Open object specified by index
obj_id = H5O.open_by_idx(loc_id, group_name, idx_type,
order, n, lapl_id)
obj_id = H5O.open_by_idx(loc_id, group_name, idx_type,
order, n, lapl_id) opens the n-th object
in the group specified by loc_id and group_name.
loc_id specifies a file or group. group_name specifies
the group relative to loc_id in which the object
can be found.
Two parameters are used to establish the iteration: index_type and
order. index_type specifies the type of index by which
objects are ordered. Specify index_type as one of these character vectors or
string scalars.
'H5_INDEX_NAME' | Alpha-numeric index on name |
'H5_INDEX_CRT_ORDER' | Index on creation order |
order specifies the order in which the links are to be referenced for the
purposes of this function. Specify order as one of these character vectors or
string scalars.
'H5_ITER_INC' | Increasing order |
'H5_ITER_DEC' | Decreasing order |
'H5_ITER_NATIVE' | Fastest available order |
n specifies the zero-based position of the
object within the index. lapl_id specifies the
link access property list to be used in accessing the object.
fid = H5F.open('example.h5'); idx_type = 'H5_INDEX_NAME'; order = 'H5_ITER_DEC'; obj_id = H5O.open_by_idx(fid,'g3',idx_type,order,0,'H5P_DEFAULT'); H5O.close(obj_id); H5F.close(fid);