1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
2 * Copyright by The HDF Group. *
3 * Copyright by the Board of Trustees of the University of Illinois. *
4 * All rights reserved. *
5 * *
6 * This file is part of HDF5. The full HDF5 copyright notice, including *
7 * terms governing use, modification, and redistribution, is contained in *
8 * the COPYING file, which can be found at the root of the source code *
9 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
10 * If you do not have access to either file, you may request a copy from *
11 * help@hdfgroup.org. *
12 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
13
14 #include "hdf5_hl.h"
15 #include <stdlib.h>
16
17 /*-------------------------------------------------------------------------
18 * Table API example
19 *
20 * H5TBcombine_tables
21 *
22 *-------------------------------------------------------------------------
23 */
24
25 #define NFIELDS (hsize_t) 5
26 #define NRECORDS (hsize_t) 8
27 #define TABLE1_NAME "table1"
28 #define TABLE2_NAME "table2"
29 #define TABLE3_NAME "table3"
30
main(void)31 int main( void )
32 {
33 typedef struct Particle
34 {
35 char name[16];
36 int lati;
37 int longi;
38 float pressure;
39 double temperature;
40 } Particle;
41
42 /* Define an array of Particles */
43 Particle p_data[NRECORDS] = {
44 {"zero",0,0, 0.0f, 0.0},
45 {"one",10,10, 1.0f, 10.0},
46 {"two", 20,20, 2.0f, 20.0},
47 {"three",30,30, 3.0f, 30.0},
48 {"four", 40,40, 4.0f, 40.0},
49 {"five", 50,50, 5.0f, 50.0},
50 {"six", 60,60, 6.0f, 60.0},
51 {"seven",70,70, 7.0f, 70.0}
52 };
53
54 Particle dst_buf[ 2 * NRECORDS ];
55 /* Calculate the size and the offsets of our struct members in memory */
56 size_t dst_size = sizeof( Particle );
57 size_t dst_offset[NFIELDS] = { HOFFSET( Particle, name ),
58 HOFFSET( Particle, lati ),
59 HOFFSET( Particle, longi ),
60 HOFFSET( Particle, pressure ),
61 HOFFSET( Particle, temperature )};
62 size_t dst_sizes[NFIELDS] = { sizeof( dst_buf[0].name),
63 sizeof( dst_buf[0].lati),
64 sizeof( dst_buf[0].longi),
65 sizeof( dst_buf[0].pressure),
66 sizeof( dst_buf[0].temperature)};
67
68
69 /* Define field information */
70 const char *field_names[NFIELDS] =
71 { "Name","Latitude", "Longitude", "Pressure", "Temperature" };
72 hid_t field_type[NFIELDS];
73 hid_t string_type;
74 hid_t file_id;
75 hsize_t chunk_size = 10;
76 int compress = 0;
77 int *fill_data = NULL;
78 hsize_t nfields_out;
79 hsize_t nrecords_out;
80 int i;
81
82 /* Initialize the field field_type */
83 string_type = H5Tcopy( H5T_C_S1 );
84 H5Tset_size( string_type, 16 );
85 field_type[0] = string_type;
86 field_type[1] = H5T_NATIVE_INT;
87 field_type[2] = H5T_NATIVE_INT;
88 field_type[3] = H5T_NATIVE_FLOAT;
89 field_type[4] = H5T_NATIVE_DOUBLE;
90
91 /* Create a new file using default properties. */
92 file_id = H5Fcreate( "ex_table_10.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );
93
94 /* Make two tables */
95 H5TBmake_table( "Table Title",file_id,TABLE1_NAME,NFIELDS,NRECORDS,
96 dst_size,field_names, dst_offset, field_type,
97 chunk_size, fill_data, compress, p_data );
98
99 H5TBmake_table( "Table Title",file_id,TABLE2_NAME,NFIELDS,NRECORDS,
100 dst_size,field_names, dst_offset, field_type,
101 chunk_size, fill_data, compress, p_data );
102
103 /* Combine the two tables into a third in the same file */
104 H5TBcombine_tables( file_id, TABLE1_NAME, file_id, TABLE2_NAME, TABLE3_NAME );
105
106 /* read the combined table */
107 H5TBread_table( file_id, TABLE3_NAME, dst_size, dst_offset, dst_sizes, dst_buf );
108
109 /* Get table info */
110 H5TBget_table_info (file_id,TABLE3_NAME, &nfields_out, &nrecords_out );
111
112 /* print */
113 printf ("Table has %d fields and %d records\n",(int)nfields_out,(int)nrecords_out);
114
115 /* print it by rows */
116 for (i=0; i<nrecords_out; i++) {
117 printf ("%-5s %-5d %-5d %-5f %-5f",
118 dst_buf[i].name,
119 dst_buf[i].lati,
120 dst_buf[i].longi,
121 dst_buf[i].pressure,
122 dst_buf[i].temperature);
123 printf ("\n");
124 }
125
126 /* close type */
127 H5Tclose( string_type );
128
129 /* close the file */
130 H5Fclose( file_id );
131
132 return 0;
133
134 }
135
136