mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-09 07:32:32 +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.
241 lines
6.4 KiB
C++
241 lines
6.4 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 shows how to work with extendible dataset.
|
|
* In the current version of the library dataset MUST be
|
|
* chunked.
|
|
*
|
|
*/
|
|
|
|
#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( "SDSextendible.h5" );
|
|
const H5std_string DATASET_NAME( "ExtendibleArray" );
|
|
const int NX = 10;
|
|
const int NY = 5;
|
|
const int RANK = 2;
|
|
|
|
int main (void)
|
|
{
|
|
/*
|
|
* 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();
|
|
|
|
/*
|
|
* Create the data space with unlimited dimensions.
|
|
*/
|
|
hsize_t dims[2] = { 3, 3}; // dataset dimensions at creation
|
|
hsize_t maxdims[2] = {H5S_UNLIMITED, H5S_UNLIMITED};
|
|
DataSpace mspace1( RANK, dims, maxdims);
|
|
|
|
/*
|
|
* Create a new file. If file exists its contents will be overwritten.
|
|
*/
|
|
H5File file( FILE_NAME, H5F_ACC_TRUNC );
|
|
|
|
/*
|
|
* Modify dataset creation properties, i.e. enable chunking.
|
|
*/
|
|
DSetCreatPropList cparms;
|
|
|
|
hsize_t chunk_dims[2] ={2, 5};
|
|
cparms.setChunk( RANK, chunk_dims );
|
|
|
|
/*
|
|
* Set fill value for the dataset
|
|
*/
|
|
int fill_val = 0;
|
|
cparms.setFillValue( PredType::NATIVE_INT, &fill_val);
|
|
|
|
/*
|
|
* Create a new dataset within the file using cparms
|
|
* creation properties.
|
|
*/
|
|
DataSet dataset = file.createDataSet( DATASET_NAME, PredType::NATIVE_INT, mspace1, cparms);
|
|
|
|
/*
|
|
* Extend the dataset. This call assures that dataset is at least 3 x 3.
|
|
*/
|
|
hsize_t size[2];
|
|
size[0] = 3;
|
|
size[1] = 3;
|
|
dataset.extend( size );
|
|
|
|
/*
|
|
* Select a hyperslab.
|
|
*/
|
|
DataSpace fspace1 = dataset.getSpace ();
|
|
hsize_t offset[2];
|
|
offset[0] = 0;
|
|
offset[1] = 0;
|
|
hsize_t dims1[2] = { 3, 3}; /* data1 dimensions */
|
|
fspace1.selectHyperslab( H5S_SELECT_SET, dims1, offset );
|
|
|
|
/*
|
|
* Write the data to the hyperslab.
|
|
*/
|
|
int data1[3][3] = { {1, 1, 1}, /* data to write */
|
|
{1, 1, 1},
|
|
{1, 1, 1} };
|
|
dataset.write( data1, PredType::NATIVE_INT, mspace1, fspace1 );
|
|
|
|
/*
|
|
* Extend the dataset. Dataset becomes 10 x 3.
|
|
*/
|
|
hsize_t dims2[2] = { 7, 1}; /* data2 dimensions */
|
|
dims[0] = dims1[0] + dims2[0];
|
|
size[0] = dims[0];
|
|
size[1] = dims[1];
|
|
dataset.extend( size );
|
|
|
|
/*
|
|
* Select a hyperslab.
|
|
*/
|
|
DataSpace fspace2 = dataset.getSpace ();
|
|
offset[0] = 3;
|
|
offset[1] = 0;
|
|
fspace2.selectHyperslab( H5S_SELECT_SET, dims2, offset );
|
|
|
|
/*
|
|
* Define memory space
|
|
*/
|
|
DataSpace mspace2( RANK, dims2 );
|
|
|
|
/*
|
|
* Write the data to the hyperslab.
|
|
*/
|
|
int data2[7] = { 2, 2, 2, 2, 2, 2, 2};
|
|
dataset.write( data2, PredType::NATIVE_INT, mspace2, fspace2 );
|
|
|
|
/*
|
|
* Extend the dataset. Dataset becomes 10 x 5.
|
|
*/
|
|
hsize_t dims3[2] = { 2, 2}; /* data3 dimensions */
|
|
dims[1] = dims1[1] + dims3[1];
|
|
size[0] = dims[0];
|
|
size[1] = dims[1];
|
|
dataset.extend( size );
|
|
|
|
/*
|
|
* Select a hyperslab
|
|
*/
|
|
DataSpace fspace3 = dataset.getSpace ();
|
|
offset[0] = 0;
|
|
offset[1] = 3;
|
|
fspace3.selectHyperslab( H5S_SELECT_SET, dims3, offset );
|
|
|
|
/*
|
|
* Define memory space.
|
|
*/
|
|
DataSpace mspace3( RANK, dims3 );
|
|
|
|
/*
|
|
* Write the data to the hyperslab.
|
|
*/
|
|
int data3[2][2] = { {3, 3}, {3, 3} };
|
|
dataset.write( data3, PredType::NATIVE_INT, mspace3, fspace3 );
|
|
|
|
/*
|
|
* Read the data from this dataset and display it.
|
|
*/
|
|
int i, j;
|
|
int data_out[NX][NY];
|
|
for (i = 0; i < NX; i++)
|
|
{
|
|
for (j = 0; j < NY; j++)
|
|
data_out[i][j] = 0;
|
|
}
|
|
dataset.read( data_out, PredType::NATIVE_INT );
|
|
/*
|
|
* Resulting dataset
|
|
*
|
|
* 1 1 1 3 3
|
|
* 1 1 1 3 3
|
|
* 1 1 1 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
* 2 0 0 0 0
|
|
*/
|
|
/*
|
|
* Display the result.
|
|
*/
|
|
for (i=0; i < NX; i++)
|
|
{
|
|
for(j=0; j < NY; j++)
|
|
cout << data_out[i][j] << " ";
|
|
cout << endl;
|
|
}
|
|
} // 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;
|
|
}
|