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authorAllen Byrne <byrn@hdfgroup.org>2020-10-01 14:04:36 (GMT)
committerAllen Byrne <byrn@hdfgroup.org>2020-10-01 14:04:36 (GMT)
commitf1ba03cea5b82699a984c80bd2deac14fdc8df18 (patch)
treeebe777c3e0b83f4c4cec9212731da9ebe0a0cfd3 /c++/examples/chunks.cpp
parent10343c197906415388f2a4c8d292e21d25cf7381 (diff)
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Diffstat (limited to 'c++/examples/chunks.cpp')
-rw-r--r--c++/examples/chunks.cpp84
1 files changed, 38 insertions, 46 deletions
diff --git a/c++/examples/chunks.cpp b/c++/examples/chunks.cpp
index 03e2855..fdcb6d3 100644
--- a/c++/examples/chunks.cpp
+++ b/c++/examples/chunks.cpp
@@ -28,20 +28,20 @@ using std::endl;
#include "H5Cpp.h"
using namespace H5;
-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;
-const int RANKC = 1;
-
-int main (void)
+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;
+const int RANKC = 1;
+
+int
+main(void)
{
- hsize_t i, j;
+ hsize_t i, j;
// Try block to detect exceptions raised by any of the calls inside it
- try
- {
+ try {
/*
* Turn off the auto-printing when failure occurs so that we can
* handle the errors appropriately
@@ -51,8 +51,8 @@ int main (void)
/*
* Open the file and the dataset.
*/
- H5File file( FILE_NAME, H5F_ACC_RDONLY );
- DataSet dataset = file.openDataSet( DATASET_NAME );
+ H5File file(FILE_NAME, H5F_ACC_RDONLY);
+ DataSet dataset = file.openDataSet(DATASET_NAME);
/*
* Get filespace for rank and dimension
@@ -67,10 +67,9 @@ int main (void)
/*
* Get and print the dimension sizes of the file dataspace
*/
- hsize_t dims[2]; // dataset dimensions
- rank = filespace.getSimpleExtentDims( dims );
- cout << "dataset rank = " << rank << ", dimensions "
- << (unsigned long)(dims[0]) << " x "
+ hsize_t dims[2]; // dataset dimensions
+ rank = filespace.getSimpleExtentDims(dims);
+ cout << "dataset rank = " << rank << ", dimensions " << (unsigned long)(dims[0]) << " x "
<< (unsigned long)(dims[1]) << endl;
/*
@@ -81,13 +80,12 @@ int main (void)
/*
* Read dataset back and display.
*/
- int data_out[NX][NY]; // buffer for dataset to be read
- dataset.read( data_out, PredType::NATIVE_INT, mspace1, filespace );
+ int data_out[NX][NY]; // buffer for dataset to be read
+ dataset.read(data_out, PredType::NATIVE_INT, mspace1, filespace);
cout << "\n";
cout << "Dataset: \n";
- for (j = 0; j < dims[0]; j++)
- {
+ for (j = 0; j < dims[0]; j++) {
for (i = 0; i < dims[1]; i++)
cout << data_out[j][i] << " ";
cout << endl;
@@ -117,20 +115,20 @@ int main (void)
*/
hsize_t col_dims[1];
col_dims[0] = 10;
- DataSpace mspace2( RANKC, col_dims );
+ DataSpace mspace2(RANKC, col_dims);
/*
* Define the column (hyperslab) to read.
*/
- hsize_t offset[2] = { 0, 2 };
- hsize_t count[2] = { 10, 1 };
- int column[10]; // buffer for column to be read
+ hsize_t offset[2] = {0, 2};
+ hsize_t count[2] = {10, 1};
+ int column[10]; // buffer for column to be read
/*
* Define hyperslab and read.
*/
- filespace.selectHyperslab( H5S_SELECT_SET, count, offset );
- dataset.read( column, PredType::NATIVE_INT, mspace2, filespace );
+ filespace.selectHyperslab(H5S_SELECT_SET, count, offset);
+ dataset.read(column, PredType::NATIVE_INT, mspace2, filespace);
cout << endl;
cout << "Third column: " << endl;
@@ -161,20 +159,18 @@ int main (void)
*/
hsize_t chunk_dims[2];
int rank_chunk;
- if( H5D_CHUNKED == cparms.getLayout() )
- {
+ if (H5D_CHUNKED == cparms.getLayout()) {
/*
* Get chunking information: rank and dimensions
*/
- rank_chunk = cparms.getChunk( 2, chunk_dims);
- cout << "chunk rank " << rank_chunk << "dimensions "
- << (unsigned long)(chunk_dims[0]) << " x "
- << (unsigned long)(chunk_dims[1]) << endl;
+ rank_chunk = cparms.getChunk(2, chunk_dims);
+ cout << "chunk rank " << rank_chunk << "dimensions " << (unsigned long)(chunk_dims[0]) << " x "
+ << (unsigned long)(chunk_dims[1]) << endl;
/*
* Define the memory space to read a chunk.
*/
- DataSpace mspace3( rank_chunk, chunk_dims );
+ DataSpace mspace3(rank_chunk, chunk_dims);
/*
* Define chunk in the file (hyperslab) to read.
@@ -183,17 +179,16 @@ int main (void)
offset[1] = 0;
count[0] = chunk_dims[0];
count[1] = chunk_dims[1];
- filespace.selectHyperslab( H5S_SELECT_SET, count, offset );
+ filespace.selectHyperslab(H5S_SELECT_SET, count, offset);
/*
* Read chunk back and display.
*/
- int chunk_out[2][5]; // buffer for chunk to be read
- dataset.read( chunk_out, PredType::NATIVE_INT, mspace3, filespace );
+ int chunk_out[2][5]; // buffer for chunk to be read
+ dataset.read(chunk_out, PredType::NATIVE_INT, mspace3, filespace);
cout << endl;
cout << "Chunk:" << endl;
- for (j = 0; j < chunk_dims[0]; j++)
- {
+ for (j = 0; j < chunk_dims[0]; j++) {
for (i = 0; i < chunk_dims[1]; i++)
cout << chunk_out[j][i] << " ";
cout << endl;
@@ -204,25 +199,22 @@ int main (void)
* 2 0 0 0 0
*/
}
- } // end of try block
+ } // end of try block
// catch failure caused by the H5File operations
- catch( FileIException error )
- {
+ catch (FileIException error) {
error.printErrorStack();
return -1;
}
// catch failure caused by the DataSet operations
- catch( DataSetIException error )
- {
+ catch (DataSetIException error) {
error.printErrorStack();
return -1;
}
// catch failure caused by the DataSpace operations
- catch( DataSpaceIException error )
- {
+ catch (DataSpaceIException error) {
error.printErrorStack();
return -1;
}