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C Copyright 1981-2007 ECMWF
C
C Licensed under the GNU Lesser General Public License which
C incorporates the terms and conditions of version 3 of the GNU
C General Public License.
C See LICENSE and gpl-3.0.txt for details.
C
INTEGER FUNCTION IARESET (KSEC2, KSEC4, KVALUES, KPR, KERR)
C
C---->
C**** *IARESET*
C
C PURPOSE
C _______
C
C Generate the output field definition.
C
C INTERFACE
C _________
C
C IERR = IARESET (KSEC2, KSEC4, KVALUES, KPR, KERR)
C
C Input parameters
C ________________
C
C KSEC2 - The GRIB Section 2 array for the input field.
C
C KSEC4 - The GRIB Section 4 array for the input field.
C
C KVALUES - The number of values in the output field.
C
C KPR - The debug print switch.
C 0 , No debugging output.
C 1 , Produce debugging output.
C
C KERR - The error control flag.
C -ve, No error message. Return error code.
C 0 , Hard failure with error message.
C +ve, Print error message. Return error code.
C
C Output parameters
C ________________
C
C KSEC2 - The modified GRIB Section 2 array for the output
C field.
C
C KSEC4 - The modified GRIB Section 4 array for the output
C field.
C
C Return value
C ____________
C
C The error indicator (INTEGER).
C
C Error and Warning Return Values
C _______________________________
C
C None
C
C Common block usage
C __________________
C
C nofld.common - This file contains all the output field
C definition variables.
C
C NOACC - Number of packing bits to be used for output
C GRIB field is used.
C NOAREA - Output field area definition (N/W/S/E) is used.
C NOGAUSS - Output field Gaussian truncation is used.
C NOGRID - Output field grid definition (WE/NS) is used.
C NONS - Number of grid points in NS direction for output
C field is used.
C NOREPR - Output field representation is used.
C NOSCNM - Output field scanning mode is used.
C NOWE - Number of grid points in WE direction for output
C field is used.
C
C EXTERNALS
C _________
C
C SETPAR - Standard routine used to generate "missing" data
C values for GRIB fields.
C INTLOG(R) - Logs messages.
C
C METHOD
C ______
C
C This routine modifies sections 2 and 4 of the GRIB definition
C to match the output field.
C
C REFERENCE
C _________
C
C None
C
C COMMENTS
C ________
C
C Program contains sections 0 to 4 and 9
C
C AUTHOR
C ______
C
C K. Fielding *ECMWF* Apr 1994
C
C MODIFICATIONS
C _____________
C
C None
C
C----<
C _______________________________________________________
C
C
C* Section 0. Definition of variables.
C _______________________________________________________
C
C* Prefix conventions for variable names
C
C Logical L (but not LP), global or common.
C O, dummy argument
C G, local variable
C LP, parameter.
C Character C, global or common.
C H, dummy argument
C Y (but not YP), local variable
C YP, parameter.
C Integer M and N, global or common.
C K, dummy argument
C I, local variable
C J (but not JP), loop control
C JP, parameter.
C REAL A to F and Q to X, global or common.
C P (but not PP), dummy argument
C Z, local variable
C PP, parameter.
C
C Implicit statement to force declarations
C
IMPLICIT NONE
C
#include "parim.h"
#include "nofld.common"
C
C Dummy arguments
INTEGER KVALUES, KPR, KERR
INTEGER KSEC2 (JPGRIB_ISEC2), KSEC4 (JPGRIB_ISEC4)
C
C Local variables
INTEGER IWEINC, ITEMP, IMISS, IERR
INTEGER JPROUTINE
PARAMETER (JPROUTINE = 24200)
C
C External functions
C
C Transform definition variables that must be preserved
