cdm/src/main/java/ucar/nc2/iosp/nids/Nidsheader.java
int pcode_generic( ByteBuffer  bos, int hoff, int hedsiz, boolean isZ, byte[] data, short[] threshold ) throws IOException
    {
        byte[] b2 = new byte[2];
        int soff = 0;
        ArrayList dims =  new ArrayList();
        int iscale = 1;                         /* data scale                    */
        bos.get(b2, 0, 2);
        bos.get(b2, 0, 2);
        bos.get(b2, 0, 2);

        readInString(bos); // vname
        readInString(bos); // vdesp

        bos.getInt(); // code
        bos.getInt(); // type
        bos.getInt(); // time
        readInString(bos); // rnameStr

        bos.getFloat(); // lat
        bos.getFloat(); // lon
        bos.getFloat(); // height

        bos.getInt(); // vscanStartTime
        bos.getInt(); // eleScanStartTime

        float eleAngle = bos.getFloat();
        p3 = (short) eleAngle;

        bos.getInt(); // volScanNum
        bos.getInt(); // opMode
        bos.getInt(); // volPattern
        bos.getInt(); // eleNum

        bos.getDouble(); // skip 8 bytes
        parseParameters(bos);   // aa - do nothing
        List cc = parseComponents(bos);   // assuming only radial component
        if (cc == null) {
            throw new IOException("Error reading components for radial data");
        }
        int num_radials = (Integer)cc.get(1);
        int num_bin = (Integer)cc.get(0);
        float rangeToFirstBin = (Float)cc.get(2);
        int dataOffset = (Integer)cc.get(3);
        numY0 = 0;
        numY =  num_radials;
        numX0 = (int)rangeToFirstBin ; //first_bin;
        numX = num_bin;
        int nlevel = code_levelslookup( pcode );
        int [] levels;
        short radp_scale = 1000;
        hedsiz = dataOffset;
                //prod_info_size = 2 * (int) (num_bin * scale + 0.5);
        //dimensions: radial, bin
        ncfile.addAttribute(null, new Attribute("cdm_data_type", FeatureType.RADIAL.toString()));
        Dimension radialDim = new Dimension("azimuth", num_radials);
        ncfile.addDimension( null, radialDim);

        Dimension binDim = new Dimension("gate", num_bin);
        ncfile.addDimension( null, binDim);
        dims.add( radialDim);
        dims.add( binDim);

        ArrayList dims1 =  new ArrayList();
        ArrayList dims2 =  new ArrayList();
        dims1.add(radialDim);
        dims2.add(binDim);

        isR = true;

        // add elevation coordinate variable
        String vName = "elevation";
        String lName = "elevation angle in degres: 0 = parallel to pedestal base, 90 = perpendicular";
        Attribute att = new Attribute(_Coordinate.AxisType, AxisType.RadialElevation.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, p3);

        // add azimuth coordinate variable
        vName = "azimuth";
        lName = "azimuth angle in degrees: 0 = true north, 90 = east";
        att = new Attribute(_Coordinate.AxisType, AxisType.RadialAzimuth.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);


        // add gate coordinate variable
        vName = "gate";
        lName = "Radial distance to the start of gate";
        att = new Attribute(_Coordinate.AxisType, AxisType.RadialDistance.toString());
        addParameter(vName, lName, ncfile, dims2, att, DataType.FLOAT, "meters",hoff, hedsiz, isZ, radp_scale);

        // add radial coordinate variable

        vName = "latitude";
        lName = "Latitude of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Lat.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);

        vName = "longitude";
        lName = "Longitude of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Lon.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);

        vName = "altitude";
        lName = "Altitude in meters (asl) of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Height.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "meters",hoff, hedsiz, isZ, 0);

        vName = "rays_time";
        lName = "rays time";
        att = new Attribute(_Coordinate.AxisType, AxisType.Time.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.DOUBLE, "milliseconds since 1970-01-01 00:00 UTC"
                ,hoff, hedsiz, isZ, 0);

        if (  pcode == 176) {
            levels = getDualpolLevels(threshold);
            iscale = 1;
        } else {
            levels = getLevels(nlevel, threshold);
        }

