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authorBill Wendling <wendling@ncsa.uiuc.edu>2000-09-19 20:06:49 (GMT)
committerBill Wendling <wendling@ncsa.uiuc.edu>2000-09-19 20:06:49 (GMT)
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[svn-r2576] Purpose:
Adding the Fortran interface to the HDF5 library Description: Fortran is now a subdirectory of the HDF5 library tree. Platforms tested: Solaris and IRIX (O2K)
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+! This example shows how to create and write a dataset attribute.
+! It opens the existing file 'dset.h5', obtains the identifier of
+! the dataset "/dset", defines attribute's dataspace,
+! creates dataset attribute, writes the attribute, and then closes
+! the attribute's dataspace, attribute, dataset, and file.
+
+ PROGRAM ATTREXAMPLE
+
+
+ USE HDF5 ! This module contains all necessary modules
+
+ IMPLICIT NONE
+
+ CHARACTER(LEN=8), PARAMETER :: filename = "dsetf.h5" ! File name
+ CHARACTER(LEN=4), PARAMETER :: dsetname = "dset" ! Dataset name
+ CHARACTER(LEN=9), PARAMETER :: aname = "attr_long" ! Attribute name
+
+ INTEGER(HID_T) :: file_id ! File identifier
+ INTEGER(HID_T) :: dset_id ! Dataset identifier
+ INTEGER(HID_T) :: attr_id ! Attribute identifier
+ INTEGER(HID_T) :: aspace_id ! Attribute Dataspace identifier
+ INTEGER(HID_T) :: atype_id ! Attribute Dataspace identifier
+ INTEGER(HSIZE_T), DIMENSION(1) :: adims = (/2/) ! Attribute dimension
+ INTEGER :: arank = 1 ! Attribure rank
+ INTEGER(SIZE_T) :: attrlen ! Length of the attribute string
+
+! CHARACTER*27, DIMENSION(2) :: attr_data ! Attribute data
+ CHARACTER*80, DIMENSION(2) :: attr_data ! Attribute data
+
+ INTEGER :: error ! Error flag
+
+
+ !
+ ! Initialize attribute's data
+ !
+ attr_data(1) = "Dataset character attribute"
+ attr_data(2) = "Some other string here "
+! attrlen = 27
+ attrlen = 80
+ !
+ ! Initialize FORTRAN predefined datatypes.
+ !
+ CALL h5init_types_f(error)
+
+ !
+ ! Open an existing file.
+ !
+ CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
+
+ !
+ ! Open an existing dataset.
+ !
+ CALL h5dopen_f(file_id, dsetname, dset_id, error)
+
+ !
+ ! Create scalar data space for the attribute.
+ !
+ CALL h5screate_simple_f(arank, adims, aspace_id, error)
+ !
+ ! Create datatype for the attribute.
+ !
+ CALL h5tcopy_f(H5T_NATIVE_CHARACTER, atype_id, error)
+ CALL h5tset_size_f(atype_id, attrlen, error)
+
+ !
+ ! Create dataset attribute.
+ !
+ CALL h5acreate_f(dset_id, aname, atype_id, aspace_id, &
+ attr_id, error)
+
+ !
+ ! Write the attribute data.
+ !
+ CALL h5awrite_f(attr_id, atype_id, attr_data, error)
+
+ !
+ ! Close the attribute.
+ !
+ CALL h5aclose_f(attr_id, error)
+
+ !
+ ! Terminate access to the data space.
+ !
+ CALL h5sclose_f(aspace_id, error)
+
+ !
+ ! End access to the dataset and release resources used by it.
+ !
+ CALL h5dclose_f(dset_id, error)
+
+ !
+ ! Close the file.
+ !
+ CALL h5fclose_f(file_id, error)
+
+ !
+ ! Close FORTRAN predefined datatypes.
+ !
+ CALL h5close_types_f(error)
+
+ END PROGRAM ATTREXAMPLE
+