putgb.f

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C> @file
C> @brief Packs and writes a grib message.
C> @author Mark Iredell @author 1994-04-01
 
C> This subprogram is nearly the inverse of getgb.
C>
C> Program history log:
C> - Mark Iredell 1994-04-01
C> - Mark Iredell 1995-10-31 Removed saves and prints.
C> - George Gayno 2009-10-15 Increased maxbit from 16 to 32.
C>
C> @param[in] LUGB Integer unit of the unblocked grib data file.
C> @param[in] KF Integer number of data points.
C> @param[in] KPDS Integer (200) pds parameters.
C> - 1: id of center.
C> - 2: generating process id number.
C> - 3: grid definition.
C> - 4: gds/bms flag (right adj copy of octet 8).
C> - 5: indicator of parameter.
C> - 6: type of level.
C> - 7: height/pressure , etc of level.
C> - 8: year including (century-1).
C> - 9: month of year.
C> - 10: day of month.
C> - 11: hour of day.
C> - 12: minute of hour.
C> - 13: indicator of forecast time unit.
C> - 14: time range 1.
C> - 15: time range 2.
C> - 16: time range flag.
C> - 17: number included in average.
C> - 18: version nr of grib specification.
C> - 19: version nr of parameter table.
C> - 20: nr missing from average/accumulation.
C> - 21: century of reference time of data.
C> - 22: units decimal scale factor.
C> - 23: subcenter number.
C> - 24: pds byte 29, for nmc ensemble products.
C>  - 128 if forecast field error.
C>  - 64 if bias corrected fcst field.
C>  - 32 if smoothed field.
C>  - warning: can be combination of more than 1.
C> - 25: pds byte 30, not used.
C> @param[in] kgds Integer (200) gds parameters
C> - 1: data representation type.
C> - 19: number of vertical coordinate parameters.
C> - 20: octet number of the list of vertical coordinate parameters or
C> octet number of the list of numbers of points in each row or
C> 255 if neither are present.
C> - 21: for grids with pl, number of points in grid.
C> - 22: number of words in each row.
C>
C> - Latitude/longitude grids.
C>  - 2: n(i) nr points on latitude circle.
C>  - 3: n(j) nr points on longitude meridian.
C>  - 4: la(1) latitude of origin.
C>  - 5: lo(1) longitude of origin.
C>  - 6: resolution flag (right adj copy of octet 17).
C>  - 7: la(2) latitude of extreme point.
C>  - 8: lo(2) longitude of extreme point.
C>  - 9: di longitudinal direction of increment.
C>  - 10: dj latitudinal direction increment.
C>  - 11: scanning mode flag (right adj copy of octet 28).
C> - Gaussian grids.
C>  - 2: n(i) nr points on latitude circle.
C>  - 3: n(j) nr points on longitude meridian.
C>  - 4: la(1) latitude of origin.
C>  - 5: lo(1) longitude of origin.
C>  - 6: resolution flag  (right adj copy of octet 17).
C>  - 7: la(2) latitude of extreme point.
C>  - 8: lo(2) longitude of extreme point.
C>  - 9: di longitudinal direction of increment.
C>  - 10: n - nr of circles pole to equator.
C>  - 11: scanning mode flag (right adj copy of octet 28).
C>  - 12: nv - nr of vert coord parameters.
C>  - 13: pv - octet nr of list of vert coord parameters or
C>  pl - location of the list of numbers of points in each row
C>  (if no vert coord parameters are present) or 255 if neither are present.
C> - Polar stereographic grids.
C>  - 2: n(i) nr points along lat circle.
C>  - 3: n(j) nr points along lon circle.
C>  - 4: la(1) latitude of origin.
C>  - 5: lo(1) longitude of origin.
C>  - 6: resolution flag  (right adj copy of octet 17).
C>  - 7: lov grid orientation.
C>  - 8: dx - x direction increment.
