summaryrefslogtreecommitdiffstats
path: root/hl/examples/ex_table_07.c
blob: eb365b29835f34239582db02d1c0b6c4e061784b (plain)
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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include "hdf5.h"
#include "hdf5_hl.h"
#include <stdlib.h>

/*-------------------------------------------------------------------------
 * Table API example
 *
 * H5TBdelete_record
 *
 *-------------------------------------------------------------------------
 */

#define NFIELDS  (hsize_t)  5
#define NRECORDS (hsize_t)  8
#define TABLE_NAME          "table"

int main( void )
{
 typedef struct Particle 
 {
  char   name[16];
  int    lati;
  int    longi;
  float  pressure;
  double temperature; 
 } Particle;

 /* 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 )};
  
 /* 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}
  };

 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;
 int        compress  = 0;
 Particle   fill_data[1] = 
 { {"no data",-1,-1, -99.0f, -99.0} };
 hsize_t    start;                      /* Record to start reading */
 hsize_t    nrecords;                   /* Number of records to insert/delete */
 hsize_t    nfields_out;
 hsize_t    nrecords_out;
 herr_t     status; 
 
 /* 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_07.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  );
 
 /* Delete records  */
 start    = 3;      
 nrecords = 3; 
 status=H5TBdelete_record( file_id, TABLE_NAME, start, nrecords );

  /* Get table info  */
 status=H5TBget_table_info (file_id,TABLE_NAME, &nfields_out, &nrecords_out );

 /* print */
 printf ("Table has %d fields and %d records\n",(int)nfields_out,(int)nrecords_out);
 
 /* Close the file. */
 H5Fclose( file_id );
 
 return 0;
 
}