ucar.unidata.data.adt

Class Functions

java.lang.Object

ucar.unidata.data.adt.Functions

public class Functions
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Functions()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	adt_atcffilename(java.lang.String StormNameInput, java.lang.String StormSiteIDInput) Derived ATCF file name using various input parameters.
static double	adt_getpwval(int PressureWindIDValue, double CIValue, double LatitudeInput, double LongitudeInput) Obtain pressure or wind value (for Atlantic or West Pacific storms) given the intensity estimate value.
static java.lang.String	adt_julian2cmonth(int JulianDateInputValue) Convert julian date to YYYYMMMDD format for output.
static int[]	adt_oceanbasin(double LatitudeInput, double LongitudeInput) Determine ocean basin given latitude and longitude position of storm.
static java.lang.String	adt_sattypes(int SatelliteIDInput) Obtain satellite name given ID number.
static double	adt_slopecal(double SearchTimeInterval, int SlopeInterceptFlag) Calculate slope or y-intercept of all points over SearchTimeInterval period Inputs : SearchTimeInterval - time period to calculate slope or y-intercept SlopeInterceptFlag - flag value indicating slope or y-intercept calculation and parameter to utilize 1 = Final T# (will return slope) 2 = Adjusted Raw T# (will return slope) 3 = latitude (will return y-intercept) 4 = longitude (will return y-intercept) HistoryCurrentPointer_Global contains current analysis information
static double	adt_XLZA(double rlat, double rlon, double plat, double plon) Approximate local zenith angle (angle from vertical to the satellite).
static int[]	adt_yddmy(int JulianDateInput) Convert yyyyddd to dd/mm/yy format.
static double	calctime(int InputJulianDate, int InputHMSTime) Compute time in ADT xxxxx.yyy units, where xxxxx is the day and yyy is the percentage of the day.
static int	cmonth2julian(java.lang.String InputDateCharString) Convert YYYYMMMDD format character string value to julian date Integer.
static double[]	distance_angle(double EndLatitudeInput, double EndLongitudeInput, double StartLatitudeInput, double StartLongitudeInput, int UnitFlagID)
static double[]	distance_angle2(double StartLatitudeInput, double StartLongitudeInput, double DistanceInput, double AngleInput) Calculate a latitude and longitude position from an initial latitude/longitude and distance/angle values.
static int	idmyyd(int InputDay, int InputMonth, int InputYear) Convert dd/mm/yy to yyyyddd format.

Methods inherited from class java.lang.Object

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

Constructor Detail

Functions

public Functions()

Method Detail

calctime

public static double calctime(int InputJulianDate,
                              int InputHMSTime)

Compute time in ADT xxxxx.yyy units, where xxxxx is the day and yyy is the percentage of the day. This routine will also correct for Y2K problems.

Parameters:

InputJulianDate - Julian date.

InputHMSTime - Time in HHMMSS format.

Returns:

Date/Time value in xxxxx.yyy units.

cmonth2julian

public static int cmonth2julian(java.lang.String InputDateCharString)

Convert YYYYMMMDD format character string value to julian date Integer.

Parameters:

InputDateCharString - Character representation of date in YYYYmonDD format where DD and YYYY are integers and mon is a three character abbreviation for the month (e.g. 2000MAR13).

Returns:

Julian Date. Note: value may be 0 if there was a problem.

idmyyd

public static int idmyyd(int InputDay,
                         int InputMonth,
                         int InputYear)

Convert dd/mm/yy to yyyyddd format.

Parameters:

InputDay - Day.

InputMonth - Month (integer).

InputYear - Year (YY or YYYY).

Returns:

Julian date or 0 (0=bad input data).

adt_yddmy

public static int[] adt_yddmy(int JulianDateInput)

Convert yyyyddd to dd/mm/yy format.

Parameters:

JulianDateInput - Julian day (yyyyddd).

Returns:

Array of three values. First value is the day, second value is the month, and the third value is the year (yyyy).

adt_julian2cmonth

public static java.lang.String adt_julian2cmonth(int JulianDateInputValue)

Convert julian date to YYYYMMMDD format for output.

Parameters:

JulianDateInputValue - Julian date representation of date.

Returns:

Character representation of date in YYYYmonDD format where DD and YYYY are integers and mon is a three character abbreviation for the month (e.g. 2000MAR13)

distance_angle

public static double[] distance_angle(double EndLatitudeInput,
                                      double EndLongitudeInput,
                                      double StartLatitudeInput,
                                      double StartLongitudeInput,
                                      int UnitFlagID)

distance_angle2

public static double[] distance_angle2(double StartLatitudeInput,
                                       double StartLongitudeInput,
                                       double DistanceInput,
                                       double AngleInput)

Calculate a latitude and longitude position from an initial latitude/longitude and distance/angle values.

Parameters:

StartLatitudeInput - Initial latitude.

StartLongitudeInput - Initial longitude.

DistanceInput - Distance from initial position.

AngleInput - Angle from initial position. Outputs : EndLatitude_Return - derived latitude EndLongitude_Return - derived longitude

adt_oceanbasin

public static int[] adt_oceanbasin(double LatitudeInput,
                                   double LongitudeInput)

Determine ocean basin given latitude and longitude position of storm. Outputs : None Return : basin type (0=atlantic,1=west pacific,2,east pacific,3=Indian)

Parameters:

LatitudeInput - Latitude.

LongitudeInput - Longitude.

adt_slopecal

public static double adt_slopecal(double SearchTimeInterval,
                                  int SlopeInterceptFlag)

Calculate slope or y-intercept of all points over SearchTimeInterval period Inputs : SearchTimeInterval - time period to calculate slope or y-intercept SlopeInterceptFlag - flag value indicating slope or y-intercept calculation and parameter to utilize 1 = Final T# (will return slope) 2 = Adjusted Raw T# (will return slope) 3 = latitude (will return y-intercept) 4 = longitude (will return y-intercept) HistoryCurrentPointer_Global contains current analysis information

Returns:

Slope or Y-Intercept value of line over time period desired

adt_getpwval

public static double adt_getpwval(int PressureWindIDValue,
                                  double CIValue,
                                  double LatitudeInput,
                                  double LongitudeInput)

Obtain pressure or wind value (for Atlantic or West Pacific storms) given the intensity estimate value.

Parameters:

PressureWindIDValue - Flag for wind (1) or pressure (0) output.

CIValue - Current Intensity (CI) value

LatitudeInput - Latitude value of analysis

LongitudeInput - Longitude value of analysis

Returns:

Pressure or Wind Speed value.

adt_sattypes

public static java.lang.String adt_sattypes(int SatelliteIDInput)

Obtain satellite name given ID number.

Parameters:

SatelliteIDInput - Internal ADT satellite ID number.

Returns:

Satellite character string ID.

adt_atcffilename

public static java.lang.String adt_atcffilename(java.lang.String StormNameInput,
                                                java.lang.String StormSiteIDInput)

Derived ATCF file name using various input parameters. Inputs : StormName_Input - Storm ID character string value (e.g. 12L) Outputs : ATCFFileName - Complete file name and path for ATCF file Return : 0

adt_XLZA

public static double adt_XLZA(double rlat,
                              double rlon,
                              double plat,
                              double plon)

Approximate local zenith angle (angle from vertical to the satellite).

Parameters:

rlat - Latitude of target position on earth.

rlon - Longitude of target position on earth.

plat - Latitude of sub-satellite point.

plon - Longitude of sub-satellite point.

Returns:

local zenith angle