Abstract: An interactive program is presented for numerically calculating various dynamical behaviour for the nonlinear dynamical systems which can be expressed as ordinary differential equations or maps. This program facilitates visual exploration of various visual behaviour such as the phase space,Poincare section,manifolds,bifurcation diagram and power spectrum,etc.by providing a set of visually oriented operation on graphic objects.

Key words: Interactive program, nonlinear dynamical systems, dynamical behaviour, visually oriented operation