mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-03 02:32:04 +08:00
0fb88ded47
Add version # and flags to external link format (as fields in a single byte), in order to accomodate future changes/expansions. Tested on: Mac OS X/32 10.4.9 (amazon) Linux/32 2.6 (chicago) Linux/64 2.6 (chicago2) FreeBSD/32 6.2 (duty) FreeBSD/64 6.2 (liberty)
164 lines
5.6 KiB
C
164 lines
5.6 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
* 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_fields_name
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#define NFIELDS (hsize_t) 5
|
|
#define NRECORDS (hsize_t) 8
|
|
#define NRECORDS_ADD (hsize_t) 3
|
|
#define TABLE_NAME "table"
|
|
|
|
int main( void )
|
|
{
|
|
typedef struct Particle
|
|
{
|
|
char name[16];
|
|
int lati;
|
|
int longi;
|
|
float pressure;
|
|
double temperature;
|
|
} Particle;
|
|
|
|
/* Define a subset of Particle, with latitude and longitude fields */
|
|
typedef struct Position
|
|
{
|
|
int lati;
|
|
int longi;
|
|
} Position;
|
|
|
|
/* Define a subset of Particle, with name and pressure fields */
|
|
typedef struct NamePressure
|
|
{
|
|
char name[16];
|
|
float pressure;
|
|
} NamePressure;
|
|
|
|
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 )};
|
|
size_t dst_sizes[NFIELDS] = { sizeof( dst_buf[0].name),
|
|
sizeof( dst_buf[0].lati),
|
|
sizeof( dst_buf[0].longi),
|
|
sizeof( dst_buf[0].pressure),
|
|
sizeof( dst_buf[0].temperature)};
|
|
size_t field_offset_pos[2] = { HOFFSET( Position, lati ),
|
|
HOFFSET( Position, longi )};
|
|
const char *field_names[NFIELDS] = /* Define field information */
|
|
{ "Name","Latitude", "Longitude", "Pressure", "Temperature" };
|
|
hid_t field_type[NFIELDS];
|
|
hid_t string_type;
|
|
hid_t file_id;
|
|
hsize_t chunk_size = 10;
|
|
Particle fill_data[1] =
|
|
{ {"no data",-1,-1, -99.0f, -99.0} }; /* Fill value particle */
|
|
hsize_t start; /* Record to start reading/writing */
|
|
hsize_t nrecords; /* Number of records to read/write */
|
|
int compress = 0;
|
|
herr_t status;
|
|
int i;
|
|
Particle *p_data = NULL; /* Initially no data */
|
|
float pressure_in [NRECORDS_ADD] = /* Define new values for the field "Pressure" */
|
|
{ 0.0f,1.0f,2.0f};
|
|
Position position_in[NRECORDS_ADD] = {/* Define new values for "Latitude,Longitude" */
|
|
{0,0},
|
|
{10,10},
|
|
{20,20}};
|
|
NamePressure namepre_in[NRECORDS_ADD] =/* Define new values for "Name,Pressure" */
|
|
{ {"zero",0.0f},
|
|
{"one", 1.0f},
|
|
{"two", 2.0f},
|
|
};
|
|
size_t field_sizes_pos[2]=
|
|
{
|
|
sizeof(position_in[0].longi),
|
|
sizeof(position_in[0].lati)
|
|
};
|
|
size_t field_sizes_pre[1]=
|
|
{
|
|
sizeof(namepre_in[0].pressure)
|
|
};
|
|
|
|
/* 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_04.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, compress, p_data );
|
|
|
|
/* Write the pressure field starting at record 2 */
|
|
start = 2;
|
|
nrecords = NRECORDS_ADD;
|
|
status=H5TBwrite_fields_name( file_id, TABLE_NAME, "Pressure", start, nrecords,
|
|
sizeof( float ), 0, field_sizes_pre, pressure_in );
|
|
|
|
/* Write the new longitude and latitude information starting at record 2 */
|
|
start = 2;
|
|
nrecords = NRECORDS_ADD;
|
|
status=H5TBwrite_fields_name( file_id, TABLE_NAME, "Latitude,Longitude", start, nrecords,
|
|
sizeof( Position ), field_offset_pos, field_sizes_pos, position_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");
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------
|
|
* end
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
/* Close the file. */
|
|
H5Fclose( file_id );
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|