netcdf ocean-time-series/Stellwagen/DIAMONDSHOALS/8558fan_proc.cdf {
  dimensions:
    time = UNLIMITED;   // (245 currently)
    sweep = 2;
    x = 1001;
    y = 1001;
  variables:
    int time(time=245);
      :units = "EPIC Julian Day";
      :type = "UNEVEN";
      :epic_code = 624; // int

    int time2(time=245);
      :units = "msec since 0:00 GMT";
      :type = "UNEVEN";
      :epic_code = 624; // int

    float x(x=1001);
      :long_name = "interpolated horizontal distance from sonar";
      :valid_range = -5.0f, 5.0f; // float
      :units = "m";
      :type = "EVEN";

    float y(y=1001);
      :long_name = "interpolated horizontal distance from sonar";
      :valid_range = -5.0f, 5.0f; // float
      :units = "m";
      :type = "EVEN";

    short sweep(sweep=2);
      :long_name = "integer sweep number";
      :valid_range = 1.0f, 12.0f; // float
      :units = "counts";
      :type = "EVEN";

    short sonar_image(time=245, sweep=2, y=1001, x=1001);
      :long_name = "Imagenex Sonar Image";
      :units = "?";
      :valid_range = 0S, 30000S; // short
      :_FillValue = -32767S; // short
      :scale_factor = 10000.0f; // float

  // global attributes:
  :dxy = 0.01f; // float
  :SonartoAnimate = "fan";
  :adcp3val = 8.14f; // float
  :fanadcp_off = 102.91f; // float
  :sweeps = 2.0; // double
  :VAR_DESC = "points:scans:head_pos:Headangle:nDataBytes:profile_range:raw_image";
  :CREATION_DATE = "13-Jul-2009 11:25:11";
  :DATA_TYPE = "TIME";
  :DATA_SUBTYPE = "MOORED";
  :DATA_ORIGIN = "USGS WHSC Sed Trans Group";
  :EXPERIMENT = "Carolinas Coastal Change Processes Project";
  :PROJECT = "USGS Coastal Marine Geology Program";
  :MOORING = "855";
  :DELTA_T = "? sec";
  :COMPOSITE = 0.0; // double
  :DATA_CMNT = " ";
  :POS_CONST = 0.0; // double
  :DEPTH_CONST = 0.0; // double
  :WATER_MASS = "?";
  :DESCRIPT = " ";
  :DRIFTER = 0.0; // double
  :history = "Sonar processed with do_fan_rots, SVN $Revision: 1520 $, using Matlab 7.8.0.347 (R2009a); Sonar data written to NetCDF by mkrawcdf, SVN $Revision: 1515 $, using Matlab 7.6.0.324 (R2008a); Sonar data downloaded from instrument";
  :start_time = "13-Jan-2009 01:56:00";
  :stop_time = "14-Mar-2009 14:56:00";
  :latitude = "35.1783";
  :longitude = "-75.423355";
  :magnetic_variation = "-10.7833";
  :INST_TYPE = "Imagenex Model 881 Digital tilt adjust imaging sonar";
  :Conventions = "PMEL/EPIC";
  :SciPi = "J.C. Warner";
  :DESCRIPTION = "North site with two tripods ";
  :COORD_SYSTEM = "GEOGRAPHIC";
  :WATER_DEPTH = "14.7828";
  :Deployment_date = "12-Jan-2009";
  :Recovery_date = "10-May-2009";
  :metadata_author = "Ellyn Montgomery, USGS";
  :Height = 0.6299999952316284; // double
  :FirstSonarDay = "12-Jan-2009";
  :LastSonarDay = "14-Mar-2009";
  :RootDataDir = "C:\\home\\data\\processing\\Hatteras09\\855NorthMinipod\\855sonar\\im";
  :datayear = 2009.0; // double
  :HeadID = 16.0; // double
  :Range = 5.0; // double
  :RevHold = "Reverse Step Direction";
  :MasterSlave = "Send Data Slave Mode";
  :StartGain = 16.0; // double
  :LOGF = 20.0; // double
  :Absorption = 0.06; // double
  :TrainAngle = 0.0; // double
  :SectorWidth = 348.0; // double
  :StepSize = 0.15000000000000568; // double
  :PulseLength = 10.0; // double
  :DataPoints = 500.0; // double
  :DataBits = 8.0; // double
  :UpBaud = 6.0; // double
  :Profile = "OFF";
  :Calibrate = "Calibrate";
  :SwitchDelay = 2.0; // double
  :RangeOffset = 0.0; // double
  :StepDirection = 0.0; // double
  :MoveRelative = 0.0; // double
  :HeadType = "IGX";
  :NDataBytes = 500.0; // double
  :NReturnBytes = 513.0; // double
  :NOTE = "radial data interpolated onto x-y grid to make image;image rotated so that +y (up) is N";
  :DegPerStep = 0.149993896484375; // double
  :NOTE1 = "To view images in Matlab type the following at the command prompt:  nc=netdcf(\'sonarxxx.nc\');imagesc(nc{\'x\'}(:),nc{\'y\'}(:),squeeze(nc{\'sonar_image\'}(n,p,:,:)));set(gca,\'ydir\',\'normal\'); **where n & p are the time and sweep indexes";
  :image_rotation_degrees = 121.8333; // double
  :OperatingFrequency = "1330 kHz";
}