netcdf ocean-time-series/Stellwagen/FI12/9212fan_proc_rot.cdf {
  dimensions:
    time = UNLIMITED;   // (167 currently)
    sweep = 1;
    x = 2001;
    y = 2001;
  variables:
    int time(time=167);
      :units = "EPIC Julian Day";
      :type = "UNEVEN";
      :epic_code = 624; // int

    int time2(time=167);
      :units = "msec since 0:00 GMT";
      :type = "UNEVEN";
      :epic_code = 624; // int

    float x(x=2001);
      :long_name = "interpolated horizontal distance from sonar";
      :valid_range = -5.0f, 5.0f; // float
      :units = "m";
      :type = "EVEN";

    float y(y=2001);
      :long_name = "interpolated horizontal distance from sonar";
      :valid_range = -5.0f, 5.0f; // float
      :units = "m";
      :type = "EVEN";

    short sweep(sweep=1);
      :long_name = "integer sweep number";
      :valid_range = 1.0f, 12.0f; // float
      :units = "counts";
      :type = "EVEN";

    short sonar_image(time=167, sweep=1, y=2001, x=2001);
      :long_name = "Imagenex Sonar Image";
      :units = "?";
      :valid_range = 0S, 30000S; // short
      :_FillValue = -32767S; // short
      :scale_factor = 10000.0f; // float

  // global attributes:
  :dxy = 0.005f; // float
  :SonartoAnimate = "fan";
  :tidx = 1.0f; // float
  :fanadcp_off = 175.24f; // float
  :adcp3val = 84.88f; // float
  :sweeps = 1.0; // double
  :VAR_DESC = "points:scans:head_pos:Headangle:nDataBytes:profile_range:raw_image";
  :CREATION_DATE = "15-Oct-2012 11:19:12";
  :DATA_TYPE = "TIME";
  :DATA_SUBTYPE = "MOORED";
  :DATA_ORIGIN = "USGS WHSC Sed Trans Group";
  :EXPERIMENT = "Fire Island 2012";
  :PROJECT = "USGS Coastal Marine Geology Program";
  :MOORING = "921";
  :DELTA_T = "? sec";
  :COMPOSITE = 0.0; // double
  :DATA_CMNT = " ";
  :POS_CONST = 0.0; // double
  :DEPTH_CONST = 0.0; // double
  :WATER_MASS = "?";
  :DESCRIPTION = "Site 1 WHSC minipod, ridge";
  :DRIFTER = 0.0; // double
  :history = "Sonar processed with do_fan_rots, SVN $Revision: 1741 $, using Matlab 7.11.1.866 (R2010b) Service Pack 1; Sonar data written to NetCDF by mkrawcdf, SVN $Revision: 1741 $, using Matlab 7.11.1.866 (R2010b) Service Pack 1; Sonar data downloaded from instrument";
  :start_time = "26-Jan-2012 03:45:00";
  :stop_time = "09-Mar-2012 17:08:00";
  :latitude = 40.604713439941406; // double
  :longitude = -73.01827239990234; // double
  :magnetic_variation = -13.5; // double
  :INST_TYPE = "Imagenex Model 881 Digital tilt adjusting imaging sonar";
  :Conventions = "PMEL/EPIC";
  :platform_type = "tripod";
  :SciPi = "J.C. Warner";
  :COORD_SYSTEM = "GEOGRAPHIC";
  :WATER_DEPTH = 20.3302001953125; // double
  :WATER_DEPTH_NOTE = "depth from bridge fathometer";
  :Deployment_date = "26-Jan-2012";
  :Recovery_date = "19-Apr-2012";
  :Data_Cmnt = "none";
  :metadata_author = "Ellyn Montgomery, USGS";
  :Height = 0.6000000238418579; // double
  :FirstSonarDay = "26-Jan-2012";
  :LastSonarDay = "19-Apr-2012";
  :RootDataDir = "C:\\home\\data\\FI2012\\sonar_post\\WHSC_logger\\raw";
  :datayear = 2012.0; // double
  :serial_number = "1751";
  :HeadID = 16.0; // double
  :Range = 5.0; // double
  :RevHold = "Reverse Step Direction";
  :MasterSlave = "Send Data Slave Mode";
  :StartGain = 20.0; // 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
  :Frequency = "675 kHz";
  :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 = 273.62; // double
}