vchoi_fork

/************************************************************

​

  This example illustrates the concept of virtual dataset I/O

  The program  creates 2-dim source dataset and writes

  data to it. Then it creates 2-dim virtual dataset that has

  the same dimension sizes and maps the all elements of the 

  virtual dataset to all elements of the source dataset.

  Then VDS is read back.

​

  This file is intended for use with HDF5 Library version 1.10

​

 ************************************************************/

/* EIP Add link to the picture */

​

#include "hdf5.h"

#include <stdio.h>

#include <stdlib.h>

​

#define FILE         "vds-simpleIO.h5"

#define DATASET      "VDS"

#define DIM1            6

#define DIM0            4 

#define RANK            2

​

#define SRC_FILE      "a.h5"

#define SRC_DATASET    "/A"

​

​

int

main (void)

{

    hid_t        file, space, src_space, vspace, dset; /* Handles */ 

    hid_t        dcpl;

    herr_t       status;

    hsize_t      vdsdims[2] = {DIM0, DIM1},     /* Virtual dataset dimension */

                 dims[2] = {DIM0, DIM1};        /* Source dataset dimensions */

    int          wdata[DIM0][DIM1],             /* Write buffer for source dataset */

                 rdata[DIM0][DIM1],             /* Read buffer for virtual dataset */

                 i, j;  

    H5D_layout_t layout;                        /* Storage layout */

    size_t       num_map;                       /* Number of mappings */

    ssize_t      len;                           /* Length of the string; also a return value */

    char         *filename;                  

    char         *dsetname;

    /*

     * Initialize data.

     */

        for (i = 0; i < DIM0; i++) 

            for (j = 0; j < DIM1; j++) wdata[i][j] = i+1;

     /*