prep_grid_cartesian.F90

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!SFX_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
!SFX_LIC This is part of the SURFEX software governed by the CeCILL-C licence
!SFX_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt  
!SFX_LIC for details. version 1.
!     #########
      SUBROUTINE prep_grid_cartesian (&
                                      hfiletype,hinterp_type,kni)
!     ##########################################################################
!
!!****  *PREP_GRID_CARTESIAN* - reads EXTERNALIZED Surface grid.
!!
!!    PURPOSE
!!    -------
!!
!!**  METHOD
!!    ------
!!
!!    EXTERNAL
!!    --------
!!
!!    IMPLICIT ARGUMENTS
!!    ------------------
!!
!!
!!    REFERENCE
!!    ---------
!!
!!
!!    AUTHOR
!!    ------
!!
!!      V. Masson
!!
!!    MODIFICATIONS
!!    -------------
!!      Original   06/2003
!-------------------------------------------------------------------------------
!
!*      0. DECLARATIONS
!          ------------
!
!
!
!
USE modi_read_surf
!
USE modd_grid_cartesian, ONLY : xx, xy, nx, ny
!
!
USE yomhook   ,ONLY : lhook,   dr_hook
USE parkind1  ,ONLY : jprb
!
IMPLICIT NONE
!
!* 0.1. Declaration of arguments
!       ------------------------
!
!
!
 CHARACTER(LEN=6),  INTENT(IN)    :: hfiletype    ! file type
 CHARACTER(LEN=6),  INTENT(OUT)   :: hinterp_type ! Grid type
INTEGER,           INTENT(OUT)   :: kni          ! number of points
!
!* 0.2 Declaration of local variables
!      ------------------------------
!
 CHARACTER(LEN=12) :: yrecfm    ! Name of the article to be read
INTEGER           :: iresp
!
INTEGER           :: jl        ! loop counter
REAL, DIMENSION(:), ALLOCATABLE :: zw ! work array
REAL(KIND=JPRB) :: zhook_handle
!
!-----------------------------------------------------------------------
!
!*     Grid
!      ----
!
IF (lhook) CALL dr_hook('PREP_GRID_CARTESIAN',0,zhook_handle)
yrecfm = 'IMAX'
 CALL read_surf(&
                hfiletype,yrecfm,nx,iresp)
yrecfm = 'JMAX'
 CALL read_surf(&
                hfiletype,yrecfm,ny,iresp)
!
kni = nx * ny
!
ALLOCATE(zw(kni))
!
IF (ALLOCATED(xx)) DEALLOCATE(xx)
ALLOCATE(xx(nx))
yrecfm = 'XX'
 CALL read_surf(&
                hfiletype,yrecfm,zw,iresp,hdir='A')
xx = zw(1:nx)


IF (ALLOCATED(xy)) DEALLOCATE(xy)
ALLOCATE(xy(ny))
yrecfm = 'YY'
 CALL read_surf(&
                hfiletype,yrecfm,zw,iresp,hdir='A')
DO jl=1,kni
  IF (mod(jl,nx)==0) xy(jl/nx) = zw(jl)
END DO
DEALLOCATE(zw)
!
!-----------------------------------------------------------------------
IF(kni==1)THEN
  hinterp_type = 'UNIF  '
ELSE
  hinterp_type = 'BILIN '
ENDIF
IF (lhook) CALL dr_hook('PREP_GRID_CARTESIAN',1,zhook_handle)
!-----------------------------------------------------------------------
!
END SUBROUTINE prep_grid_cartesian