/// <summary>
/// Update the Bottom Track series with the latest depth.
/// </summary>
/// <param name="btSeries">Bottom Track series to update.</param>
/// <param name="reader">Database reader.</param>
/// <param name="ensIndex">Index in the plot based off the reader.</param>
private void ParseBtData(ref AreaSeries btSeries, DbDataReader reader, int ensIndex)
{
try
{
// Convert to a JSON object
string jsonEnsemble = reader["EnsembleDS"].ToString();
JObject ensData = JObject.Parse(jsonEnsemble);
int numBins = ensData["NumBins"].ToObject <int>();
// Update the bottom track line series
//int rangeBin = GetRangeBin(reader);
int rangeBin = DbDataHelper.GetRangeBin(reader);
if (rangeBin == DbDataHelper.BAD_BOTTOM_BIN && _prevGoodBottomBin != DbDataHelper.BAD_BOTTOM_BIN)
{
// Use the backup value if bad
rangeBin = _prevGoodBottomBin;
}
// Store as backup
if (rangeBin != DbDataHelper.BAD_BOTTOM_BIN)
{
_prevGoodBottomBin = rangeBin;
}
// Only plot the range if it is found
if (rangeBin > 0)
{
// Create a new data point for the bottom track line
// This will be the (ensemble count, range bin)
btSeries.Points.Add(new DataPoint(ensIndex, rangeBin));
// Add the second point for the shaded area
if (rangeBin < numBins)
{
// Less then the number of bins, so go to the end of the number of bins
btSeries.Points2.Add(new DataPoint(ensIndex, numBins));
}
else
{
// This is the deepest point
btSeries.Points2.Add(new DataPoint(ensIndex, rangeBin));
}
}
}
catch (Exception e)
{
Debug.WriteLine("Error parsing Bottom Track data", e);
return;
}
}
/// <summary>
/// Get the GPS data from the ensemble using the database reader.
/// </summary>
/// <param name="reader">Database reader.</param>
/// <returns>If NMEA data exist, pass the data, or return NULL.</returns>
public static GpsData GetGpsData(DbDataReader reader)
{
// Get the NMEA data
string jsonNmea = reader["NmeaDS"].ToString();
DbDataHelper.GpsData gpsData = null;
if (!string.IsNullOrEmpty(jsonNmea))
{
// Convert to a JSON object
JObject ensNmea = JObject.Parse(jsonNmea);
string[] nmeaStrings = ensNmea["NmeaStrings"].ToObject <string[]>();
if (nmeaStrings != null && nmeaStrings.Length > 0)
{
gpsData = DbDataHelper.DecodeNmea(nmeaStrings);
}
}
// Check if we have a valid GPS speed
if (gpsData != null && gpsData.GPVTG != null && gpsData.GPHDT != null && gpsData.GPVTG.IsValid && gpsData.GPHDT.IsValid)
{
// Convert the speed and east and north component
// Speed from the GPS
double speed = gpsData.GPVTG.Speed.ToMetersPerSecond().Value;
// Calculate the East and North component of the GPS speed
gpsData.BackupShipEast = Convert.ToSingle(speed * Math.Sin(gpsData.GPHDT.Heading.ToRadians().Value));
gpsData.BackupShipNorth = Convert.ToSingle(speed * Math.Cos(gpsData.GPHDT.Heading.ToRadians().Value));
gpsData.IsBackShipSpeedGood = true;
}
else if (gpsData != null && gpsData.GPHDT != null && gpsData.GPRMC != null && gpsData.GPRMC.IsValid && gpsData.GPHDT.IsValid)
{
// Convert the speed and east and north component
// Speed from the GPS
double speed = gpsData.GPRMC.Speed.ToMetersPerSecond().Value;
// Calculate the East and North component of the GPS speed
gpsData.BackupShipEast = Convert.ToSingle(speed * Math.Sin(gpsData.GPHDT.Heading.ToRadians().Value));
gpsData.BackupShipNorth = Convert.ToSingle(speed * Math.Cos(gpsData.GPHDT.Heading.ToRadians().Value));
gpsData.IsBackShipSpeedGood = true;
}
return(gpsData);
}
/// <summary>
/// Process the row from the DB. A row represents an ensemble.
/// </summary>
/// <param name="reader">Database connection data.</param>
/// <returns>Direction data for a row.</returns>
private double[] ParseDirData(DbDataReader reader)
{
try
{
// Get data
DbDataHelper.VelocityMagDir velMagDir = DbDataHelper.CreateVelocityVectors(reader, _backupBtEast, _backupBtNorth, _IsRemoveShipSpeed, _IsMarkBadBelowBottom);
// Store the backup value
if (velMagDir.IsBtVelGood)
{
_backupBtEast = velMagDir.BtEastVel;
_backupBtNorth = velMagDir.BtNorthVel;
}
return(velMagDir.DirectionYNorth);
}
catch (Exception e)
{
Debug.WriteLine("Error parsing the Earth Velocity Direction data row", e);
return(null);
}
}
/// <summary>
/// Process the row from the DB. A row represents an ensemble.
