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pastecoords.f90
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program pastecoords
use iso_fortran_env
use netcdf
implicit none
integer, parameter :: sp = real32
integer, parameter :: dp = real64
integer, parameter :: i2 = int16
character(100) :: infile
character(100) :: outfile
integer :: status
integer :: ncid
integer :: dimid
integer :: varid
integer :: xlen
integer :: ylen
real(dp), dimension(2) :: lonrange
real(dp), dimension(2) :: latrange
real(dp) :: dx2
real(dp) :: dy2
real(dp), allocatable, dimension(:) :: lon
real(dp), allocatable, dimension(:) :: lat
integer, parameter :: nl = 6
real(sp), parameter, dimension(nl) :: zpos = [ 2.5, 10., 22.5, 45., 80., 150. ]
real(sp), parameter, dimension(nl) :: dz = [ 5., 10., 15., 30., 40., 100. ]
integer :: l
real(sp), dimension(2,nl) :: layer_bnds
! ------------------------------------------------------------------------------------------------------------
do l = 1,nl
layer_bnds(1,l) = zpos(l) - dz(l) / 2.
layer_bnds(2,l) = zpos(l) + dz(l) / 2.
write(0,*)l,layer_bnds(:,l)
end do
call getarg(1,infile)
call getarg(2,outfile)
! -------------------------------------------------------
! read input file
write(0,*)'reading'
status = nf90_open(infile,nf90_nowrite,ncid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_dimid(ncid,'lon',dimid)
if (status == nf90_ebaddim) status = nf90_inq_dimid(ncid,'x',dimid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inquire_dimension(ncid,dimid,len=xlen)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_dimid(ncid,'lat',dimid)
if (status == nf90_ebaddim) status = nf90_inq_dimid(ncid,'y',dimid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inquire_dimension(ncid,dimid,len=ylen)
if (status /= nf90_noerr) call handle_err(status)
allocate(lon(xlen))
allocate(lat(ylen))
write(0,*)xlen,ylen
status = nf90_inq_varid(ncid,'lon',varid)
if (status == nf90_enotvar) status = nf90_inq_varid(ncid,'x',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_get_var(ncid,varid,lon)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'lat',varid)
if (status == nf90_enotvar) status = nf90_inq_varid(ncid,'y',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_get_var(ncid,varid,lat)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_close(ncid)
if (status /= nf90_noerr) call handle_err(status)
! -------------------------------------------------------
dx2 = (lon(2) - lon(1)) / 2._dp
lonrange(1) = lon(1) - dx2
lonrange(2) = lon(xlen) + dx2
dy2 = (lat(2) - lat(1)) / 2._dp
latrange(1) = lat(1) - dy2
latrange(2) = lat(ylen) + dy2
! -------------------------------------------------------
! write to output file
write(0,*)'writing coords'
status = nf90_open(outfile,nf90_write,ncid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'lon',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_var(ncid,varid,lon)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_att(ncid,varid,'actual_range',lonrange)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'lat',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_var(ncid,varid,lat)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_att(ncid,varid,'actual_range',latrange)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'depth',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_var(ncid,varid,zpos)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'dz',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_var(ncid,varid,dz)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_inq_varid(ncid,'layer_bnds',varid)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_put_var(ncid,varid,layer_bnds)
if (status /= nf90_noerr) call handle_err(status)
status = nf90_close(ncid)
if (status /= nf90_noerr) call handle_err(status)
! -------------------------------------------------------
contains
subroutine handle_err(status)
! Internal subroutine - checks error status after each netcdf call,
! prints out text message each time an error code is returned.
integer, intent (in) :: status
if(status /= nf90_noerr) then
print *, trim(nf90_strerror(status))
stop
end if
end subroutine handle_err
! -------------------------------------------------------
end program pastecoords