in a ready state

            ResetChartColors();

        }

        string latitude;

        string longitude;

        //handle line of input data and put into chart

        //parses transmissions and saves data to CSV file

        public void ParseIncomingData(string rawDataReceived)

        {

            //check to see if data should be processed

            /* sample stansmission

            KD8TDF-9>APRS,WIDE2-1:/151916z3944.87N/08348.75WO005/0.013 SV:09 A-30.5 B45.64 C99542

                                          ^char 31 ^char 40            ^60

            */

            //TODO: verify index charcter accuracy with real transmission

            int indexStart = rawDataReceived.IndexOf("z");

            int indexEnd = rawDataReceived.IndexOf("N/");

            latitude = rawDataReceived.Substring(indexStart + 1, indexEnd - indexStart - 1);

            indexStart = rawDataReceived.IndexOf("N/");

            indexEnd = rawDataReceived.IndexOf("WO");

            longitude = rawDataReceived.Substring(indexStart + 2, indexEnd - indexStart - 2);

            AddText(rawDataReceived + "\r\n");

            rawDataReceived = rawDataReceived.Substring(59); //remove APRS overhead from string

            //place each datum in its own variable

            string[] dataTransmission;

            dataTransmission = rawDataReceived.Split(' ');

            //parse out the data type - should be a single letter

            string typeCode;

            double data;

            string csvData = "";

            //loop through all datums in the transmission and send them to the chart builder

            for (int i = 1; i < dataTransmission.Length; i++)

            {

                typeCode = dataTransmission[i].Substring(0, 1);

                data = double.Parse(dataTransmission[i].Substring(1));

                csvData += typeCode + data + ",";

            }

            //write the data to CSV file

            WriteToCSV(csvData);

        }

        //write the data to CSV file

        private void WriteToCSV(string data)

        {

            using (StreamWriter writer = new StreamWriter("debug.csv", true))

            {

       // Instantiate the communications port 

       private SerialPort port = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);

       static MainForm windowGUI;

      [STAThread]

      static void Main()

      {

          Application.SetCompatibleTextRenderingDefault(false);

          var program = new Program();

          windowGUI = new MainForm();

          program.SerialInitialize();

         Application.EnableVisualStyles();

      }

      //inits the serial port and event handler

      private void SerialInitialize()

      {

          // http://msmvps.com/blogs/coad/archive/2005/03/23/SerialPort-_2800_RS_2D00_232-Serial-COM-Port_2900_-in-C_2300_-.NET.aspx

          // Attach a method to be called when there is data waiting in the port's buffer

          port.DataReceived += new SerialDataReceivedEventHandler(ReceiveData);

          // Open the port for communications

          port.Open();