An extension of Trellis Display that enables creation, organization, and interactive viewing of multi-panel displays created against potentially very large data sets. The dynamic viewer tiles panels of a display across the screen in a web browser and allows the user to interactively page through the panels and sort and filter them based on "cognostic" metrics computed for each panel. Panels can be created using many of R's plotting capabilities, including base R graphics, lattice, ggplot2, and many htmlwidgets. Conditioning is handled through the datadr package, which enables Trelliscope displays with potentially millions of panels to be created against terabytes of data on systems like Hadoop. While designed to scale, Trelliscope displays can also be very useful for small datasets.