ucar.atd.dorade

Class DoradeSweep

java.lang.Object

ucar.atd.dorade.DoradeSweep

public class DoradeSweep
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DoradeSweep.DoradeSweepException
static class	DoradeSweep.MovingSensorException

Field Summary

Fields

Modifier and Type	Field and Description
static float	BAD_VALUE Bad data value flag

Constructor Summary

Constructors

Constructor and Description
DoradeSweep(RandomAccessFile file)
DoradeSweep(String filename) Construct a DoradeSweep using the named DORADE sweep file.

Method Summary

Methods

Modifier and Type	Method and Description
static String	formatDate(Date date) Return a string with a reasonable representation in UTC of the given Date.
float	getAltitude(int which) Get the sensor altitude for a non-moving sensor
float[]	getAltitudes(int which) Get the per-ray array of sensor altitudes.
float	getantennaGain(int which)
float[]	getAzimuths() Get the azimuths for all rays in the sweep.
float	getCellSpacing(int which) Return the cell spacing for the given sensor, if constant, otherwise return -1
float[]	getElevations() Get the elevations for all rays in the sweep.
float	getFixedAngle() Get the fixed angle for this sweep.
float	gethBeamWidth(int which)
float	getLatitude(int which) Get the sensor latitude for a non-moving sensor
float[]	getLatitudes(int which) Get the per-ray array of sensor latitudes.
float	getLongitude(int which) Get the sensor longitude for a non-moving sensor
float[]	getLongitudes(int which) Get the per-ray array of sensor longitudes.
int	getNCells(int which) Get the number of data cells (gates) per ray for the given sensor.
float	getnoisePower(int which)
int	getNRays() Get the number of rays in this sweep.
int	getNSensors() Get the number of sensors associated with this sweep.
DoradePARM[]	getParamList() Get the array of available parameters.
float	getpeakPower(int which)
String	getProjectName()
float	getradarConstant(int which)
float	getRangeToFirstCell(int which) Get the range to the leading edge of the first cell for the given sensor.
float[]	getRayData(DoradePARM param, int ray) Get the array of data for the given parameter and ray.
float[]	getRayData(DoradePARM param, int ray, float[] workingArray) Get the array of data for the given parameter and ray.
Date	getRayTime(int ray)
float	getrcvrGain(int which)
ScanMode	getScanMode()
ScanMode	getScanMode(int which)
String	getSensorName(int which) Get the name of a selected sensor.
int	getSweepNumber()
float	getsystemGain(int which)
Date	getTime() Get the (start) time for this sweep.
Date[]	getTimes()
float	getunambiguousRange(int which)
float	getUnambiguousVelocity(int which)
short	getVolumnNumber()
static boolean	isDoradeSweep(RandomAccessFile file)
boolean	isLittleEndian() Is this sweepfile little-endian?
DoradePARM	lookupParamIgnoreCase(String name) Get the parameter descriptor with the given name, ignoring case.
static void	main(String[] args) DoradeSweep class test method.
boolean	sensorIsMoving(int which) Return whether the selected sensor is moving.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BAD_VALUE

public static final float BAD_VALUE

Bad data value flag

See Also:

getRayData(ucar.atd.dorade.DoradePARM, int), Constant Field Values

Constructor Detail

DoradeSweep

public DoradeSweep(String filename)
            throws DoradeSweep.DoradeSweepException,
                   FileNotFoundException

Construct a DoradeSweep using the named DORADE sweep file.

Parameters:

filename - the DORADE sweepfile to load

Throws:

DoradeSweep.DoradeSweepException

FileNotFoundException

DoradeSweep

public DoradeSweep(RandomAccessFile file)
            throws DoradeSweep.DoradeSweepException,
                   FileNotFoundException

Throws:

DoradeSweep.DoradeSweepException

FileNotFoundException

Method Detail

isLittleEndian

public boolean isLittleEndian()

Is this sweepfile little-endian?

Returns:

a boolean indicating whether the file is little-endian

getParamList

public DoradePARM[] getParamList()

Get the array of available parameters.

Returns:

the array of available parameters

lookupParamIgnoreCase

public DoradePARM lookupParamIgnoreCase(String name)

Get the parameter descriptor with the given name, ignoring case. If no such descriptor exists, null is returned.

Parameters:

name - the name of the desired parameter

Returns:

the DoradePARM from this sweep with the given name, or null if no such parameter exists.

getNRays

public int getNRays()

Get the number of rays in this sweep.

Returns:

the number of rays in the sweep

getNSensors

public int getNSensors()

Get the number of sensors associated with this sweep.

Returns:

the number of sensors associated with the sweep

getSensorName

public String getSensorName(int which)

Get the name of a selected sensor.

Parameters:

which - the index of the sensor of interest

Returns:

the name of the sensor

See Also:

getNSensors()

sensorIsMoving

public boolean sensorIsMoving(int which)
                       throws DoradeSweep.DoradeSweepException

Return whether the selected sensor is moving.

