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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "hdf5.h"
#include "hdf5_hl.h"
#include <stdlib.h>
/*-------------------------------------------------------------------------
* Table API example
*
* H5TBwrite_records
*
*-------------------------------------------------------------------------
*/
#define NFIELDS (hsize_t) 5
#define NRECORDS (hsize_t) 8
#define NRECORDS_WRITE (hsize_t) 2
#define TABLE_NAME "table"
int main( void )
{
typedef struct Particle
{
char name[16];
int lati;
int longi;
float pressure;
double temperature;
} Particle;
Particle dst_buf[NRECORDS];
/* Calculate the size and the offsets of our struct members in memory */
size_t dst_size = sizeof( Particle );
size_t dst_offset[NFIELDS] = { HOFFSET( Particle, name ),
HOFFSET( Particle, lati ),
HOFFSET( Particle, longi ),
HOFFSET( Particle, pressure ),
HOFFSET( Particle, temperature )};
Particle p = {"zero",0,0, 0.0f, 0.0};
size_t dst_sizes[NFIELDS] = { sizeof( p.name),
sizeof( p.lati),
sizeof( p.longi),
sizeof( p.pressure),
sizeof( p.temperature)};
/* Define field information */
const char *field_names[NFIELDS] =
{ "Name","Latitude", "Longitude", "Pressure", "Temperature" };
/* Fill value particle */
Particle fill_data[1] =
{ {"no data",-1,-1, -99.0f, -99.0} };
hid_t field_type[NFIELDS];
hid_t string_type;
hid_t file_id;
hsize_t chunk_size = 10;
hsize_t start; /* Record to start reading/writing */
hsize_t nrecords; /* Number of records to read/write */
herr_t status;
int i;
/* Define 2 new particles to write */
Particle particle_in[NRECORDS_WRITE] =
{ {"zero",0,0, 0.0f, 0.0},
{"one",10,10, 1.0f, 10.0} };
/* Initialize the field field_type */
string_type = H5Tcopy( H5T_C_S1 );
H5Tset_size( string_type, 16 );
field_type[0] = string_type;
field_type[1] = H5T_NATIVE_INT;
field_type[2] = H5T_NATIVE_INT;
field_type[3] = H5T_NATIVE_FLOAT;
field_type[4] = H5T_NATIVE_DOUBLE;
/* Create a new file using default properties. */
file_id = H5Fcreate( "ex_table_03.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );
/* Make the table */
status=H5TBmake_table( "Table Title",
file_id,
TABLE_NAME,
NFIELDS,
NRECORDS,
dst_size,
field_names,
dst_offset,
field_type,
chunk_size,
fill_data,
0, /* no compression */
NULL ); /* no data written */
/* Overwrite 2 records starting at record 0 */
start = 0;
nrecords = NRECORDS_WRITE;
status=H5TBwrite_records( file_id, TABLE_NAME, start, nrecords, dst_size, dst_offset,
dst_sizes, particle_in);
/* read the table */
status=H5TBread_table( file_id, TABLE_NAME, dst_size, dst_offset, dst_sizes, dst_buf );
/* print it by rows */
for (i=0; i<NRECORDS; i++) {
printf ("%-5s %-5d %-5d %-5f %-5f",
dst_buf[i].name,
dst_buf[i].lati,
dst_buf[i].longi,
dst_buf[i].pressure,
dst_buf[i].temperature);
printf ("\n");
}
/* close type */
H5Tclose( string_type );
/* close the file */
H5Fclose( file_id );
return 0;
}
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