Fig. 1 : Volvelles, carefully designed interactive wheel charts, have been used for centuries to present a wide variety of data. Our approach allows the simple creation of a volumetric Volvelle, or Vol 2 velle (see rightmost image), directly from an interactive volume visualization setup. The leftmost and center image are courtesy of the National Library of Whales and the Welcome Library London (record ID = b1655695), respectively. Abstract-Interaction is an indispensable aspect of data

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... ation. The presentation of volumetric data, in particular, often significantly benefits from interactive manipulation of parameters such as transfer functions, rendering styles, or clipping planes. However, when we want to create hardcopies of such visualizations, this essential aspect is lost. In this paper, we present a novel approach for creating hardcopies of volume visualizations which preserves a certain degree of interactivity. We present a method for automatically generating Volvelles, printable tangible wheel charts that can be manipulated to explore different parameter settings. Our interactive system allows the flexible mapping of arbitrary visualization parameters and supports advanced features such as linked views. The resulting designs can be easily reproduced using a standard printer and assembled within a few minutes.