Parameters:

which - the index of the sensor of interest

Returns:

whether the selected sensor is moving

Throws:

DoradeSweep.DoradeSweepException

See Also:

getNSensors()

getLatitude

public float getLatitude(int which)
                  throws DoradeSweep.MovingSensorException

Get the sensor latitude for a non-moving sensor

Parameters:

which - the index of the sensor of interest

Returns:

static latitude in degrees

Throws:

DoradeSweep.MovingSensorException - if the sensor is moving

See Also:

getLatitudes(int), sensorIsMoving(int), getNSensors()

getLongitude

public float getLongitude(int which)
                   throws DoradeSweep.MovingSensorException

Get the sensor longitude for a non-moving sensor

Parameters:

which - the index of the sensor of interest

Returns:

static longitude in degrees

Throws:

DoradeSweep.MovingSensorException - if the sensor is moving

See Also:

getLongitudes(int), sensorIsMoving(int), getNSensors()

getAltitude

public float getAltitude(int which)
                  throws DoradeSweep.MovingSensorException

Get the sensor altitude for a non-moving sensor

Parameters:

which - the index of the sensor of interest

Returns:

static altitude in km MSL

Throws:

DoradeSweep.MovingSensorException - if the sensor is moving

See Also:

getAltitudes(int), sensorIsMoving(int), getNSensors()

getLatitudes

public float[] getLatitudes(int which)

Get the per-ray array of sensor latitudes.

Parameters:

which - the index of the sensor of interest

Returns:

a per-ray array of sensor latitudes

See Also:

getLatitude(int), getNSensors()

getLongitudes

public float[] getLongitudes(int which)

Get the per-ray array of sensor longitudes.

Parameters:

which - the index of the sensor of interest

Returns:

a per-ray array of sensor longitudes

See Also:

getLongitude(int), getNSensors()

getAltitudes

public float[] getAltitudes(int which)

Get the per-ray array of sensor altitudes.

Parameters:

which - the index of the sensor of interest

Returns:

a per-ray array of sensor altitudes

See Also:

getAltitude(int), getNSensors(), getNRays()

getFixedAngle

public float getFixedAngle()

Get the fixed angle for this sweep.

Returns:

the fixed angle of the sweep, in degrees

getSweepNumber

public int getSweepNumber()

getTime

public Date getTime()

Get the (start) time for this sweep.

Returns:

the start time of the sweep

getTimes

public Date[] getTimes()

getRayTime

public Date getRayTime(int ray)

getRayData

public float[] getRayData(DoradePARM param,
                 int ray)
                   throws DoradeSweep.DoradeSweepException

Get the array of data for the given parameter and ray.

Parameters:

param - the parameter of interest

ray - the index of the ray of interest

Returns:

an array containing unpacked values for every cell for the given parameter and ray. Cells having bad or missing data will hold the value BAD_VALUE

Throws:

DoradeSweep.DoradeSweepException

See Also:

getNCells(int), getNRays(), BAD_VALUE

getRayData

public float[] getRayData(DoradePARM param,
                 int ray,
                 float[] workingArray)
                   throws DoradeSweep.DoradeSweepException

Get the array of data for the given parameter and ray.

Parameters:

param - the parameter of interest

ray - the index of the ray of interest

workingArray - If non-null and the same length as what is needed use this instead.

Returns:

an array containing unpacked values for every cell for the given parameter and ray. Cells having bad or missing data will hold the value BAD_VALUE

Throws:

DoradeSweep.DoradeSweepException

See Also:

getNCells(int), getNRays(), BAD_VALUE

getRangeToFirstCell

public float getRangeToFirstCell(int which)

Get the range to the leading edge of the first cell for the given sensor.

Parameters:

which - index of the sensor of interest

Returns:

range to the leading edge of the first cell for the given sensor, in meters

See Also:

getNSensors()

getCellSpacing

public float getCellSpacing(int which)

Return the cell spacing for the given sensor, if constant, otherwise return -1

Parameters:

which - index of the sensor of interest

Returns:

the constant cell spacing in meters, or -1 if the cell spacing varies

See Also:

getNSensors()

getNCells

public int getNCells(int which)

Get the number of data cells (gates) per ray for the given sensor.

Parameters:

which - index of the sensor of interest

Returns:

the number of cells per ray for the given sensor

See Also:

getNSensors()

getVolumnNumber

public short getVolumnNumber()

getProjectName

public String getProjectName()

getAzimuths

public float[] getAzimuths()

Get the azimuths for all rays in the sweep.

Returns:

array of azimuths for all rays in the sweep, in degrees

See Also:

getNRays()

getElevations

public float[] getElevations()

Get the elevations for all rays in the sweep.

Returns:

array of elevations for all rays in the sweep, in degrees

See Also:

getNRays()

formatDate

public static String formatDate(Date date)

Return a string with a reasonable representation in UTC of the given Date.

Parameters:

date - Date to be represented

Returns:

a string containing a UTC representation of the date

main

public static void main(String[] args)

DoradeSweep class test method. Usage:

$ java ucar.atd.dorade.DoradeSweep <DORADE_sweepfile>

getScanMode

public ScanMode getScanMode()

isDoradeSweep

public static boolean isDoradeSweep(RandomAccessFile file)
                             throws DoradeSweep.DoradeSweepException

Throws:

DoradeSweep.DoradeSweepException

getScanMode

public ScanMode getScanMode(int which)

getUnambiguousVelocity

public float getUnambiguousVelocity(int which)

getunambiguousRange

public float getunambiguousRange(int which)

getradarConstant

public float getradarConstant(int which)

getrcvrGain

public float getrcvrGain(int which)

getantennaGain

public float getantennaGain(int which)

getsystemGain

public float getsystemGain(int which)

gethBeamWidth

public float gethBeamWidth(int which)

getpeakPower

public float getpeakPower(int which)

getnoisePower

public float getnoisePower(int which)