The propagation of an optical beam in dispersive medium is described by a spatial analog of pulse propagation in time domain. In particular, the evolution of transverse beam profiles with transversely complicated wave fronts passing through spatially dispersive media is examined and explained on the basis of net group and reshaping shifts in the $\ensuremath{\omega}$ and $\stackrel{P\vec}{k}$ domains. The experimental results are in good agreement with the theory of net group and reshaping delays as described by Peatross et al. [, , and , Phys. Rev. Lett. 84, 2370 (2000)], which successfully described the arrival time for optical pulses through frequency dispersive media.