Our experience with DataSplash indicates that users find it difficult to construct visualizations that display an appropriate amount of detail. In this paper, we introduce extensions to DataSplash based on the Principle of Constant Information Density. These extensions give users feedback about the density of visualizations as they create them.
We have performed an informal study of user navigation in applications with and without constant information density. Our results suggest that users avoid higher density displays in preference for lower density displays and that users pan more frequently in lower density displays. This implies that designers should take density into account when designing applications to avoid unexpected user navigation patterns.