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Diffstat (limited to 'HDF5Examples/FORTRAN/H5T/h5ex_t_arrayatt_F03.F90')
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diff --git a/HDF5Examples/FORTRAN/H5T/h5ex_t_arrayatt_F03.F90 b/HDF5Examples/FORTRAN/H5T/h5ex_t_arrayatt_F03.F90 new file mode 100644 index 0000000..c938449 --- /dev/null +++ b/HDF5Examples/FORTRAN/H5T/h5ex_t_arrayatt_F03.F90 @@ -0,0 +1,135 @@ +!************************************************************ +! +! This example shows how to read and write array datatypes +! to an attribute. The program first writes integers arrays +! of dimension ADIM0xADIM1 to an attribute with a dataspace +! of DIM0, then closes the file. Next, it reopens the +! file, reads back the data, and outputs it to the screen. +! +! This file is intended for use with HDF5 Library version 1.8 +! with --enable-fortran2003 +! +!************************************************************ +PROGRAM main + + USE HDF5 + USE ISO_C_BINDING + + IMPLICIT NONE + + CHARACTER(LEN=22), PARAMETER :: filename = "h5ex_t_arrayatt_F03.h5" + CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" + CHARACTER(LEN=2) , PARAMETER :: attribute = "A1" + INTEGER , PARAMETER :: dim0 = 4 + INTEGER , PARAMETER :: adim0 = 3 + INTEGER , PARAMETER :: adim1 = 5 + INTEGER(HID_T) :: file, filetype, memtype, space, dset, attr ! Handles + INTEGER :: hdferr + INTEGER(HSIZE_T), DIMENSION(1:1) :: dims = (/dim0/) + INTEGER(HSIZE_T), DIMENSION(1:2) :: adims = (/adim0, adim1/) + INTEGER(HSIZE_T), DIMENSION(1:2) :: maxdims + INTEGER, DIMENSION(1:dim0, 1:adim0, 1:adim1), TARGET :: wdata ! Write buffer + INTEGER, DIMENSION(:,:,:), ALLOCATABLE, TARGET :: rdata ! Read buffer + INTEGER :: i, j, k + TYPE(C_PTR) :: f_ptr + ! + ! Initialize FORTRAN interface. + ! + CALL h5open_f(hdferr) + ! + ! Initialize data. i is the element in the dataspace, j and k the + ! elements within the array datatype. + ! + DO i = 1, dim0 + DO j = 1, adim0 + DO k = 1, adim1 + wdata(i,j,k) = (i-1)*(j-1)-(j-1)*(k-1)+(i-1)*(k-1) + ENDDO + ENDDO + ENDDO + ! + ! Create a new file using the default properties. + ! + CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr) + ! + ! Create array datatypes for file and memory. + ! + CALL H5Tarray_create_f(INT(H5T_STD_I64LE, HID_T), 2, adims, filetype, hdferr) + CALL H5Tarray_create_f(H5T_NATIVE_INTEGER, 2, adims, memtype, hdferr) + ! + ! Create dataset with a null dataspace. + ! + CALL H5Screate_f(H5S_NULL_F, space, hdferr) + CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr) + CALL H5Sclose_f(space, hdferr) + ! + ! Create dataspace. Setting maximum size to be the current size. + ! + CALL h5screate_simple_f(1, dims, space, hdferr) + ! + ! Create the attribute and write the array data to it. + ! + CALL H5Acreate_f(dset, attribute, filetype, space, attr, hdferr) + f_ptr = C_LOC(wdata) + CALL H5Awrite_f(attr, memtype, f_ptr, hdferr) + ! + ! Close and release resources. + ! + CALL H5Aclose_f(attr, hdferr) + CALL H5Dclose_f(dset, hdferr) + CALL H5Sclose_f(space, hdferr) + CALL H5Tclose_f(filetype, hdferr) + CALL H5Tclose_f(memtype, hdferr) + CALL H5Fclose_f(file, hdferr) + ! + ! Now we begin the read section of this example. + ! + ! Open file, dataset, and attribute. + ! + CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr) + CALL h5dopen_f(file, dataset, dset, hdferr) + CALL h5aopen_f(dset, attribute, attr, hdferr) + ! + ! Get the datatype and its dimensions. + ! + CALL H5Aget_type_f(attr, filetype, hdferr) + CALL H5Tget_array_dims_f(filetype, adims, hdferr) + ! + ! Get dataspace and allocate memory for read buffer. This is a + ! three dimensional attribute when the array datatype is included. + ! + CALL H5Aget_space_f(attr, space, hdferr) + CALL H5Sget_simple_extent_dims_f(space, dims, maxdims, hdferr) + ALLOCATE(rdata(1:dims(1),1:adims(1),1:adims(2))) + ! + ! Create the memory datatype. + ! + CALL H5Tarray_create_f(H5T_NATIVE_INTEGER, 2, adims, memtype, hdferr) + ! + ! Read the data. + ! + f_ptr = C_LOC(rdata) + CALL H5Aread_f(attr, memtype, f_ptr, hdferr) + ! + ! Output the data to the screen. + ! + DO i = 1, dims(1) + WRITE(*,'(A,"[",i1,"]:")') attribute,i-1 + DO j=1, adim0 + WRITE(*,'(" [")', ADVANCE='NO') + WRITE(*,'(80i3)', ADVANCE='NO') rdata(i,j,:) + WRITE(*,'(" ]")') + ENDDO + ENDDO + ! + ! Close and release resources. + ! + DEALLOCATE(rdata) + CALL H5Aclose_f(attr, hdferr) + CALL H5Dclose_f(dset, hdferr) + CALL H5Sclose_f(space, hdferr) + CALL H5Tclose_f(filetype, hdferr) + CALL H5Tclose_f(memtype, hdferr) + CALL H5Fclose_f(file, hdferr) + +END PROGRAM main |