H5D_CREATE_ANON creates a dataset in the file specified by
loc_id may be a file, group, dataset, named datatype or attribute. If an attribute, dataset, or named datatype is specified for
loc_id then the dataset will be created at the location where the attribute, dataset, or named datatype is attached.
The dataset’s datatype and dataspace are specified by
space_id, respectively. These are the datatype and dataspace of the dataset as it will exist in the file, which may differ from the datatype and dataspace in application memory.
Dataset creation properties are specified in the dataset creation property list
dcpl_id. Dataset access properties are specified in the dataset access property list
H5D_CREATE_ANON returns a new dataset identifier. Using this identifier, the new dataset must be linked into the HDF5 file structure with H5O_LINK or it will be deleted from the file when the file is closed.
See H5D_CREATE for further details and considerations on the use of H5D_CREATE and H5D_CREATE_ANON.
The differences between this function and H5D_CREATE are as follows:
- H5D_CREATE_ANON explicitly includes a dataset access property list.
H5Dcreate always uses default dataset access properties.
- H5D_CREATE_ANON neither provides the new dataset’s name nor links it into the HDF5 file structure; those actions must be performed separately through a call to H5O_LINK, which offers greater control over linking.
A dataset created with this function should be closed with H5D_CLOSE when the dataset is no longer needed so that resource leaks will not develop.