C
C
C _______________________________________________________
C
C* Section 1. Initialisation
C _______________________________________________________
C
100 CONTINUE
C
IF (KPR.GE.1) CALL INTLOG(JP_DEBUG,'IARESET: Section 1.',JPQUIET)
C
IARESET = 0
IERR = 0
C
IF (KPR .GE. 1) THEN
CALL INTLOG(JP_DEBUG,'IARESET: Input parameters.',JPQUIET)
CALL INTLOG(JP_DEBUG,
X 'IARESET: No.bits for output field packing = ',NOACC)
CALL INTLOG(JP_DEBUG,
X 'IARESET: No.values to be packed = ',KVALUES)
IF (NOREPR .EQ. JPREGULAR) THEN
CALL INTLOG(JP_DEBUG,
X 'IARESET: West-East stride = ', NOGRID (JPWESTEP))
CALL INTLOG(JP_DEBUG,
X 'IARESET: North-South stride = ', NOGRID (JPNSSTEP))
ELSE
CALL INTLOG(JP_DEBUG,
X 'IARESET: Gaussian truncation = ',NOGAUSS)
ENDIF
ENDIF
C
C Get GRIB missing data value
C
CALL SETPAR (ITEMP, IMISS, KPR)
C
C Representation
C
KSEC2 (JPSEC2_REP) = NOREPR
KSEC2 (JPSEC2_SCAN) = NOSCNM
C
C _______________________________________________________
C
C* Section 2. Set Grib Section 2 regular grid variables
C _______________________________________________________
C
200 CONTINUE
C
IF (NOREPR .EQ. JPREGULAR) THEN
C
IF (KPR.GE.1) CALL INTLOG(JP_DEBUG,'IARESET: Section 2.',JPQUIET)
C
KSEC2 (JPSEC2_QUASI) = 0
C
KSEC2 (JPSEC2_NLONG) = NOWE
KSEC2 (JPSEC2_NLAT) = NONS
C
KSEC2 (JPSEC2_NORTH) = NOAREA (JPNORTH) / 10
KSEC2 (JPSEC2_WEST) = NOAREA (JPWEST) / 10
KSEC2 (JPSEC2_SOUTH) = NOAREA (JPSOUTH) / 10
C
IF (MOD (NOAREA (JPEAST), 10) .EQ. 5) THEN
KSEC2 (JPSEC2_EAST) = NOAREA (JPEAST) / 10 + 1
ELSE
KSEC2 (JPSEC2_EAST) = NOAREA (JPEAST) / 10
ENDIF
C
IF (MOD (NOGRID (JPWESTEP), 10) .EQ. 5 .OR.
X MOD (NOGRID (JPNSSTEP), 10) .EQ. 5) THEN
C
KSEC2 (JPSEC2_RESOL) = 0
KSEC2 (JPSEC2_DLONG) = IMISS
KSEC2 (JPSEC2_DLAT) = IMISS
C
ELSE
C
KSEC2 (JPSEC2_RESOL) = 128
KSEC2 (JPSEC2_DLONG) = NOGRID (JPWESTEP) / 10
KSEC2 (JPSEC2_DLAT) = NOGRID (JPNSSTEP) / 10
C
ENDIF
C
C _______________________________________________________
C
C* Section 3. Set Grib Section 2 Gaussian values
C _______________________________________________________
C
300 CONTINUE
C
ELSE IF (NOREPR .EQ. JPGAUSSIAN) THEN
C
IF (KPR.GE.1) CALL INTLOG(JP_DEBUG,'IARESET: Section 3.',JPQUIET)
C
KSEC2 (JPSEC2_QUASI) = 0
C
KSEC2 (JPSEC2_GTRUNC) = NOGAUSS
KSEC2 (JPSEC2_NLONG) = NOWE
KSEC2 (JPSEC2_NLAT) = NONS
C
KSEC2 (JPSEC2_NORTH) = NOAREA (JPNORTH) / 10
KSEC2 (JPSEC2_WEST) = NOAREA (JPWEST) / 10
KSEC2 (JPSEC2_SOUTH) = NOAREA (JPSOUTH) / 10
C
IF (MOD (NOAREA (JPEAST), 10) .EQ. 5) THEN
KSEC2 (JPSEC2_EAST) = NOAREA (JPEAST) / 10 + 1
ELSE
KSEC2 (JPSEC2_EAST) = NOAREA (JPEAST) / 10
ENDIF
C
IWEINC = JP90 / NOGAUSS
C
IF (MOD (IWEINC, 10) .EQ. 5) THEN
C
KSEC2 (JPSEC2_RESOL) = 0
KSEC2 (JPSEC2_DLONG) = IMISS
C
ELSE
C
KSEC2 (JPSEC2_RESOL) = 128
KSEC2 (JPSEC2_DLONG) = IWEINC / 10
C
ENDIF
C
ENDIF
C
C _______________________________________________________
C
C* Section 4. Set Grib Section 4 values
C _______________________________________________________
C
400 CONTINUE
C
IF (KPR.GE.1) CALL INTLOG(JP_DEBUG,'IARESET: Section 4.',JPQUIET)
C
KSEC4 (JPSEC4_NVALUE) = KVALUES
C
IF (NOACC .NE. 0) KSEC4 (JPSEC4_NBITS) = NOACC
C
C _______________________________________________________
C
C* Section 9. Return to calling routine. Format statements
C _______________________________________________________
C
900 CONTINUE
C
IF (KPR.GE.1) CALL INTLOG(JP_DEBUG,'IARESET: Section 9.',JPQUIET)
C
RETURN
END
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