True for empty financial time series objects
tf = isempty(fts)
isempty for financial times series objects is based on the MATLAB® isempty function. See isempty in the MATLAB documentation.
tf = isempty(fts) returns true (1) if fts is an empty financial time series object and false (0) otherwise. An empty financial times series object has no elements, that is, length(fts) = 0.