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authorBarbara Jones <bljones@hdfgroup.org>2001-03-08 16:31:09 (GMT)
committerBarbara Jones <bljones@hdfgroup.org>2001-03-08 16:31:09 (GMT)
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[svn-r3561] add to tutorial
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.]
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+!
+! The following example shows how to write and read to/from an existing dataset.
+! It opens the file created in the previous example, obtains the dataset
+! identifier, writes the data to the dataset in the file,
+! then reads the dataset to memory.
+!
+
+
+ PROGRAM RWDSETEXAMPLE
+
+ 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
+
+ INTEGER(HID_T) :: file_id ! File identifier
+ INTEGER(HID_T) :: dset_id ! Dataset identifier
+
+ INTEGER :: error ! Error flag
+ INTEGER :: i, j
+
+ INTEGER, DIMENSION(4,6) :: dset_data, data_out ! Data buffers
+
+ !
+ ! Initialize the dset_data array.
+ !
+ do i = 1, 4
+ do j = 1, 6
+ dset_data(i,j) = (i-1)*6 + j;
+ end do
+ end do
+
+ !
+ ! Initialize FORTRAN predefined datatypes
+ !
+ CALL h5open_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)
+
+ !
+ ! Write the dataset.
+ !
+ CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, dset_data, error)
+
+ !
+ ! Read the dataset.
+ !
+ CALL h5dread_f(dset_id, H5T_NATIVE_INTEGER, data_out, error)
+
+ !
+ ! Close the dataset.
+ !
+ CALL h5dclose_f(dset_id, error)
+
+ !
+ ! Close the file.
+ !
+ CALL h5fclose_f(file_id, error)
+
+ !
+ ! Close FORTRAN predefined datatypes.
+ !
+ CALL h5close_f(error)
+
+ END PROGRAM RWDSETEXAMPLE
+
+
+