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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "hdf5_hl.h"
#include <stdlib.h>
/*-------------------------------------------------------------------------
* Table API example
*
* H5TBcombine_tables
*
*-------------------------------------------------------------------------
*/
#define NFIELDS (hsize_t)5
#define NRECORDS (hsize_t)8
#define TABLE1_NAME "table1"
#define TABLE2_NAME "table2"
#define TABLE3_NAME "table3"
int
main(void)
{
typedef struct Particle {
char name[16];
int lati;
int longi;
float pressure;
double temperature;
} Particle;
/* 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}};
Particle dst_buf[2 * 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)};
/* 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 compress = 0;
int * fill_data = NULL;
hsize_t nfields_out;
hsize_t nrecords_out;
int i;
/* 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_10.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
/* Make two tables */
H5TBmake_table("Table Title", file_id, TABLE1_NAME, NFIELDS, NRECORDS, dst_size, field_names, dst_offset,
field_type, chunk_size, fill_data, compress, p_data);
H5TBmake_table("Table Title", file_id, TABLE2_NAME, NFIELDS, NRECORDS, dst_size, field_names, dst_offset,
field_type, chunk_size, fill_data, compress, p_data);
/* Combine the two tables into a third in the same file */
H5TBcombine_tables(file_id, TABLE1_NAME, file_id, TABLE2_NAME, TABLE3_NAME);
/* read the combined table */
H5TBread_table(file_id, TABLE3_NAME, dst_size, dst_offset, dst_sizes, dst_buf);
/* Get table info */
H5TBget_table_info(file_id, TABLE3_NAME, &nfields_out, &nrecords_out);
/* print */
printf("Table has %d fields and %d records\n", (int)nfields_out, (int)nrecords_out);
/* print it by rows */
for (i = 0; i < nrecords_out; 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;
}
|
