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module netcdf_io_module
use netcdf
implicit none
type :: io_struct
integer :: ncid
integer :: time_dimid, varid_time, varid_series
logical :: is_open = .false.
character(len=128) :: series_name = 'timeseries of variable'
character(len=128) :: series_long_name = 'timeseries of some variable'
character(len=128) :: series_units = 'unit'
end type io_struct
contains
subroutine open_netcdf(filename, ios, time_len)
character(len=*), intent(in) :: filename
type(io_struct), intent(out) :: ios
integer, intent(in) :: time_len
integer :: ierr
ierr = nf90_create(filename, nf90_clobber, ios%ncid)
if (ierr == nf90_noerr) then
ios%is_open = .true.
ierr = nf90_def_dim(ios%ncid, 'time', time_len, ios%time_dimid)
ierr = nf90_def_var(ios%ncid, 'time', nf90_float, ios%time_dimid, ios%varid_time)
ierr = nf90_def_var(ios%ncid, 'series', nf90_float, ios%time_dimid, ios%varid_series)
ierr = nf90_put_att(ios%ncid, ios%varid_series, 'standard_name', ios%series_name)
ierr = nf90_put_att(ios%ncid, ios%varid_series, 'long_name', ios%series_long_name)
ierr = nf90_put_att(ios%ncid, ios%varid_series, 'units', ios%series_units)
ierr = nf90_enddef(ios%ncid)
else
print *, 'Error opening file: ', ierr
ios%is_open = .false.
endif
end subroutine open_netcdf
subroutine write_series(ios, time_data, series_data)
type(io_struct), intent(in) :: ios
real, dimension(:), intent(in) :: time_data, series_data
integer :: ierr
if (.not. ios%is_open) then
print *, "File is not open."
return
endif
ierr = nf90_put_var(ios%ncid, ios%varid_time, time_data)
ierr = nf90_put_var(ios%ncid, ios%varid_series, series_data)
if (ierr /= nf90_noerr) then
print *, 'Error writing data:', ierr
endif
end subroutine write_series
subroutine close_netcdf(ios)
type(io_struct), intent(inout) :: ios
integer :: ierr
ierr = nf90_close(ios%ncid)
ios%is_open = .false.
end subroutine close_netcdf
end module netcdf_io_module