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authorPedro Vicente Nunes <pvn@hdfgroup.org>2006-03-06 16:11:11 (GMT)
committerPedro Vicente Nunes <pvn@hdfgroup.org>2006-03-06 16:11:11 (GMT)
commita83d815631e9981f3a89f4347d6a481e0fb7c62d (patch)
treedb77b10d8c5c6247f59d0352a747bcc4a70babcd /hl/examples/ex_table_03.c
parent0f8fa98da0b4b61173cc82f3123c736c1eec1552 (diff)
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[svn-r12009] Purpose:
add examples Description: add examples for HL (image, table and dimension scales) Solution: Platforms tested: linux Misc. update:
Diffstat (limited to 'hl/examples/ex_table_03.c')
-rw-r--r--hl/examples/ex_table_03.c134
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diff --git a/hl/examples/ex_table_03.c b/hl/examples/ex_table_03.c
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 "H5TB.h"
+#include <stdlib.h>
+
+/*-------------------------------------------------------------------------
+ * Table API example
+ *
+ * H5TBwrite_records
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#define NFIELDS (hsize_t) 5
+#define NRECORDS (hsize_t) 8
+#define NRECORDS_WRITE (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];
+
+ /* 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 )};
+
+ Particle p = {"zero",0,0, 0.0f, 0.0};
+ size_t dst_sizes[NFIELDS] = { sizeof( p.name),
+ sizeof( p.lati),
+ sizeof( p.longi),
+ sizeof( p.pressure),
+ sizeof( p.temperature)};
+
+ /* Define field information */
+ const char *field_names[NFIELDS] =
+ { "Name","Latitude", "Longitude", "Pressure", "Temperature" };
+ /* Fill value particle */
+ Particle fill_data[1] =
+ { {"no data",-1,-1, -99.0f, -99.0} };
+ hid_t field_type[NFIELDS];
+ hid_t string_type;
+ hid_t file_id;
+ hsize_t chunk_size = 10;
+ hsize_t start; /* Record to start reading/writing */
+ hsize_t nrecords; /* Number of records to read/write */
+ herr_t status;
+ int i;
+
+ /* Define 2 new particles to write */
+ Particle particle_in[NRECORDS_WRITE] =
+ { {"zero",0,0, 0.0f, 0.0},
+ {"one",10,10, 1.0f, 10.0} };
+
+ /* 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_03.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,
+ 0, /* no compression */
+ NULL ); /* no data written */
+
+
+ /* Overwrite 2 records starting at record 0 */
+ start = 0;
+ nrecords = NRECORDS_WRITE;
+ status=H5TBwrite_records( file_id, TABLE_NAME, start, nrecords, 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; 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 the file. */
+ H5Fclose( file_id );
+
+ return 0;
+
+}
+