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Diffstat (limited to 'HDF5Examples/FORTRAN/H5D/h5ex_d_compact.F90')
-rw-r--r-- | HDF5Examples/FORTRAN/H5D/h5ex_d_compact.F90 | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/HDF5Examples/FORTRAN/H5D/h5ex_d_compact.F90 b/HDF5Examples/FORTRAN/H5D/h5ex_d_compact.F90 new file mode 100644 index 0000000..c2e5aaf --- /dev/null +++ b/HDF5Examples/FORTRAN/H5D/h5ex_d_compact.F90 @@ -0,0 +1,128 @@ +! ************************************************************ +! +! This example shows how to read and write data to a compact +! dataset. The program first writes integers to a compact +! dataset with dataspace dimensions 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 +! +! ************************************************************ + +! An optional example for determining the correct HDF5 version +! for picking the correct HDF5 API parameters. This is not +! part of the HDF5 library. +#include "h5_version.h" + +PROGRAM main + + USE HDF5 + + IMPLICIT NONE + + CHARACTER(LEN=17), PARAMETER :: filename = "h5ex_d_compact.h5" + CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" + INTEGER , PARAMETER :: dim0 = 4 + INTEGER , PARAMETER :: dim1 = 7 + + INTEGER :: hdferr + INTEGER :: layout + INTEGER(HID_T) :: file, space, dset, dcpl ! Handles + INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/) + + INTEGER, DIMENSION(1:dim0, 1:dim1) :: wdata, & ! Write buffer + rdata ! Read buffer + INTEGER :: i, j + ! + ! Initialize FORTRAN interface. + ! + CALL h5open_f(hdferr) + ! + ! Initialize data. + ! + DO i = 1, dim0 + DO j = 1, dim1 + wdata(i,j) = (i-1)*(j-1)-(j-1) + ENDDO + ENDDO + ! + ! Create a new file using the default properties. + ! + CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr) + ! + ! Create dataspace. Setting maximum size to NULL sets the maximum + ! size to be the current size. + ! + CALL h5screate_simple_f(2, dims, space, hdferr) + ! + ! Create the dataset creation property list, set the layout to + ! compact. + ! + CALL h5pcreate_f(H5P_DATASET_CREATE_F, dcpl, hdferr) + CALL h5pset_layout_f(dcpl, H5D_COMPACT_F, hdferr) + ! + ! Create the dataset. We will use all default properties for this + ! example. + ! + CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr, dcpl) + ! + ! Write the data to the dataset. + ! + CALL h5dwrite_f(dset, H5T_NATIVE_INTEGER, wdata, dims, hdferr) + ! + ! Close and release resources. + ! + CALL h5pclose_f(dcpl , hdferr) + CALL h5dclose_f(dset , hdferr) + CALL h5sclose_f(space, hdferr) + CALL h5fclose_f(file , hdferr) + ! + ! Now we begin the READ section of this example. + ! + ! + ! Open file and dataset using the default properties. + ! + CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr) + CALL h5dopen_f (file, dataset, dset, hdferr) + ! + ! Retrieve the dataset creation property list, and print the + ! storage layout. + ! + CALL h5dget_create_plist_f(dset, dcpl, hdferr) + CALL h5pget_layout_f(dcpl, layout, hdferr) + WRITE(*,'(/,"Storage layout for ", A," is: ")', ADVANCE='NO') dataset + IF(layout.EQ.H5D_COMPACT_F)THEN + WRITE(*,'("H5D_COMPACT_F",/)') + ELSE IF (layout.EQ.H5D_CONTIGUOUS_F)THEN + WRITE(*,'("H5D_CONTIGUOUS_F",/)') + ELSE IF (layout.EQ.H5D_CHUNKED_F)THEN + WRITE(*,'("H5D_CHUNKED_F",/)') +#if H5_VERSION_GE(1,12,0) + ELSE IF (layout.EQ.H5D_VIRTUAL_F)THEN + WRITE(*,'("H5D_VIRTUAL_F",/)') +#endif + ELSE + WRITE(*,'("Layout Error",/)') + ENDIF + ! + ! Read the data using the default properties. + ! + CALL h5dread_f(dset, H5T_NATIVE_INTEGER, rdata, dims, hdferr) + ! + ! Output the data to the screen. + ! + WRITE(*, '(A,":")') dataset + DO i=1, dim0 + WRITE(*,'(" [")', ADVANCE='NO') + WRITE(*,'(80i3)', ADVANCE='NO') rdata(i,:) + WRITE(*,'(" ]")') + ENDDO + ! + ! Close and release resources. + ! + CALL h5pclose_f(dcpl , hdferr) + CALL h5dclose_f(dset , hdferr) + CALL h5fclose_f(file , hdferr) + +END PROGRAM main |