H5DOappend

herr_t H5DOappend(hid_t dset_id,  hid_t dxpl_id,  uint  axis,
                      size_t extension,  hid_t memtype,  const  void *  buf)

Appends data to a dataset along a specified dimension.

This function appends data to a chunked dataset. It is designed for use cases where data is continuously added to a dataset, such as time-series data collection.

Parameters

`dset_id`	Dataset identifier (must be chunked)
`dxpl_id`	Dataset transfer property list identifier
`axis`	Dimension along which to append (0-based)
`extension`	Number of elements to extend the dataset
`memtype`	Memory datatype identifier
`buf`	Pointer to the data buffer to append

Returns

Non-negative on success, negative on failure.