        Variable v = new Variable(ncfile, null, null, cname + "_RAW");
        v.setDataType(DataType.USHORT);
        v.setDimensions(dims);
        ncfile.addVariable(null, v);
        v.addAttribute( new Attribute(CDM.UNITS, cunit));
        String coordinates = "elevation azimuth gate rays_time latitude longitude altitude";
        v.addAttribute( new Attribute(_Coordinate.Axes, coordinates));
        // v.addAttribute( new Attribute(CDM.UNSIGNED, "true"));
        v.setSPobject( new Vinfo (numX, numX0, numY, numY0, hoff, hedsiz, isR, isZ, null, levels, 0, nlevel));


        if (cname.startsWith("DigitalInstantaneousPrecipitationRate") ) {
            addVariable(cname, ctitle, ncfile, dims, coordinates, DataType.FLOAT,
                    cunit, hoff, hedsiz, isZ, nlevel, levels, iscale);
        }

        return soff;
    }
int pcode_generic( ByteBuffer  bos, int hoff, int hedsiz, boolean isZ, byte[] data, short[] threshold ) throws IOException
    {
        byte[] b2 = new byte[2];
        int soff = 0;
        ArrayList dims =  new ArrayList();
        int iscale = 1;                         /* data scale                    */
        bos.get(b2, 0, 2);
        bos.get(b2, 0, 2);
        bos.get(b2, 0, 2);

        readInString(bos); // vname
        readInString(bos); // vdesp

        bos.getInt(); // code
        bos.getInt(); // type
        bos.getInt(); // time
        readInString(bos); // rnameStr

        bos.getFloat(); // lat
        bos.getFloat(); // lon
        bos.getFloat(); // height

        bos.getInt(); // vscanStartTime
        bos.getInt(); // eleScanStartTime

        float eleAngle = bos.getFloat();
        p3 = (short) eleAngle;

        bos.getInt(); // volScanNum
        bos.getInt(); // opMode
        bos.getInt(); // volPattern
        bos.getInt(); // eleNum

        bos.getDouble(); // skip 8 bytes
        parseParameters(bos);   // aa - do nothing
        List cc = parseComponents(bos);   // assuming only radial component
        if (cc == null) {
            throw new IOException("Error reading components for radial data");
        }
        int num_radials = (Integer)cc.get(1);
        int num_bin = (Integer)cc.get(0);
        float rangeToFirstBin = (Float)cc.get(2);
        int dataOffset = (Integer)cc.get(3);
        numY0 = 0;
        numY =  num_radials;
        numX0 = (int)rangeToFirstBin ; //first_bin;
        numX = num_bin;
        int nlevel = code_levelslookup( pcode );
        int [] levels;
        short radp_scale = 1000;
        hedsiz = dataOffset;
                //prod_info_size = 2 * (int) (num_bin * scale + 0.5);
        //dimensions: radial, bin
        ncfile.addAttribute(null, new Attribute("cdm_data_type", FeatureType.RADIAL.toString()));
        Dimension radialDim = new Dimension("azimuth", num_radials);
        ncfile.addDimension( null, radialDim);

        Dimension binDim = new Dimension("gate", num_bin);
        ncfile.addDimension( null, binDim);
        dims.add( radialDim);
        dims.add( binDim);

        ArrayList dims1 =  new ArrayList();
        ArrayList dims2 =  new ArrayList();
        dims1.add(radialDim);
        dims2.add(binDim);

        isR = true;

        // add elevation coordinate variable
        String vName = "elevation";
        String lName = "elevation angle in degres: 0 = parallel to pedestal base, 90 = perpendicular";
        Attribute att = new Attribute(_Coordinate.AxisType, AxisType.RadialElevation.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, p3);

        // add azimuth coordinate variable
        vName = "azimuth";
        lName = "azimuth angle in degrees: 0 = true north, 90 = east";
        att = new Attribute(_Coordinate.AxisType, AxisType.RadialAzimuth.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);


        // add gate coordinate variable
        vName = "gate";
        lName = "Radial distance to the start of gate";
        att = new Attribute(_Coordinate.AxisType, AxisType.RadialDistance.toString());
        addParameter(vName, lName, ncfile, dims2, att, DataType.FLOAT, "meters",hoff, hedsiz, isZ, radp_scale);

