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https://github.com/HDFGroup/hdf5.git
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bdd7d59902
Remove trailing whitespace from C/C++ source files, with the following script: foreach f (*.[ch] *.cpp) sed 's/[[:blank:]]*$//' $f > sed.out && mv sed.out $f end Tested on: Mac OS X/32 10.5.5 (amazon) No need for h5committest, just whitespace changes...
241 lines
5.8 KiB
C++
241 lines
5.8 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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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 files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* This example shows how to read data from a chunked dataset.
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* We will read from the file created by extend.cpp
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*/
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#ifdef OLD_HEADER_FILENAME
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#include <iostream.h>
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#else
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#include <iostream>
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#endif
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#include <string>
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#ifndef H5_NO_NAMESPACE
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#ifndef H5_NO_STD
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using std::cout;
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using std::endl;
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#endif // H5_NO_STD
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#endif
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#include "H5Cpp.h"
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#ifndef H5_NO_NAMESPACE
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using namespace H5;
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#endif
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const H5std_string FILE_NAME( "SDSextendible.h5" );
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const H5std_string DATASET_NAME( "ExtendibleArray" );
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const int NX = 10;
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const int NY = 5;
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const int RANK = 2;
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const int RANKC = 1;
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int main (void)
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{
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hsize_t i, j;
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// Try block to detect exceptions raised by any of the calls inside it
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try
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{
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/*
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* Turn off the auto-printing when failure occurs so that we can
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* handle the errors appropriately
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*/
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Exception::dontPrint();
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/*
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* Open the file and the dataset.
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*/
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H5File file( FILE_NAME, H5F_ACC_RDONLY );
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DataSet dataset = file.openDataSet( DATASET_NAME );
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/*
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* Get filespace for rank and dimension
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*/
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DataSpace filespace = dataset.getSpace();
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/*
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* Get number of dimensions in the file dataspace
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*/
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int rank = filespace.getSimpleExtentNdims();
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/*
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* Get and print the dimension sizes of the file dataspace
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*/
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hsize_t dims[2]; // dataset dimensions
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rank = filespace.getSimpleExtentDims( dims );
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cout << "dataset rank = " << rank << ", dimensions "
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<< (unsigned long)(dims[0]) << " x "
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<< (unsigned long)(dims[1]) << endl;
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/*
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* Define the memory space to read dataset.
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*/
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DataSpace mspace1(RANK, dims);
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/*
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* Read dataset back and display.
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*/
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int data_out[NX][NY]; // buffer for dataset to be read
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dataset.read( data_out, PredType::NATIVE_INT, mspace1, filespace );
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cout << "\n";
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cout << "Dataset: \n";
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for (j = 0; j < dims[0]; j++)
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{
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for (i = 0; i < dims[1]; i++)
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cout << data_out[j][i] << " ";
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cout << endl;
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}
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/*
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* dataset rank 2, dimensions 10 x 5
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* chunk rank 2, dimensions 2 x 5
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* Dataset:
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* 1 1 1 3 3
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* 1 1 1 3 3
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* 1 1 1 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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* 2 0 0 0 0
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*/
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/*
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* Read the third column from the dataset.
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* First define memory dataspace, then define hyperslab
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* and read it into column array.
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*/
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hsize_t col_dims[1];
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col_dims[0] = 10;
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DataSpace mspace2( RANKC, col_dims );
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/*
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* Define the column (hyperslab) to read.
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*/
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hsize_t offset[2] = { 0, 2 };
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hsize_t count[2] = { 10, 1 };
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int column[10]; // buffer for column to be read
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/*
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* Define hyperslab and read.
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*/
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filespace.selectHyperslab( H5S_SELECT_SET, count, offset );
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dataset.read( column, PredType::NATIVE_INT, mspace2, filespace );
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cout << endl;
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cout << "Third column: " << endl;
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for (i = 0; i < 10; i++)
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cout << column[i] << endl;
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/*
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* Third column:
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* 1
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* 1
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* 1
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* 0
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* 0
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* 0
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* 0
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* 0
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* 0
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* 0
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*/
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/*
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* Get creation properties list.
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*/
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DSetCreatPropList cparms = dataset.getCreatePlist();
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/*
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* Check if dataset is chunked.
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*/
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hsize_t chunk_dims[2];
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int rank_chunk;
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if( H5D_CHUNKED == cparms.getLayout() )
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{
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/*
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* Get chunking information: rank and dimensions
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*/
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rank_chunk = cparms.getChunk( 2, chunk_dims);
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cout << "chunk rank " << rank_chunk << "dimensions "
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<< (unsigned long)(chunk_dims[0]) << " x "
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<< (unsigned long)(chunk_dims[1]) << endl;
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/*
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* Define the memory space to read a chunk.
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*/
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DataSpace mspace3( rank_chunk, chunk_dims );
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/*
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* Define chunk in the file (hyperslab) to read.
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*/
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offset[0] = 2;
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offset[1] = 0;
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count[0] = chunk_dims[0];
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count[1] = chunk_dims[1];
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filespace.selectHyperslab( H5S_SELECT_SET, count, offset );
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/*
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* Read chunk back and display.
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*/
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int chunk_out[2][5]; // buffer for chunk to be read
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dataset.read( chunk_out, PredType::NATIVE_INT, mspace3, filespace );
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cout << endl;
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cout << "Chunk:" << endl;
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for (j = 0; j < chunk_dims[0]; j++)
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{
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for (i = 0; i < chunk_dims[1]; i++)
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cout << chunk_out[j][i] << " ";
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cout << endl;
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}
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/*
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* Chunk:
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* 1 1 1 0 0
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* 2 0 0 0 0
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*/
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}
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} // end of try block
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// catch failure caused by the H5File operations
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catch( FileIException error )
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{
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error.printError();
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return -1;
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}
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// catch failure caused by the DataSet operations
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catch( DataSetIException error )
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{
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error.printError();
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return -1;
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}
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// catch failure caused by the DataSpace operations
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catch( DataSpaceIException error )
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{
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error.printError();
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return -1;
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}
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return 0;
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}
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