!************************************************************ ! ! This example shows how to read and write enumerated ! datatypes to a dataset. The program first writes ! enumerated values to a dataset with a dataspace of ! DIM0xDIM1, 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=19), PARAMETER :: filename = "h5ex_t_enum_F03.h5" CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" INTEGER , PARAMETER :: dim0 = 4 INTEGER , PARAMETER :: dim1 = 7 INTEGER(HID_T) :: F_BASET ! File base type INTEGER(HID_T) :: M_BASET ! Memory base type INTEGER(SIZE_T) , PARAMETER :: NAME_BUF_SIZE = 16 ! Enumerated type ENUM, BIND(C) ENUMERATOR :: SOLID = 0, LIQUID, GAS, PLASMA END ENUM INTEGER(HID_T) :: file, filetype, memtype, space, dset ! Handles INTEGER :: hdferr INTEGER(hsize_t), DIMENSION(1:2) :: dims = (/dim0, dim1/) INTEGER(kind(SOLID)), DIMENSION(1:dim0, 1:dim1), TARGET :: wdata ! Write buffer INTEGER(kind(SOLID)), DIMENSION(:,:), ALLOCATABLE, TARGET :: rdata ! Read buffer INTEGER(kind(SOLID)), TARGET :: val CHARACTER(LEN=6), DIMENSION(1:4) :: & names = (/"SOLID ", "LIQUID", "GAS ", "PLASMA"/) CHARACTER(LEN=NAME_BUF_SIZE) :: name INTEGER(HSIZE_T), DIMENSION(1:2) :: maxdims INTEGER(kind(SOLID)) :: i, j TYPE(C_PTR) :: f_ptr ! ! Initialize FORTRAN interface. ! CALL h5open_f(hdferr) ! ! Initialize DATA. ! F_BASET = H5T_STD_I16BE ! File base type M_BASET = h5kind_to_type(kind(SOLID), H5_INTEGER_KIND) ! Memory base type DO i = 1, dim0 DO j = 1, dim1 wdata(i,j) = MOD( (j-1)*(i-1), PLASMA+1) ENDDO ENDDO ! ! Create a new file using the default properties. ! CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr) ! ! Create the enumerated datatypes for file and memory. This ! process is simplified IF native types are used for the file, ! as only one type must be defined. ! CALL h5tenum_create_f (F_BASET, filetype, hdferr) CALL h5tenum_create_f (M_BASET, memtype, hdferr) DO i = SOLID, PLASMA ! ! Insert enumerated value for memtype. ! val = i CALL h5tenum_insert_f(memtype, TRIM(names(i+1)), val, hdferr) ! ! Insert enumerated value for filetype. We must first convert ! the numerical value val to the base type of the destination. ! f_ptr = C_LOC(val) CALL h5tconvert_f (M_BASET, F_BASET, INT(1,SIZE_T), f_ptr, hdferr) CALL h5tenum_insert_f(filetype, TRIM(names(i+1)), val, hdferr) ENDDO ! ! Create dataspace. Setting maximum size to be the current size. ! CALL h5screate_simple_f(2, dims, space, hdferr) ! ! Create the dataset and write the enumerated data to it. ! CALL h5dcreate_f(file, dataset, filetype, space, dset, hdferr) f_ptr = C_LOC(wdata(1,1)) CALL h5dwrite_f(dset, memtype, f_ptr, hdferr) ! ! Close and release resources. ! CALL h5dclose_f(dset , hdferr) CALL h5sclose_f(space, hdferr) CALL h5tclose_f(filetype, hdferr) CALL h5fclose_f(file , hdferr) ! ! Now we begin the read section of this example. ! ! Open file and dataset. ! CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr) CALL h5dopen_f (file, dataset, dset, hdferr) ! ! Get dataspace and allocate memory for read buffer. ! CALL h5dget_space_f(dset,space, hdferr) CALL h5sget_simple_extent_dims_f (space, dims, maxdims, hdferr) ALLOCATE(rdata(1:dims(1),1:dims(2))) ! ! Read the data. ! f_ptr = C_LOC(rdata(1,1)) CALL h5dread_f(dset, memtype, f_ptr, hdferr) ! ! Output the data to the screen. ! WRITE(*, '(A,":")') dataset DO i=1, dims(1) WRITE(*,'(" [")', ADVANCE='NO') DO j = 1, dims(2) ! ! Get the name of the enumeration member. ! CALL h5tenum_nameof_f( memtype, rdata(i,j), NAME_BUF_SIZE, name, hdferr) WRITE(*,'(" ", A6," ")', ADVANCE='NO') TRIM(NAME) ENDDO WRITE(*,'("]")') ENDDO ! ! Close and release resources. ! DEALLOCATE(rdata) CALL h5dclose_f(dset , hdferr) CALL h5sclose_f(space, hdferr) CALL h5tclose_f(memtype, hdferr) CALL h5fclose_f(file , hdferr) END PROGRAM main