        // add radial coordinate variable

        vName = "latitude";
        lName = "Latitude of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Lat.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);

        vName = "longitude";
        lName = "Longitude of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Lon.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "degrees",hoff, hedsiz, isZ, 0);

        vName = "altitude";
        lName = "Altitude in meters (asl) of the instrument";
        att = new Attribute(_Coordinate.AxisType, AxisType.Height.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.FLOAT, "meters",hoff, hedsiz, isZ, 0);

        vName = "rays_time";
        lName = "rays time";
        att = new Attribute(_Coordinate.AxisType, AxisType.Time.toString());
        addParameter(vName, lName, ncfile, dims1, att, DataType.DOUBLE, "milliseconds since 1970-01-01 00:00 UTC"
                ,hoff, hedsiz, isZ, 0);

        if (  pcode == 176) {
            levels = getDualpolLevels(threshold);
            iscale = 1;
        } else {
            levels = getLevels(nlevel, threshold);
        }

        Variable v = new Variable(ncfile, null, null, cname + "_RAW");
        v.setDataType(DataType.USHORT);
        v.setDimensions(dims);
        ncfile.addVariable(null, v);
        v.addAttribute( new Attribute(CDM.UNITS, cunit));
        String coordinates = "elevation azimuth gate rays_time latitude longitude altitude";
        v.addAttribute( new Attribute(_Coordinate.Axes, coordinates));
        // v.addAttribute( new Attribute(CDM.UNSIGNED, "true"));
        v.setSPobject( new Vinfo (numX, numX0, numY, numY0, hoff, hedsiz, isR, isZ, null, levels, 0, nlevel));


        if (cname.startsWith("DigitalInstantaneousPrecipitationRate") ) {
            addVariable(cname, ctitle, ncfile, dims, coordinates, DataType.FLOAT,
                    cunit, hoff, hedsiz, isZ, nlevel, levels, iscale);
        }

