1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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
*
* H5TBappend_records
*
*-------------------------------------------------------------------------
*/
#define NFIELDS (hsize_t) 5
#define NRECORDS (hsize_t) 8
#define NRECORDS_ADD (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+NRECORDS_ADD];
/* Define an array of Particles */
Particle p_data[NRECORDS] = {
{"zero",0,0, 0.0f, 0.0},
{"one",10,10, 1.0f, 10.0},
{"two", 20,20, 2.0f, 20.0},
{"three",30,30, 3.0f, 30.0},
{"four", 40,40, 4.0f, 40.0},
{"five", 50,50, 5.0f, 50.0},
{"six", 60,60, 6.0f, 60.0},
{"seven",70,70, 7.0f, 70.0}
};
/* 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( p_data[0].name),
sizeof( p_data[0].lati),
sizeof( p_data[0].longi),
sizeof( p_data[0].pressure),
sizeof( p_data[0].temperature)};
/* Define field information */
const char *field_names[NFIELDS] =
{ "Name","Latitude", "Longitude", "Pressure", "Temperature" };
hid_t field_type[NFIELDS];
hid_t string_type;
hid_t file_id;
hsize_t chunk_size = 10;
int *fill_data = NULL;
int compress = 0;
herr_t status;
int i;
/* Append particles */
Particle particle_in[ NRECORDS_ADD ] =
{{ "eight",80,80, 8.0f, 80.0},
{"nine",90,90, 9.0f, 90.0} };
/* 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_02.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );
/* make a 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 );
/* append two records */
status=H5TBappend_records(file_id, TABLE_NAME,NRECORDS_ADD, 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+NRECORDS_ADD; 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;
}
|
