mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-09 02:39:55 +08:00
ed7d456e51
Tested platform: Kagiso only since it is only a comment block change. If it works in one machine, it should work in all, I hope. Still need to check the parallel build on copper.
223 lines
6.1 KiB
C++
223 lines
6.1 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
* Copyright by The HDF Group. *
|
|
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
|
|
* access to either file, you may request a copy from help@hdfgroup.org. *
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
|
|
|
//
|
|
// This example reads hyperslab from the SDS.h5 file into
|
|
// two-dimensional plane of a three-dimensional array. Various
|
|
// information about the dataset in the SDS.h5 file is obtained.
|
|
//
|
|
|
|
#ifdef OLD_HEADER_FILENAME
|
|
#include <iostream.h>
|
|
#else
|
|
#include <iostream>
|
|
#endif
|
|
#include <string>
|
|
|
|
#ifndef H5_NO_NAMESPACE
|
|
#ifndef H5_NO_STD
|
|
using std::cout;
|
|
using std::endl;
|
|
#endif // H5_NO_STD
|
|
#endif
|
|
|
|
#include "H5Cpp.h"
|
|
|
|
#ifndef H5_NO_NAMESPACE
|
|
using namespace H5;
|
|
#endif
|
|
|
|
const H5std_string FILE_NAME( "SDS.h5" );
|
|
const H5std_string DATASET_NAME( "IntArray" );
|
|
const int NX_SUB = 3; // hyperslab dimensions
|
|
const int NY_SUB = 4;
|
|
const int NX = 7; // output buffer dimensions
|
|
const int NY = 7;
|
|
const int NZ = 3;
|
|
const int RANK_OUT = 3;
|
|
|
|
int main (void)
|
|
{
|
|
/*
|
|
* Output buffer initialization.
|
|
*/
|
|
int i, j, k;
|
|
int data_out[NX][NY][NZ ]; /* output buffer */
|
|
for (j = 0; j < NX; j++)
|
|
{
|
|
for (i = 0; i < NY; i++)
|
|
{
|
|
for (k = 0; k < NZ ; k++)
|
|
data_out[j][i][k] = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try block to detect exceptions raised by any of the calls inside it
|
|
*/
|
|
try
|
|
{
|
|
/*
|
|
* Turn off the auto-printing when failure occurs so that we can
|
|
* handle the errors appropriately
|
|
*/
|
|
Exception::dontPrint();
|
|
|
|
/*
|
|
* Open the specified file and the specified dataset in the file.
|
|
*/
|
|
H5File file( FILE_NAME, H5F_ACC_RDONLY );
|
|
DataSet dataset = file.openDataSet( DATASET_NAME );
|
|
|
|
/*
|
|
* Get the class of the datatype that is used by the dataset.
|
|
*/
|
|
H5T_class_t type_class = dataset.getTypeClass();
|
|
|
|
/*
|
|
* Get class of datatype and print message if it's an integer.
|
|
*/
|
|
if( type_class == H5T_INTEGER )
|
|
{
|
|
cout << "Data set has INTEGER type" << endl;
|
|
|
|
/*
|
|
* Get the integer datatype
|
|
*/
|
|
IntType intype = dataset.getIntType();
|
|
|
|
/*
|
|
* Get order of datatype and print message if it's a little endian.
|
|
*/
|
|
H5std_string order_string;
|
|
H5T_order_t order = intype.getOrder( order_string );
|
|
cout << order_string << endl;
|
|
|
|
/*
|
|
* Get size of the data element stored in file and print it.
|
|
*/
|
|
size_t size = intype.getSize();
|
|
cout << "Data size is " << size << endl;
|
|
}
|
|
|
|
/*
|
|
* Get dataspace of the dataset.
|
|
*/
|
|
DataSpace dataspace = dataset.getSpace();
|
|
|
|
/*
|
|
* Get the number of dimensions in the dataspace.
|
|
*/
|
|
int rank = dataspace.getSimpleExtentNdims();
|
|
|
|
/*
|
|
* Get the dimension size of each dimension in the dataspace and
|
|
* display them.
|
|
*/
|
|
hsize_t dims_out[2];
|
|
int ndims = dataspace.getSimpleExtentDims( dims_out, NULL);
|
|
cout << "rank " << rank << ", dimensions " <<
|
|
(unsigned long)(dims_out[0]) << " x " <<
|
|
(unsigned long)(dims_out[1]) << endl;
|
|
|
|
/*
|
|
* Define hyperslab in the dataset; implicitly giving strike and
|
|
* block NULL.
|
|
*/
|
|
hsize_t offset[2]; // hyperslab offset in the file
|
|
hsize_t count[2]; // size of the hyperslab in the file
|
|
offset[0] = 1;
|
|
offset[1] = 2;
|
|
count[0] = NX_SUB;
|
|
count[1] = NY_SUB;
|
|
dataspace.selectHyperslab( H5S_SELECT_SET, count, offset );
|
|
|
|
/*
|
|
* Define the memory dataspace.
|
|
*/
|
|
hsize_t dimsm[3]; /* memory space dimensions */
|
|
dimsm[0] = NX;
|
|
dimsm[1] = NY;
|
|
dimsm[2] = NZ ;
|
|
DataSpace memspace( RANK_OUT, dimsm );
|
|
|
|
/*
|
|
* Define memory hyperslab.
|
|
*/
|
|
hsize_t offset_out[3]; // hyperslab offset in memory
|
|
hsize_t count_out[3]; // size of the hyperslab in memory
|
|
offset_out[0] = 3;
|
|
offset_out[1] = 0;
|
|
offset_out[2] = 0;
|
|
count_out[0] = NX_SUB;
|
|
count_out[1] = NY_SUB;
|
|
count_out[2] = 1;
|
|
memspace.selectHyperslab( H5S_SELECT_SET, count_out, offset_out );
|
|
|
|
/*
|
|
* Read data from hyperslab in the file into the hyperslab in
|
|
* memory and display the data.
|
|
*/
|
|
dataset.read( data_out, PredType::NATIVE_INT, memspace, dataspace );
|
|
|
|
for (j = 0; j < NX; j++)
|
|
{
|
|
for (i = 0; i < NY; i++)
|
|
cout << data_out[j][i][0] << " ";
|
|
cout << endl;
|
|
}
|
|
/*
|
|
* 0 0 0 0 0 0 0
|
|
* 0 0 0 0 0 0 0
|
|
* 0 0 0 0 0 0 0
|
|
* 3 4 5 6 0 0 0
|
|
* 4 5 6 7 0 0 0
|
|
* 5 6 7 8 0 0 0
|
|
* 0 0 0 0 0 0 0
|
|
*/
|
|
} // end of try block
|
|
|
|
// catch failure caused by the H5File operations
|
|
catch( FileIException error )
|
|
{
|
|
error.printError();
|
|
return -1;
|
|
}
|
|
|
|
// catch failure caused by the DataSet operations
|
|
catch( DataSetIException error )
|
|
{
|
|
error.printError();
|
|
return -1;
|
|
}
|
|
|
|
// catch failure caused by the DataSpace operations
|
|
catch( DataSpaceIException error )
|
|
{
|
|
error.printError();
|
|
return -1;
|
|
}
|
|
|
|
// catch failure caused by the DataSpace operations
|
|
catch( DataTypeIException error )
|
|
{
|
|
error.printError();
|
|
return -1;
|
|
}
|
|
|
|
return 0; // successfully terminated
|
|
}
|
|
|