        return soff;
    }
int pcode_generic ( ByteBuffer bos , int hoff , int hedsiz , boolean isZ , byte [ ] data , short [ ] threshold ) throws IOException { byte [ ] b2 = new byte [ 2 ] ; int soff = 0 ; ArrayList dims = new ArrayList ( ) ; int iscale = 1 ; /* data scale                    */ bos . get ( b2 , 0 , 2 ) ; bos . get ( b2 , 0 , 2 ) ; bos . get ( b2 , 0 , 2 ) ; readInString ( bos ) ; // vname
 readInString ( bos ) ; // vdesp
 bos . getInt ( ) ; // code
 bos . getInt ( ) ; // type
 bos . getInt ( ) ; // time
 readInString ( bos ) ; // rnameStr
 bos . getFloat ( ) ; // lat
 bos . getFloat ( ) ; // lon
 bos . getFloat ( ) ; // height
 bos . getInt ( ) ; // vscanStartTime
 bos . getInt ( ) ; // eleScanStartTime
 float eleAngle = bos . getFloat ( ) ; p3 = ( short ) eleAngle ; bos . getInt ( ) ; // volScanNum
 bos . getInt ( ) ; // opMode
 bos . getInt ( ) ; // volPattern
 bos . getInt ( ) ; // eleNum
 bos . getDouble ( ) ; // skip 8 bytes
 parseParameters ( bos ) ; // aa - do nothing
 List cc = parseComponents ( bos ) ; // assuming only radial component
 if ( cc == null ) { throw new IOException ( "Error reading components for radial data" ) ; } int num_radials = ( Integer ) cc . get ( 1 ) ; int num_bin = ( Integer ) cc . get ( 0 ) ; float rangeToFirstBin = ( Float ) cc . get ( 2 ) ; int dataOffset = ( Integer ) cc . get ( 3 ) ; numY0 = 0 ; numY = num_radials ; numX0 = ( int ) rangeToFirstBin ; //first_bin;
 numX = num_bin ; int nlevel = code_levelslookup ( pcode ) ; int [ ] levels ; short radp_scale = 1000 ; hedsiz = dataOffset ; //prod_info_size = 2 * (int) (num_bin * scale + 0.5);
 //dimensions: radial, bin
 ncfile . addAttribute ( null , new Attribute ( "cdm_data_type" , FeatureType . RADIAL . toString ( ) ) ) ; Dimension radialDim = new Dimension ( "azimuth" , num_radials ) ; ncfile . addDimension ( null , radialDim ) ; Dimension binDim = new Dimension ( "gate" , num_bin ) ; ncfile . addDimension ( null , binDim ) ; dims . add ( radialDim ) ; dims . add ( binDim ) ; ArrayList dims1 = new ArrayList ( ) ; ArrayList dims2 = new ArrayList ( ) ; dims1 . add ( radialDim ) ; dims2 . add ( binDim ) ; isR = true ; // add elevation coordinate variable
 String vName = "elevation" ; String lName = "elevation angle in degres: 0 = parallel to pedestal base, 90 = perpendicular" ; Attribute att = new Attribute ( _Coordinate . AxisType , AxisType . RadialElevation . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . FLOAT , "degrees" , hoff , hedsiz , isZ , p3 ) ; // add azimuth coordinate variable
 vName = "azimuth" ; lName = "azimuth angle in degrees: 0 = true north, 90 = east" ; att = new Attribute ( _Coordinate . AxisType , AxisType . RadialAzimuth . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . FLOAT , "degrees" , hoff , hedsiz , isZ , 0 ) ; // add gate coordinate variable
 vName = "gate" ; lName = "Radial distance to the start of gate" ; att = new Attribute ( _Coordinate . AxisType , AxisType . RadialDistance . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims2 , att , DataType . FLOAT , "meters" , hoff , hedsiz , isZ , radp_scale ) ; // add radial coordinate variable
 vName = "latitude" ; lName = "Latitude of the instrument" ; att = new Attribute ( _Coordinate . AxisType , AxisType . Lat . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . FLOAT , "degrees" , hoff , hedsiz , isZ , 0 ) ; vName = "longitude" ; lName = "Longitude of the instrument" ; att = new Attribute ( _Coordinate . AxisType , AxisType . Lon . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . FLOAT , "degrees" , hoff , hedsiz , isZ , 0 ) ; vName = "altitude" ; lName = "Altitude in meters (asl) of the instrument" ; att = new Attribute ( _Coordinate . AxisType , AxisType . Height . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . FLOAT , "meters" , hoff , hedsiz , isZ , 0 ) ; vName = "rays_time" ; lName = "rays time" ; att = new Attribute ( _Coordinate . AxisType , AxisType . Time . toString ( ) ) ; addParameter ( vName , lName , ncfile , dims1 , att , DataType . DOUBLE , "milliseconds since 1970-01-01 00:00 UTC" , hoff , hedsiz , isZ , 0 ) ; if ( pcode == 176 ) { levels = getDualpolLevels ( threshold ) ; iscale = 1 ; } else { levels = getLevels ( nlevel , threshold ) ; } Variable v = new Variable ( ncfile , null , null , cname + "_RAW" ) ; v . setDataType ( DataType . USHORT ) ; v . setDimensions ( dims ) ; ncfile . addVariable ( null , v ) ; v . addAttribute ( new Attribute ( CDM . UNITS , cunit ) ) ; String coordinates = "elevation azimuth gate rays_time latitude longitude altitude" ; v . addAttribute ( new Attribute ( _Coordinate . Axes , coordinates ) ) ; // v.addAttribute( new Attribute(CDM.UNSIGNED, "true"));
 v . setSPobject ( new Vinfo ( numX , numX0 , numY , numY0 , hoff , hedsiz , isR , isZ , null , levels , 0 , nlevel ) ) ; if ( cname . startsWith ( "DigitalInstantaneousPrecipitationRate" ) ) { addVariable ( cname , ctitle , ncfile , dims , coordinates , DataType . FLOAT , cunit , hoff , hedsiz , isZ , nlevel , levels , iscale ) ; } return soff ; }
construct a generic radial dataset for dualpol radial products;


@param bos, hoff, hedsiz, isZ, data, threshold

@return  soff -- not used
construct a generic radial dataset for dualpol radial products ;