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! This is part of the netCDF package.
! Copyright 2006 University Corporation for Atmospheric Research/Unidata.
! See COPYRIGHT file for conditions of use.
! This program tests netCDF-4 fill values.
! Russ Rew, 2009
program f90tst_fill
use typeSizes
use netcdf
implicit none
! This is the name of the data file we will create.
character (len = *), parameter :: FILE_NAME = "f90tst_fill2.nc"
integer, parameter :: MAX_DIMS = 2
integer, parameter :: NX = 16, NY = 16
integer, parameter :: HALF_NX = NX / 2, HALF_NY = NY / 2
integer, parameter :: ZERO_COUNT = 0
integer, parameter :: NUM_VARS = 8
character (len = *), parameter :: var_name(NUM_VARS) = &
(/ 'byte ', 'short ', 'int ', 'float ', 'double', 'ubyte ', &
'ushort', 'uint ' /)
integer :: ncid, varid(NUM_VARS), dimids(MAX_DIMS)
integer :: var_type(NUM_VARS) = (/ nf90_byte, nf90_short, nf90_int, &
nf90_float, nf90_double, nf90_ubyte, nf90_ushort, nf90_uint /)
integer :: x_dimid, y_dimid
integer :: byte_out(HALF_NY, HALF_NX), byte_in(NY, NX)
integer :: short_out(HALF_NY, HALF_NX), short_in(NY, NX)
integer :: int_out(HALF_NY, HALF_NX), int_in(NY, NX)
real :: areal_out(HALF_NY, HALF_NX), areal_in(NY, NX)
real :: double_out(HALF_NY, HALF_NX), double_in(NY, NX)
integer :: ubyte_out(HALF_NY, HALF_NX), ubyte_in(NY, NX)
integer :: ushort_out(HALF_NY, HALF_NX), ushort_in(NY, NX)
integer (kind = EightByteInt) :: uint_out(HALF_NY, HALF_NX), uint_in(NY, NX)
integer :: nvars, ngatts, ndims, unlimdimid, file_format
integer :: x, y, v
integer :: start_out(MAX_DIMS), count_out(MAX_DIMS)
integer :: start_in(MAX_DIMS), count_in(MAX_DIMS)
print *
print *, '*** Testing netCDF-4 fill values with unlimited dimension.'
! Create some pretend data.
do x = 1, HALF_NX
do y = 1, HALF_NY
byte_out(y, x) = -1
short_out(y, x) = -2
int_out(y, x) = -4
areal_out(y, x) = 2.5
double_out(y, x) = -4.5
ubyte_out(y, x) = 1
ushort_out(y, x) = 2
uint_out(y, x) = 4
end do
end do
! Create the netCDF file.
call handle_err(nf90_create(FILE_NAME, nf90_netcdf4, ncid))
! Define the dimensions.
call handle_err(nf90_def_dim(ncid, "x", NF90_UNLIMITED, x_dimid))
call handle_err(nf90_def_dim(ncid, "y", NY, y_dimid))
dimids = (/ y_dimid, x_dimid /)
! Define the variables.
do v = 1, NUM_VARS
call handle_err(nf90_def_var(ncid, var_name(v), var_type(v), dimids, varid(v)))
end do
! Write one-quarter of the data.
count_out = (/ HALF_NX, HALF_NY /)
start_out = (/ HALF_NX + 1, HALF_NY + 1 /)
call handle_err(nf90_put_var(ncid, varid(1), byte_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(2), short_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(3), int_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(4), areal_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(5), double_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(6), ubyte_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(7), ushort_out, start = start_out, count = count_out))
call handle_err(nf90_put_var(ncid, varid(8), uint_out, start = start_out, count = count_out))
! Test when one dimension of count is 0
count_out = (/ HALF_NX, ZERO_COUNT /)
call handle_err(nf90_put_var(ncid, varid(3), int_out, start = start_out, count = count_out))
count_out = (/ HALF_NX, HALF_NY /)
! Close the file.
call handle_err(nf90_close(ncid))
! Reopen the file.
call handle_err(nf90_open(FILE_NAME, nf90_nowrite, ncid))
! Check some stuff out.
call handle_err(nf90_inquire(ncid, ndims, nvars, ngatts, unlimdimid, file_format))
if (ndims /= 2 .or. nvars /= NUM_VARS .or. ngatts /= 0 .or. unlimdimid /= 1 .or. &
file_format /= nf90_format_netcdf4) stop 2
! Read all the data.
start_in = (/ 1, 1 /)
count_in = (/ NX, NY /)
call handle_err(nf90_get_var(ncid, varid(1), byte_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(2), short_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(3), int_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(4), areal_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(5), double_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(6), ubyte_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(7), ushort_in, start = start_in, count = count_in))
call handle_err(nf90_get_var(ncid, varid(8), uint_in, start = start_in, count = count_in))
! Check the data. All the data except the third quadrant are fill
! value.
do x = 1, NX
do y = 1, NY
if ((x .gt. HALF_NX) .and. (y .gt. HALF_NY)) then
if (byte_in(y, x) .ne. -1) stop 13
if (short_in(y, x) .ne. -2) stop 14
if (int_in(y, x) .ne. -4) stop 15
if (areal_in(y, x) .ne. 2.5) stop 16
if (double_in(y, x) .ne. -4.5) stop 17
if (ubyte_in(y, x) .ne. 1) stop 18
if (ushort_in(y, x) .ne. 2) stop 19
if (uint_in(y, x) .ne. 4) stop 20
else
if (byte_in(y, x) .ne. nf90_fill_byte) stop 3
if (short_in(y, x) .ne. nf90_fill_short) stop 4
if (int_in(y, x) .ne. nf90_fill_int) stop 5
if (areal_in(y, x) .ne. nf90_fill_real) stop 6
if (double_in(y, x) .ne. nf90_fill_double) stop 7
if (ubyte_in(y, x) .ne. nf90_fill_ubyte) stop 8
if (ushort_in(y, x) .ne. nf90_fill_ushort) stop 9
if (uint_in(y, x) .ne. nf90_fill_uint) stop 10
endif
end do
end do
! Close the file.
call handle_err(nf90_close(ncid))
print *,'*** SUCCESS!'
contains
! This subroutine handles errors by printing an error message and
! exiting with a non-zero status.
subroutine handle_err(errcode)
use netcdf
implicit none
integer, intent(in) :: errcode
if(errcode /= nf90_noerr) then
print *, 'Error: ', trim(nf90_strerror(errcode))
stop 99
endif
end subroutine handle_err
end program f90tst_fill
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