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C This is part of the netCDF package.
C Copyright 2007 University Corporation for Atmospheric Research/Unidata.
C See COPYRIGHT file for conditions of use.
C This program tests netCDF-4 user defined types from fortran.
C $Id: ftst_types.F,v 1.6 2009/01/25 14:33:44 ed Exp $
program ftst_types
USE netcdf4_f03
implicit none
C This is the name of the data file we will create.
character*(*) FILE_NAME
parameter (FILE_NAME='ftst_types.nc')
C We are writing 2D data, a 6 x 12 grid.
integer NDIMS
parameter (NDIMS=2)
integer NX, NY
parameter (NX = 6, NY = 12)
C NetCDF IDs.
integer ncid, varid, dimids(NDIMS)
integer wind_typeid
integer x_dimid, y_dimid
integer typeids(1)
C Info about the type we'll create.
integer size_in, base_type_in, nfields_in, class_in
character*80 name_in
character*(*) type_name, u_name, v_name
parameter (type_name = 'wind_t', u_name = 'U', v_name = 'V')
integer ntypes
integer WIND_T_SIZE
parameter (WIND_T_SIZE = 8)
integer offset_in, field_typeid_in, ndims_in, dim_sizes_in(1)
C This is the data array we will write, and a place to store it when
C we read it back in.
integer data_out(NY, NX), data_in(NY, NX)
C Loop indexes, and error handling.
integer x, y, retval
C Create some pretend data.
do x = 1, NX
do y = 1, NY
data_out(y, x) = (x - 1) * NY + (y - 1)
end do
end do
print *, ''
print *,'*** Testing netCDF-4 compound type from F77.'
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, "x", NX, x_dimid)
if (retval .ne. nf_noerr) call handle_err(retval)
retval = nf_def_dim(ncid, "y", NY, y_dimid)
if (retval .ne. nf_noerr) call handle_err(retval)
C Define a compound type.
retval = nf_def_compound(ncid, WIND_T_SIZE, type_name,
& wind_typeid)
if (retval .ne. nf_noerr) call handle_err(retval)
retval = nf_insert_compound(ncid, wind_typeid, u_name, 0, NF_INT)
if (retval .ne. nf_noerr) call handle_err(retval)
retval = nf_insert_compound(ncid, wind_typeid, v_name, 4, NF_INT)
if (retval .ne. nf_noerr) call handle_err(retval)
C Check out my new type.
retval = nf_inq_typeids(ncid, ntypes, typeids)
if (retval .ne. nf_noerr) call handle_err(retval)
if (ntypes .ne. 1) stop 2
if (typeids(1) .ne. wind_typeid) stop 2
C Define the variable.
dimids(2) = x_dimid
dimids(1) = y_dimid
retval = nf_def_var(ncid, "data", NF_INT, NDIMS, dimids, varid)
if (retval .ne. nf_noerr) call handle_err(retval)
C Write the pretend data to the file.
retval = nf_put_var_int(ncid, varid, data_out)
if (retval .ne. nf_noerr) call handle_err(retval)
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 Find the type.
retval = nf_inq_typeids(ncid, ntypes, typeids)
if (retval .ne. nf_noerr) call handle_err(retval)
if (ntypes .ne. 1 .or. typeids(1) .ne. wind_typeid) stop 2
C Check the type.
retval = nf_inq_user_type(ncid, typeids(1), name_in, size_in,
& base_type_in, nfields_in, class_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(type_name)) .ne. type_name .or.
& size_in .ne. WIND_T_SIZE .or. nfields_in .ne. 2 .or.
& class_in .ne. NF_COMPOUND) stop 2
C Check it differently.
retval = nf_inq_compound(ncid, typeids(1), name_in, size_in,
& nfields_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(type_name)) .ne. type_name .or.
& size_in .ne. WIND_T_SIZE .or. nfields_in .ne. 2) stop 2
C Check it one piece at a time.
retval = nf_inq_compound_nfields(ncid, typeids(1), nfields_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (nfields_in .ne. 2) stop 2
retval = nf_inq_compound_size(ncid, typeids(1), size_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (size_in .ne. WIND_T_SIZE) stop 2
retval = nf_inq_compound_name(ncid, typeids(1), name_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(type_name)) .ne. type_name) stop 2
C Check the first field of the compound type.
retval = nf_inq_compound_field(ncid, typeids(1), 1, name_in,
& offset_in, field_typeid_in, ndims_in, dim_sizes_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(u_name)) .ne. u_name .or. offset_in .ne. 0 .or.
& field_typeid_in .ne. NF_INT .or. ndims_in .ne. 0) stop 2
retval = nf_inq_compound_fieldname(ncid, typeids(1), 1, name_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(u_name)) .ne. u_name) stop 2
retval = nf_inq_compound_fieldoffset(ncid, typeids(1), 1,
& offset_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (offset_in .ne. 0) stop 2
retval = nf_inq_compound_fieldtype(ncid, typeids(1), 1,
& field_typeid_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (field_typeid_in .ne. NF_INT) stop 2
retval = nf_inq_compound_fieldndims(ncid, typeids(1), 1,
& ndims_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (ndims_in .ne. 0) stop 2
C Check the second field of the compound type.
retval = nf_inq_compound_field(ncid, typeids(1), 2, name_in,
& offset_in, field_typeid_in, ndims_in, dim_sizes_in)
if (retval .ne. nf_noerr) call handle_err(retval)
if (name_in(1:len(v_name)) .ne. v_name .or. offset_in .ne. 4 .or.
& field_typeid_in .ne. NF_INT .or. ndims_in .ne. 0) stop 2
C Find our variable.
retval = nf_inq_varid(ncid, "data", varid)
if (retval .ne. nf_noerr) call handle_err(retval)
if (varid .ne. 1) stop 2
C Read the data and check it.
retval = nf_get_var_int(ncid, varid, data_in)
if (retval .ne. nf_noerr) call handle_err(retval)
do x = 1, NX
do y = 1, NY
if (data_in(y, x) .ne. data_out(y, x)) stop 2
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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