This paper describes a minimally immersive interactive system for flow visu
alization of multivariate volumetric data. The system, SFA, uses perceptual
ly motivated rendering to increase the quantity and clarity of information
perceived. Proprioception, stereopsis, perceptually motivated shape visuali
zation, and three-dimensional interaction are combined In SFA to allow the
three-dimensional volumetric visualization, manipulation, navigation, and a
nalysis of multivariate, time-varying flow data.