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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_05.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_05.c')
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diff --git a/hl/examples/ex_table_05.c b/hl/examples/ex_table_05.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_fields_index
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#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;
+
+ /* Define a subset of Particle, with latitude and longitude fields */
+ typedef struct Position
+ {
+ int lati;
+ int longi;
+ } Position;
+
+ /* Define a subset of Particle, with name and pressure fields */
+ typedef struct NamePressure
+ {
+ char name[16];
+ float pressure;
+ } NamePressure;
+
+ /* Calculate the type_size and the offsets of our struct members */
+ Particle dst_buf[NRECORDS];
+ 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)};
+
+ size_t field_offset_pos[2] = { HOFFSET( Position, lati ),
+ HOFFSET( Position, longi )};
+
+ /* Initially no data */
+ Particle *p_data = NULL;
+
+ /* 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;
+ Particle fill_data[1] =
+ { {"no data",-1,-1, -99.0f, -99.0} }; /* Fill value particle */
+ int compress = 0;
+ hsize_t nfields;
+ hsize_t start; /* Record to start reading/writing */
+ hsize_t nrecords; /* Number of records to read/write */
+ herr_t status;
+ int i;
+
+ /* Define new values for the field "Pressure" */
+ float pressure_in [NRECORDS] =
+ { 0.0f,1.0f,2.0f,3.0f,4.0f,5.0f,6.0f,7.0f };
+
+ int field_index_pre[1] = { 3 };
+ int field_index_pos[2] = { 1,2 };
+
+ /* Define new values for the fields "Latitude,Longitude" */
+ Position position_in[NRECORDS] = { {0,0},
+ {10,10},
+ {20,20},
+ {30,30},
+ {40,40},
+ {50,50},
+ {60,60},
+ {70,70} };
+
+ size_t field_sizes_pos[2]=
+ {
+ sizeof(position_in[0].longi),
+ sizeof(position_in[0].lati)
+ };
+
+ size_t field_sizes_pre[1]=
+ {
+ sizeof(float)
+ };
+
+ /* 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_05.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 );
+
+ /* Write the pressure field starting at record 2 */
+ nfields = 1;
+ start = 2;
+ nrecords = 3;
+ status=H5TBwrite_fields_index( file_id, TABLE_NAME, nfields, field_index_pre, start, nrecords,
+ sizeof( float ), 0, field_sizes_pre, pressure_in );
+
+ /* Write the new longitude and latitude information starting at record 2 */
+ nfields = 2;
+ start = 2;
+ nrecords = 3;
+ status=H5TBwrite_fields_index( file_id, TABLE_NAME, nfields, field_index_pos, start, nrecords,
+ sizeof( Position ), field_offset_pos, field_sizes_pos, position_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;
+
+}
+