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https://github.com/HDFGroup/hdf5.git
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11dfa25910
* Updated source file copyright headers to remove "Copyright by the Board of Trustees of the University of Illinois", which is kept in the top-level COPYING file.
107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "hdf5.h"
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#include "hdf5_hl.h"
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#include <stdlib.h>
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/*-------------------------------------------------------------------------
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* Table API example
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*
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* H5TBwrite_records
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*
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*-------------------------------------------------------------------------
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*/
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#define NFIELDS (hsize_t)5
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#define NRECORDS (hsize_t)8
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#define NRECORDS_WRITE (hsize_t)2
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#define TABLE_NAME "table"
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int
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main(void)
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{
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typedef struct Particle {
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char name[16];
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int lati;
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int longi;
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float pressure;
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double temperature;
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} Particle;
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Particle dst_buf[NRECORDS];
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/* Calculate the size and the offsets of our struct members in memory */
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size_t dst_size = sizeof(Particle);
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size_t dst_offset[NFIELDS] = {HOFFSET(Particle, name), HOFFSET(Particle, lati), HOFFSET(Particle, longi),
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HOFFSET(Particle, pressure), HOFFSET(Particle, temperature)};
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Particle p = {"zero", 0, 0, 0.0F, 0.0};
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size_t dst_sizes[NFIELDS] = {sizeof(p.name), sizeof(p.lati), sizeof(p.longi), sizeof(p.pressure),
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sizeof(p.temperature)};
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/* Define field information */
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const char *field_names[NFIELDS] = {"Name", "Latitude", "Longitude", "Pressure", "Temperature"};
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/* Fill value particle */
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Particle fill_data[1] = {{"no data", -1, -1, -99.0F, -99.0}};
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hid_t field_type[NFIELDS];
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hid_t string_type;
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hid_t file_id;
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hsize_t chunk_size = 10;
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hsize_t start; /* Record to start reading/writing */
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hsize_t nrecords; /* Number of records to read/write */
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int i;
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/* Define 2 new particles to write */
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Particle particle_in[NRECORDS_WRITE] = {{"zero", 0, 0, 0.0F, 0.0}, {"one", 10, 10, 1.0F, 10.0}};
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/* Initialize the field field_type */
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string_type = H5Tcopy(H5T_C_S1);
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H5Tset_size(string_type, 16);
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field_type[0] = string_type;
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field_type[1] = H5T_NATIVE_INT;
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field_type[2] = H5T_NATIVE_INT;
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field_type[3] = H5T_NATIVE_FLOAT;
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field_type[4] = H5T_NATIVE_DOUBLE;
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/* Create a new file using default properties. */
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file_id = H5Fcreate("ex_table_03.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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/* Make the table */
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H5TBmake_table("Table Title", file_id, TABLE_NAME, NFIELDS, NRECORDS, dst_size, field_names, dst_offset,
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field_type, chunk_size, fill_data, 0, /* no compression */
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NULL); /* no data written */
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/* Overwrite 2 records starting at record 0 */
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start = 0;
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nrecords = NRECORDS_WRITE;
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H5TBwrite_records(file_id, TABLE_NAME, start, nrecords, dst_size, dst_offset, dst_sizes, particle_in);
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/* read the table */
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H5TBread_table(file_id, TABLE_NAME, dst_size, dst_offset, dst_sizes, dst_buf);
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/* print it by rows */
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for (i = 0; i < NRECORDS; i++) {
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printf("%-5s %-5d %-5d %-5f %-5f", dst_buf[i].name, dst_buf[i].lati, dst_buf[i].longi,
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dst_buf[i].pressure, dst_buf[i].temperature);
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printf("\n");
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}
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/* close type */
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H5Tclose(string_type);
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/* close the file */
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H5Fclose(file_id);
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return 0;
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}
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