[svn-r17064] This examples creates a file and writes a two dimensional real dataset

    to it.

    It then reopens the file, and copies a region described by blocks
    to another region described by another block.
    Main illustrative function: H5LTcopy_region

1 files changed, 118 insertions, 0 deletions

diff --git a/hl/examples/ex_lite_copy_region.c b/hl/examples/ex_lite_copy_region.c
new file mode 100644
index 0000000..7741ebe
--- /dev/null
+++ b/hl/examples/ex_lite_copy_region.c
@@ -0,0 +1,118 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*
+    This examples creates a file and writes a two dimensional real dataset
+    to it.
+
+    It then reopens the file, and copies a region described by blocks 
+    to another region described by another block.
+    Main illustrative function: H5LTcopy_region 
+
+*/
+
+#include "hdf5.h"
+#include "hdf5_hl.h"
+
+#define filename "File.h5"
+#define DSETNAME "DS"     /* dataset name */
+
+#define DIM0  6   /* dataset dimensions */
+#define DIM1  7
+
+#define rank  2  /* dataset rank */
+
+
+int main(void)
+{
+    hid_t file_id;         /* file identifier */
+    hsize_t dims[rank] =  {DIM0, DIM1}; /* dataset dimension */
+    herr_t status;
+    int data[DIM0][DIM1]; /* data */
+    int i, j;
+    hsize_t block_coord_src[4] ={ 0, 0, 1, 2}; /* hyperslab coordinates to copy from */
+    hsize_t block_coord_dest[4] ={2, 3, 3, 5 }; /* destinations block coordinates to copy data to */
+    int rdata[DIM0][DIM1]; /* read data buffer */
+    
+
+/*********************************************************  
+   This writes data to the HDF5 file.  
+ *********************************************************/ 
+ 
+    /* 
+     * Data  and output buffer initialization. 
+     */
+    printf("FULL 2D ARRAY:");
+    for (i=0; i<DIM0; i++) {
+      printf("\n[ ");
+      for (j=0; j<DIM1; j++) {
+	data[i][j] =  10*i+j;
+	printf("%02d ", data[i][j]);
+      }
+      printf("]");
+    }
+    printf("\n");
+
+    /*
+     * Create file with default file access and file creation properties.
+     */
+    file_id = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /*
+     * Create and write the dataset.
+     */
+    status = H5LTmake_dataset ( file_id, DSETNAME, 2, dims, H5T_NATIVE_INT, data);
+
+    /*
+     * Close/release resources.
+     */
+    status = H5Fclose(file_id);
+
+/*************************************************************  
+
+  This copies a region described by blocks to another region 
+  described by another block
+
+ ************************************************************/  
+    status = H5LTcopy_region(filename,
+ 			     "/DS",
+ 	                     block_coord_src,
+ 			     filename,
+  			     "/DS",
+  			     block_coord_dest);
+
+    /* Read and print the destination region */
+    file_id = H5Fopen(filename, H5F_ACC_RDWR,  H5P_DEFAULT);
+    status = H5LTread_dataset(file_id,"/DS",H5T_NATIVE_INT,rdata);
+    status = H5Fclose(file_id);
+
+    printf("2D DATA AFTER H5LTCOPY_REGION: [(%d,%d)-(%d,%d)] --> [(%d,%d)-(%d,%d)]",
+	   (int)block_coord_src[0],(int)block_coord_src[1], (int)block_coord_src[2],(int)block_coord_src[3],
+	   (int)block_coord_dest[0], (int)block_coord_dest[1],(int)block_coord_dest[2], (int)block_coord_dest[3]);
+
+    for (i=0; i< DIM0; i++)
+      {
+	printf("\n  [ ");
+	for (j=0; j< DIM1; j++) {
+	  printf("%02d ", rdata[i][j]);
+	}
+	printf("]");
+      }
+    printf("\n");
+
+    return 0;
+}
+
+
+