Abstract: A method is performed at a computing device coupled with a display. The method includes displaying a graphical user interface that includes a data visualization in a first state, including a plurality of visual marks. Each of the plurality of visual marks is displayed in a corresponding first position. The method includes receiving user input in the graphical user interface to specify an action that triggers an animated transition of the data visualization from the first state to a second state. The data visualization in the second state includes one or more of the plurality of visual marks in corresponding second positions. The method includes, in response to the user input, triggering the animated transition of the data visualization from the first to the second state. The animated transition is configured by three or more visual parameters, including: an animation mode, an animation speed, and an animation emphasis.

Abstract: A virtual frame buffer controller in a computer's display system manages accesses to a display image stored in discrete compressed and uncompressed blocks distributed in physical memory. The controller maps conventional linear pixel addresses of a virtual frame buffer to pixel locations within blocks stored at arbitrary places in physical memory. The virtual frame buffer controller maintains a data structure, called a pointer list, to keep track of the physical memory location and compression state of each block of pixels in the virtual frame buffer. The virtual frame buffer controller initiates a decompression process to decompress a block when a pixel request maps to a pixel in a compressed block. The block remains decompressed until physical memory needs to be reclaimed to free up memory.