Create new data space
space_id = H5S.create(space_type)
space_id = H5S.create(space_type) creates a new dataspace of the type
space_type. Specify space_type as one of these
character vectors or string scalars.
'H5S_SCALAR' |
'H5S_SIMPLE' |
'H5S_NULL' |
space_id is the identifier for the new dataspace.
Create a scalar dataspace.
space_id = H5S.create('H5S_SCALAR');
numpoints = H5S.get_simple_extent_npoints(space_id);