/// </summary>
/// <param name="reader">Database connection data.</param>
/// <returns>Magnitude data for a row.</returns>
private double[] ParseAmpData(DbDataReader reader)
{
try
{
// Get Range Bin if marking bad below bottom
int rangeBin = BAD_BOTTOM_BIN;
if (IsMarkBadBelowBottom)
{
//rangeBin = GetRangeBin(reader);
rangeBin = DbDataHelper.GetRangeBin(reader);
if (rangeBin == DbDataHelper.BAD_BOTTOM_BIN && _prevGoodBottomBin != DbDataHelper.BAD_BOTTOM_BIN)
{
// Use the backup value if bad
rangeBin = _prevGoodBottomBin;
}
// Store as backup
if (rangeBin != DbDataHelper.BAD_BOTTOM_BIN)
{
_prevGoodBottomBin = rangeBin;
}
}
// Get the data as a JSON string
string jsonData = reader["AmplitudeDS"].ToString();
if (!string.IsNullOrEmpty(jsonData))
{
// Convert to a JSON object
JObject ensData = JObject.Parse(jsonData);
// Get the number of bins
int numBins = ensData["NumElements"].ToObject <int>();
int numBeams = ensData["ElementsMultiplier"].ToObject <int>();
double[] data = new double[numBins];
for (int bin = 0; bin < numBins; bin++)
{
int avgCnt = 0;
double avg = 0.0;
// Average the amplitude for each beam data together
for (int beam = 0; beam < numBeams; beam++)
{
if (ensData["AmplitudeData"][bin][beam].ToObject <double>() != BAD_VELOCITY)
{
avgCnt++;
avg += ensData["AmplitudeData"][bin][beam].ToObject <double>();
}
}
// Check if Mark bad below bottom
if (_IsMarkBadBelowBottom && rangeBin > BAD_BOTTOM_BIN && bin >= rangeBin)
{
// Mark bad below bottom
data[bin] = BAD_AMPLITUDE;
}
// Add average data to the array
else if (avgCnt > 0)
{
data[bin] = avg / avgCnt;
}
else
{
data[bin] = BAD_AMPLITUDE;
}
}
return(data);
}
return(null);
}
catch (Exception e)
{
Debug.WriteLine("Error parsing the Amplitude data row", e);
return(null);
}
}
/// <summary>
/// Query the data from the database.
/// </summary>
/// <param name="cnn">SQLite connection.</param>
/// <param name="query">Query for the data.</param>
/// <param name="magScale">Magnitude scale.</param>
/// <param name="minIndex">Minimum index.</param>
/// <param name="maxIndex">Maximum index.</param>
/// <returns></returns>
private List <ShipTrackData> QueryDataFromDb(SQLiteConnection cnn, string query, double magScale, int minIndex = 0, int maxIndex = 0)
{
// Init list
double backupBtEast = DbDataHelper.BAD_VELOCITY;
double backupBtNorth = DbDataHelper.BAD_VELOCITY;
// Init the new series data
List <ShipTrackData> stDataList = new List <ShipTrackData>();
//stData.MagScale = magScale;
// Ensure a connection was made
if (cnn == null)
{
return(null);
}
using (DbCommand cmd = cnn.CreateCommand())
{
cmd.CommandText = query;
// Get Result
DbDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
ShipTrackData stData = new ShipTrackData();
// Update the status
StatusProgress++;
StatusMsg = reader["EnsembleNum"].ToString();
// Get the Ensemble number and Date and time
stData.DateTime = reader["DateTime"].ToString();
stData.EnsNum = reader["EnsembleNum"].ToString();
// Plot the lat/lon
stData.LatLon = reader["Position"].ToString();
// Heading
DbDataHelper.HPR hpr = DbDataHelper.GetHPR(reader);
stData.Heading = hpr.Heading;
//// Get the range bin
//int rangeBin = DbDataHelper.GetRangeBin(reader);
//// Get the magnitude data
//string jsonEarth = reader["EarthVelocityDS"].ToString();
//if (!string.IsNullOrEmpty(jsonEarth))
//{
// // Convert to a JSON object
// JObject ensEarth = JObject.Parse(jsonEarth);
// // Average the data
// avgMag = DbDataHelper.GetAvgMag(ensEarth, IsMarkBadBelowBottom, rangeBin, DbDataHelper.BAD_VELOCITY);
// avgDir = DbDataHelper.GetAvgDir(ensEarth, IsMarkBadBelowBottom, rangeBin, DbDataHelper.BAD_VELOCITY);
// //Debug.WriteLine(string.Format("Avg Dir: {0} Avg Mag: {1}", avgDir, avgMag));
//}
if (IsUseGpsSpeedBackup)
{
// Get the GPS data from the database
DbDataHelper.GpsData gpsData = DbDataHelper.GetGpsData(reader);
// Check for a backup value for BT East and North speed from the GPS if a Bottom Track value is never found
if (Math.Round(backupBtEast, 4) == BAD_VELOCITY && gpsData.IsBackShipSpeedGood)
{
backupBtEast = gpsData.BackupShipEast;
backupBtNorth = gpsData.BackupShipNorth;
}
}
// Get the velocity
stData.VelMagDir = DbDataHelper.CreateVelocityVectors(reader, backupBtEast, backupBtNorth, true, true);
// Get the average range
stData.AvgRange = DbDataHelper.GetAverageRange(reader);
// Store the backup value
if (stData.VelMagDir.IsBtVelGood)
{
backupBtEast = stData.VelMagDir.BtEastVel;
backupBtNorth = stData.VelMagDir.BtNorthVel;
}
// Add the data to the list
stDataList.Add(stData);
}
}
return(stDataList);
}