C>  - 9: dy - y direction increment.
C>  - 10: projection center flag.
C>  - 11: scanning mode (right adj copy of octet 28).
C> - Spherical harmonic coefficients.
C>  - 2: j pentagonal resolution parameter.
C>  - 3: k pentagonal resolution parameter.
C>  - 4: m pentagonal resolution parameter.
C>  - 5: representation type.
C>  - 6: coefficient storage mode.
C> - Mercator grids.
C>  - 2: n(i) nr points on latitude circle.
C>  - 3: n(j) nr points on longitude meridian.
C>  - 4: la(1) latitude of origin.
C>  - 5: lo(1) longitude of origin.
C>  - 6: resolution flag (right adj copy of octet 17).
C>  - 7: la(2) latitude of last grid point.
C>  - 8: lo(2) longitude of last grid point.
C>  - 9: latit - latitude of projection intersection.
C>  - 10: reserved.
C>  - 11: scanning mode flag (right adj copy of octet 28).
C>  - 12: longitudinal dir grid length.
C>  - 13: latitudinal dir grid length.
C> - Lambert conformal grids.
C>  - 2: nx nr points along x-axis.
C>  - 3: ny nr points along y-axis.
C>  - 4: la1 lat of origin (lower left).
C>  - 5: lo1 lon of origin (lower left).
C>  - 6: resolution (right adj copy of octet 17).
C>  - 7: lov - orientation of grid.
C>  - 8: dx - x-dir increment.
C>  - 9: dy - y-dir increment.
C>  - 10: projection center flag.
C>  - 11: scanning mode flag (right adj copy of octet 28).
C>  - 12: latin 1 - first lat from pole of secant cone inter.
C>  - 13: latin 2 - second lat from pole of secant cone inter.
C>
C> @param[in] lb logical*1 (kf) bitmap if present
C> @param[in] f real (kf) data
C> @param[out] iret integer return code.
C> - 0 all ok.
C> - other w3fi72 grib packer return code.
C>
C> @note Subprogram can be called from a multiprocessing environment.
C> Do not engage the same logical unit from more than one processor.
C>
C> @author Mark Iredell @author 1994-04-01
C-----------------------------------------------------------------------
      SUBROUTINE putgb(LUGB,KF,KPDS,KGDS,LB,F,IRET)
      INTEGER KPDS(200),KGDS(200)
      LOGICAL*1 LB(KF)
      REAL F(KF)
      parameter(maxbit=32)
      INTEGER IBM(KF),IPDS(200),IGDS(200),IBDS(200)
      REAL FR(KF)
      CHARACTER PDS(400),GRIB(1000+KF*(MAXBIT+1)/8)
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C  GET W3FI72 PARAMETERS
      CALL r63w72(kpds,kgds,ipds,igds)
      ibds=0
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C  COUNT VALID DATA
      kbm=kf
      IF(ipds(7).NE.0) THEN
        kbm=0
        DO i=1,kf
          IF(lb(i)) THEN
            ibm(i)=1
            kbm=kbm+1
          ELSE
            ibm(i)=0
          ENDIF
        ENDDO
        IF(kbm.EQ.kf) ipds(7)=0
      ENDIF
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C  GET NUMBER OF BITS AND ROUND DATA
      IF(kbm.EQ.0) THEN
        DO i=1,kf
          fr(i)=0.
        ENDDO
        nbit=0
      ELSE
        CALL getbit(ipds(7),0,ipds(25),kf,ibm,f,fr,fmin,fmax,nbit)
        nbit=min(nbit,maxbit)
      ENDIF
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C  PACK AND WRITE GRIB DATA
      CALL w3fi72(0,fr,0,nbit,0,ipds,pds,
     &            1,255,igds,0,0,ibm,kf,ibds,
     &            kfo,grib,lgrib,iret)
      IF(iret.EQ.0) CALL wryte(lugb,lgrib,grib)
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      RETURN
      END