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C This is part of the netCDF package.
C Copyright 2008 University Corporation for Atmospheric Research/Unidata.
C See COPYRIGHT file for conditions of use.
C This program tests netCDF-4 variable functions from fortran, even
C more.
C $Id: ftst_vars2.F,v 1.6 2010/01/20 15:21:46 ed Exp $
program ftst_vars2
implicit none
include 'netcdf.inc'
C This is the name of the data file we will create.
character*(*) FILE_NAME
parameter (FILE_NAME='ftst_vars2.nc')
C We are writing 3D data, a 3 x 5 x 2 grid. Why do I use "x, y, z,"
C and then do everything in order "z, y, x?" Because I am a C
C programmer, and everything in Fortran seems backwards!
integer NDIMS, NTYPES
parameter (NDIMS = 3, NTYPES = 5)
integer NX, NY, NZ
parameter (NX = 3, NY = 5, NZ = 2)
C These will be used to set the per-variable chunk cache.
integer CACHE_SIZE, CACHE_NELEMS, CACHE_PREEMPTION
parameter (CACHE_SIZE = 8, CACHE_NELEMS = 571)
parameter (CACHE_PREEMPTION = 42)
C These will be used to check the setting of the per-variable chunk
C cache.
integer cache_size_in, cache_nelems_in, cache_preemption_in
C NetCDF IDs.
integer ncid, varid(NTYPES), dimids(NDIMS), typeid(NTYPES)
C Name of the variable is stored here.
character*80 var_name
C This is the data array we will write, and a place to store it when
C we read it back in. Z is the fastest varying dimension.
integer data_out(NZ, NY, NX), data_in(NZ, NY, NX)
C Loop indexes, and error handling.
integer i, x, y, z, retval
C Create some pretend data.
do x = 1, NX
do y = 1, NY
do z = 1, NZ
data_out(z, y, x) = (x-1) * NY * NZ + (y-1) * NZ + (z-1)
end do
end do
end do
print *, ''
print *,'*** Testing netCDF-4 vars from F77 with new types.'
C Create the netCDF file.
retval = nf_create(FILE_NAME, NF_NETCDF4, ncid)
if (retval .ne. nf_noerr) call handle_err(retval)
C Define the dimensions.
retval = nf_def_dim(ncid, "z", NZ, dimids(3))
if (retval .ne. nf_noerr) call handle_err(retval)
retval = nf_def_dim(ncid, "y", NY, dimids(2))
if (retval .ne. nf_noerr) call handle_err(retval)
retval = nf_def_dim(ncid, "x", NX, dimids(1))
if (retval .ne. nf_noerr) call handle_err(retval)
C These are the types of vars that will be written.
typeid(1) = NF_UBYTE
typeid(2) = NF_USHORT
typeid(3) = NF_UINT
typeid(4) = NF_INT64
typeid(5) = NF_UINT64
C Define the variables.
do i = 1, NTYPES
write(var_name, 1001) i
1001 format('var', I1)
retval = nf_def_var(ncid, var_name, typeid(i), NDIMS,
& dimids, varid(i))
if (retval .ne. nf_noerr) call handle_err(retval)
C Set variable caches.
retval = nf_set_var_chunk_cache(ncid, varid(i), CACHE_SIZE,
& CACHE_NELEMS, CACHE_PREEMPTION)
if (retval .ne. nf_noerr) call handle_err(retval)
end do
C Check the per-variable cache to make sure it is what we think it
C is.
do i = 1, NTYPES
retval = nf_get_var_chunk_cache(ncid, varid(i), cache_size_in,
& cache_nelems_in, cache_preemption_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (cache_size_in .ne. CACHE_SIZE .or. cache_nelems_in .ne.
& CACHE_NELEMS .or. cache_preemption .ne. CACHE_PREEMPTION)
& stop 8
end do
C Write the pretend data to the file.
do i = 1, NTYPES
retval = nf_put_var_int(ncid, varid(i), data_out)
if (retval .ne. nf_noerr) call handle_err(retval)
end do
C Close the file.
retval = nf_close(ncid)
if (retval .ne. nf_noerr) call handle_err(retval)
C Reopen the file and check again.
retval = nf_open(FILE_NAME, NF_NOWRITE, ncid)
if (retval .ne. nf_noerr) call handle_err(retval)
C Read the data and check it.
do i = 1, NTYPES
retval = nf_get_var_int(ncid, varid(i), data_in)
if (retval .ne. nf_noerr) call handle_err(retval)
do x = 1, NX
do y = 1, NY
do z = 1, NZ
if (data_in(z, y, x) .ne. data_out(z, y, x)) stop 2
end do
end do
end do
end do
C Close the file.
retval = nf_close(ncid)
if (retval .ne. nf_noerr) call handle_err(retval)
print *,'*** SUCCESS!'
end
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