Package ucar.nc2.iosp.cinrad

Class Cinrad2Record

  • public class Cinrad2Record
extends Object
    This class reads one record (radial) in an CINRAD level II file. File must be uncompressed. Not handling messages yet, only data.

    10/16/05: Now returns data as a byte, so use scale and offset. Adapted with permission from the Java Iras software developed by David Priegnitz at NSSL.

    • Field Detail

      • REFLECTIVITY

        public static final int REFLECTIVITY
        Reflectivity moment identifier
        See Also:
        Constant Field Values

      • VELOCITY_HI

        public static final int VELOCITY_HI
        Radial Velocity moment identifier
        See Also:
        Constant Field Values

      • VELOCITY_LOW

        public static final int VELOCITY_LOW
        Radial Velocity moment identifier
        See Also:
        Constant Field Values

      • SPECTRUM_WIDTH

        public static final int SPECTRUM_WIDTH
        Sprectrum Width moment identifier
        See Also:
        Constant Field Values

      • DOPPLER_RESOLUTION_LOW_CODE

        public static final int DOPPLER_RESOLUTION_LOW_CODE
        Low doppler resolution code
        See Also:
        Constant Field Values

      • DOPPLER_RESOLUTION_HIGH_CODE

        public static final int DOPPLER_RESOLUTION_HIGH_CODE
        High doppler resolution code
        See Also:
        Constant Field Values

      • HORIZONTAL_BEAM_WIDTH

        public static final float HORIZONTAL_BEAM_WIDTH
        Horizontal beam width
        See Also:
        Constant Field Values

      • MISSING_DATA

        public static byte MISSING_DATA
        Initialization flag for lookup tables public static int data_lut_init_flag = 0; /** Reflectivity look up table public static float[] Reflectivity_LUT = new float[256]; /** 1 km Velocity look up table public static float[] Velocity_1km_LUT = new float[256]; /** 1/2 km Velocity look up table public static float[] Velocity_hkm_LUT = new float[256]; static { Reflectivity_LUT[0] = 0.0f; // Float.NaN; //(float) SIGNAL_BELOW_THRESHOLD; Reflectivity_LUT[1] = Float.NaN; //(float) SIGNAL_OVERLAID; Velocity_1km_LUT[0] = 0.0f; // Float.NaN; //(float) SIGNAL_BELOW_THRESHOLD; Velocity_1km_LUT[1] = Float.NaN; //(float) SIGNAL_OVERLAID; Velocity_hkm_LUT[0] = 0.0f; // Float.NaN; //(float) SIGNAL_BELOW_THRESHOLD; Velocity_hkm_LUT[1] = Float.NaN; //(float) SIGNAL_OVERLAID; for (int i = 2; i < 256; i++) { Reflectivity_LUT[i] = (float) (i / 2.0 - 33.0); Velocity_1km_LUT[i] = (float) (i - 129.0); Velocity_hkm_LUT[i] = (float) (i / 2.0 - 64.5); // also spectrum width } }

      • message_type

        public byte message_type

      • sweepInfo

        public ucar.nc2.iosp.cinrad.Cinrad2Record.SweepInfo[] sweepInfo

    • Method Detail

      • getDatatypeName

        public static String getDatatypeName​(int datatype)

      • getDatatypeUnits

        public static String getDatatypeUnits​(int datatype)

      • getDatatypeScaleFactor

        public static float getDatatypeScaleFactor​(int datatype)

      • getDatatypeAddOffset

        public static float getDatatypeAddOffset​(int datatype)

      • getMessageTypeName

        public static String getMessageTypeName​(int code)

      • getRadialStatusName

        public static String getRadialStatusName​(int code)

      • getVolumeCoveragePatternName

        public static String getVolumeCoveragePatternName​(int code)

      • getDate

        public static Date getDate​(int julianDays,
                           int msecs)

      • convertunsignedByte2Short

        public short convertunsignedByte2Short​(byte b)

      • findClosestIdx

        public int findClosestIdx​(int[] numbers,
                          short myNumber)

      • bytesToInt

        public static int bytesToInt​(byte[] bytes,
                             boolean swapBytes)

      • bytesToShort

        public static int bytesToShort​(byte[] bytes,
                               boolean swapBytes)

      • checkOk

        public boolean checkOk()

      • getAzimuth

        public float getAzimuth()
        Get the azimuth in degrees
        Returns:
        azimuth angle in degrees 0 = true north, 90 = east

      • getElevation

        public float getElevation()
        Get the elevation angle in degrees
        Returns:
        elevation angle in degrees 0 = parellel to pedestal base, 90 = perpendicular

      • getGateSize

        public int getGateSize​(int datatype)
        This method returns the gate size in meters

      • getGateStart

        public int getGateStart​(int datatype)
        This method returns the starting gate in meters

      • getGateCount

        public int getGateCount​(int datatype)
        This method returns the number of gates

      • getDate

        public Date getDate()

      • readData

        public void readData​(RandomAccessFile raf,
                     int datatype,
                     Range gateRange,
                     IndexIterator ii)
              throws IOException
        Read data from this record.
        Parameters:
        raf - read from this file
        datatype - which data type we want
        gateRange - handles the possible subset of data to return
        ii - put the data here
        Throws:
        IOException

      • toString

        public String toString()
        Instances which have same content are equal. public boolean equals(Object oo) { if (this == oo) return true; if ( !(oo instanceof Cinrad2Record)) return false; return hashCode() == oo.hashCode(); } /** Override Object.hashCode() to implement equals. * public int hashCode() { if (hashCode == 0) { int result = 17; result = 37*result + elevation_num; //result = 37*result + cut; //result = 37*result + datatype; hashCode = result; } return hashCode; } private volatile int hashCode = 0;
        Overrides:
        toString in class Object