a323e8da85
Purpose:
[is this a bug fix? feature? ...]
Description:
[describe the bug, or describe the new feature, etc]
Solution:
[details about the changes, algorithm, etc...]
[Please as detail as you can since your own explanation is
better than others guessing it from the code.]
Platforms tested:
[machines you have tested the changed version. This is absolute
important. Test it out on at least two or three different platforms
such as Big-endian-32bit (SUN/IRIX), little-endian-32(LINUX) and
64-bit (IRIX64/UNICOS/DEC-ALPHA) would be good.]
88 lines
2.3 KiB
Fortran
88 lines
2.3 KiB
Fortran
! This example shows how to create and write a dataset attribute.
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! It opens the existing file 'dset.h5', obtains the identifier of
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! the dataset "/dset", defines attribute's dataspace,
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! creates dataset attribute, writes the attribute, and then closes
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! the attribute's dataspace, attribute, dataset, and file.
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PROGRAM ATTREXAMPLE
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USE HDF5 ! This module contains all necessary modules
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IMPLICIT NONE
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CHARACTER(LEN=8), PARAMETER :: filename = "dsetf.h5" ! File name
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CHARACTER(LEN=4), PARAMETER :: dsetname = "dset" ! Dataset name
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CHARACTER(LEN=4), PARAMETER :: aname = "attr" ! Attribute name
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INTEGER(HID_T) :: file_id ! File identifier
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INTEGER(HID_T) :: dset_id ! Dataset identifier
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INTEGER(HID_T) :: attr_id ! Attribute identifier
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INTEGER(HID_T) :: aspace_id ! Attribute Dataspace identifier
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INTEGER(HSIZE_T), DIMENSION(1) :: adims = (/2/) ! Attribute dimension
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INTEGER, DIMENSION(2) :: attr_data = (/100,200/)! Attribute data
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INTEGER :: arank = 1 ! Attribure rank
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INTEGER :: error ! Error flag
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!
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! Initialize FORTRAN predefined datatypes.
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!
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CALL h5open_f(error)
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!
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! Open an existing file.
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!
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CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
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!
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! Open an existing dataset.
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!
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CALL h5dopen_f(file_id, dsetname, dset_id, error)
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!
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! Create the data space for the attribute.
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!
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CALL h5screate_simple_f(arank, adims, aspace_id, error)
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!
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! Create dataset attribute.
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!
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CALL h5acreate_f(dset_id, aname, H5T_NATIVE_INTEGER,aspace_id, &
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attr_id, error)
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!
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! Write the attribute data.
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!
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CALL h5awrite_f(attr_id, H5T_NATIVE_INTEGER, attr_data, error)
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!
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! Close the attribute.
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!
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CALL h5aclose_f(attr_id, error)
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!
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! Terminate access to the data space.
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!
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CALL h5sclose_f(aspace_id, error)
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!
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! End access to the dataset and release resources used by it.
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!
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CALL h5dclose_f(dset_id, error)
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!
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! Close the file.
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!
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CALL h5fclose_f(file_id, error)
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!
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! Close FORTRAN predefined datatypes.
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!
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CALL h5close_f(error)
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END PROGRAM ATTREXAMPLE
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