diff options
Diffstat (limited to 'c++/examples/h5group.cpp')
| -rw-r--r-- | c++/examples/h5group.cpp | 86 |
1 files changed, 38 insertions, 48 deletions
diff --git a/c++/examples/h5group.cpp b/c++/examples/h5group.cpp index 271c538..3d2c6d9 100644 --- a/c++/examples/h5group.cpp +++ b/c++/examples/h5group.cpp @@ -32,22 +32,21 @@ using std::endl; #include "H5Cpp.h" using namespace H5; -const H5std_string FILE_NAME( "Group.h5" ); +const H5std_string FILE_NAME("Group.h5"); const int RANK = 2; // Operator function -extern "C" herr_t file_info(hid_t loc_id, const char *name, const H5L_info2_t *linfo, - void *opdata); +extern "C" herr_t file_info(hid_t loc_id, const char *name, const H5L_info2_t *linfo, void *opdata); -int main(void) +int +main(void) { - hsize_t dims[2]; - hsize_t cdims[2]; + hsize_t dims[2]; + hsize_t cdims[2]; // 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 @@ -58,12 +57,12 @@ int main(void) * Create the named file, truncating the existing one if any, * using default create and access property lists. */ - H5File *file = new H5File( FILE_NAME, H5F_ACC_TRUNC ); + H5File *file = new H5File(FILE_NAME, H5F_ACC_TRUNC); /* * Create a group in the file */ - Group* group = new Group( file->createGroup( "/Data" )); + Group *group = new Group(file->createGroup("/Data")); /* * Create dataset "Compressed Data" in the group using absolute @@ -71,21 +70,20 @@ int main(void) * GZIP compression with the compression effort set to 6. * Note that compression can be used only when dataset is chunked. */ - dims[0] = 1000; - dims[1] = 20; - cdims[0] = 20; - cdims[1] = 20; - DataSpace *dataspace = new DataSpace(RANK, dims); // create new dspace - DSetCreatPropList ds_creatplist; // create dataset creation prop list - ds_creatplist.setChunk( 2, cdims ); // then modify it for compression - ds_creatplist.setDeflate( 6 ); + dims[0] = 1000; + dims[1] = 20; + cdims[0] = 20; + cdims[1] = 20; + DataSpace * dataspace = new DataSpace(RANK, dims); // create new dspace + DSetCreatPropList ds_creatplist; // create dataset creation prop list + ds_creatplist.setChunk(2, cdims); // then modify it for compression + ds_creatplist.setDeflate(6); /* * Create the first dataset. */ - DataSet* dataset = new DataSet(file->createDataSet( - "/Data/Compressed_Data", PredType::NATIVE_INT, - *dataspace, ds_creatplist )); + DataSet *dataset = new DataSet( + file->createDataSet("/Data/Compressed_Data", PredType::NATIVE_INT, *dataspace, ds_creatplist)); /* * Close the first dataset. @@ -96,11 +94,10 @@ int main(void) /* * Create the second dataset. */ - dims[0] = 500; - dims[1] = 20; + dims[0] = 500; + dims[1] = 20; dataspace = new DataSpace(RANK, dims); // create second dspace - dataset = new DataSet(file->createDataSet("/Data/Float_Data", - PredType::NATIVE_FLOAT, *dataspace)); + dataset = new DataSet(file->createDataSet("/Data/Float_Data", PredType::NATIVE_FLOAT, *dataspace)); delete dataset; delete dataspace; @@ -110,16 +107,16 @@ int main(void) /* * Now reopen the file and group in the file. */ - file = new H5File(FILE_NAME, H5F_ACC_RDWR); + file = new H5File(FILE_NAME, H5F_ACC_RDWR); group = new Group(file->openGroup("Data")); /* * Access "Compressed_Data" dataset in the group. */ - try { // to determine if the dataset exists in the group - dataset = new DataSet( group->openDataSet( "Compressed_Data" )); + try { // to determine if the dataset exists in the group + dataset = new DataSet(group->openDataSet("Compressed_Data")); } - catch( GroupIException not_found_error ) { + catch (GroupIException not_found_error) { cout << " Dataset is not found." << endl; } cout << "dataset \"/Data/Compressed_Data\" is open" << endl; @@ -132,17 +129,16 @@ int main(void) /* * Create hard link to the Data group. */ - file->link( H5L_TYPE_HARD, "Data", "Data_new" ); + file->link(H5L_TYPE_HARD, "Data", "Data_new"); /* * We can access "Compressed_Data" dataset using created * hard link "Data_new". */ - try { // to determine if the dataset exists in the file - dataset = new DataSet(file->openDataSet( "/Data_new/Compressed_Data" )); + try { // to determine if the dataset exists in the file + dataset = new DataSet(file->openDataSet("/Data_new/Compressed_Data")); } - catch( FileIException not_found_error ) - { + catch (FileIException not_found_error) { cout << " Dataset is not found." << endl; } cout << "dataset \"/Data_new/Compressed_Data\" is open" << endl; @@ -165,11 +161,10 @@ int main(void) * of the objects in the file root direvtory. */ cout << "Unlinking..." << endl; - try { // attempt to unlink the dataset - file->unlink( "Data" ); + try { // attempt to unlink the dataset + file->unlink("Data"); } - catch( FileIException unlink_error ) - { + catch (FileIException unlink_error) { cout << " unlink failed." << endl; } cout << "\"Data\" is unlinked" << endl; @@ -183,32 +178,28 @@ int main(void) */ delete group; delete file; - } // 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; } // catch failure caused by the Attribute operations - catch( AttributeIException error ) - { + catch (AttributeIException error) { error.printErrorStack(); return -1; } @@ -236,4 +227,3 @@ file_info(hid_t loc_id, const char *name, const H5L_info2_t *linfo, void *opdata H5Gclose(group); return 0; } - |