  The Fisher-Shannon statistical measure of complexity is analyzed for a
continuous manifold of quantum observables. It is probed then than calculating
it only in the configuration and momentum spaces will not give a complete
description for certain systems. Then a more general measure for the complexity
of a quantum system by the integration of the usual Fisher-Shannon measure over
all the parameter space is proposed. Finally, these measures are applied to the
concrete case of a free particle in a box.
