%SETIDENT Set object identifiers%%   A = SETIDENT(A,IDENT,J)%% INPUT%   A      Dataset%   IDENT  Object identifiers%   J      Vector of indices of objects to be updated (optional; default: all)%% OUTPUT%   A      Updated dataset%% DESCRIPTION% Set or reset the identifiers of A by the object identifiers (cells, % characters or numbers) IDENT.