  Flow diagram of $(\sigma_{xx}, \sigma_{xy})$ in finite-frequency ($\omega$)
regime is numerically studied for graphene quantum Hall effect (QHE) system.
The ac flow diagrams turn out to show qualitatively similar behavior as the dc
flow diagrams, which can be understood that the dynamical length scale
determined by the frequency poses a relevant cutoff for the renormalization
flow. Then the two parameter flow is discussed in terms of the dynamical
scaling theory. We also discuss the larger-$\omega$ regime which exhibits
classical flows driven by the raw frequency $\omega$.
