Package ucar.nc2.grib

Class GribUtils

java.lang.Object

ucar.nc2.grib.GribUtils

public class GribUtils
extends Object

General Utilities used by GRIB code.

Since:

11/16/11

Field Summary

Fields

Modifier and Type	Field	Description
static String	CENTER
static String	GEN_PROCESS
static String	SUBCENTER
static String	TABLE_VERSION

Constructor Summary

Constructors

Constructor	Description
GribUtils()

Method Summary

Modifier and Type	Method	Description
static String	cleanupDescription(String desc)
static String	cleanupUnits(String unit)
static CalendarPeriod	getCalendarPeriod(int timeUnit)	Convert a time unit to a CalendarPeriod GRIB1 and GRIB2 are the same (!)
static CalendarDate	getValidTime(CalendarDate refDate, int timeUnit, int offset)
static String	makeNameFromDescription(String desc)
static boolean	scanModeSameDirection(int scanMode)	All rows scan in the same/opposite direction.
static boolean	scanModeXisConsecutive(int scanMode)	Adjacent points in x/y direction are consecutive.
static boolean	scanModeXisPositive(int scanMode)	X Points scan in +/- direction.
static boolean	scanModeYisPositive(int scanMode)	Y Points scan in +/- direction.

Methods inherited from class java.lang.Object

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

Field Detail

CENTER

public static final String CENTER

See Also:

Constant Field Values

SUBCENTER

public static final String SUBCENTER

See Also:

Constant Field Values

GEN_PROCESS

public static final String GEN_PROCESS

See Also:

Constant Field Values

TABLE_VERSION

public static final String TABLE_VERSION

See Also:

Constant Field Values

Constructor Detail

GribUtils

public GribUtils()

Method Detail

getCalendarPeriod

public static CalendarPeriod getCalendarPeriod(int timeUnit)

Convert a time unit to a CalendarPeriod GRIB1 and GRIB2 are the same (!)

Parameters:

timeUnit - (GRIB1 table 4) (GRIB2 Code table 4.4 : Indicator of unit of time range)

Returns:

equivalent CalendarPeriod

getValidTime

public static CalendarDate getValidTime(CalendarDate refDate,
                                        int timeUnit,
                                        int offset)

cleanupUnits

public static String cleanupUnits(String unit)

cleanupDescription

public static String cleanupDescription(String desc)

makeNameFromDescription

public static String makeNameFromDescription(String desc)

scanModeXisPositive

public static boolean scanModeXisPositive(int scanMode)

X Points scan in +/- direction. Grib 1 or 2. Positive means west to east along a parallel, or left to right along an X-axis..

Parameters:

scanMode - scanMode byte

Returns:

true: x points scan in positive direction, false: x points scan in negetive direction

scanModeYisPositive

public static boolean scanModeYisPositive(int scanMode)

Y Points scan in +/- direction. Grib 1 or 2. Positive means south to north along a meridian, or bottom to top along a Y-axis.

Parameters:

scanMode - scanMode byte

Returns:

true: y points scan in positive direction, false: y points scan in negetive direction

scanModeXisConsecutive

public static boolean scanModeXisConsecutive(int scanMode)

Adjacent points in x/y direction are consecutive. Grib 1 or 2.

Parameters:

scanMode - scanMode byte

Returns:

true: x points are consecutive (row) false: y points are consecutive (col)

scanModeSameDirection

public static boolean scanModeSameDirection(int scanMode)

All rows scan in the same/opposite direction. Grib 2 only.

Parameters:

scanMode - scanMode byte

Returns:

true: All rows scan in the same direction, false: Adjacent rows scan in the opposite direction, the first row scan is as defined by previous flags