CS 69191: Masters Seminar
CS 89191: Doctoral Seminar
Spring 2009
Doctoral Student Presentation:
Tile-based Parallel Coordinates with Interactive Transfer Functions
Jamal Alsakran
Parallel coordinates has been widely used in information visualization
applications and achieved a great success. However, visual clutter
will weaken or even diminish its ability when the data size
increases. In this paper, we first represent the parallel coordinates
display as a tile-based image, where the plotting area is divided into
rectangular tiles. Each tile stores an intersection density that
counts the total number of polylines intersect with that
tile. Consequently, the intersection density is mapped to optical
attributes, such as color and opacity, by interactive transfer
functions. The method visualizes the polylines efficiently and
informatively in accordance with the density distribution, and thus,
reduces visual cluttering and promotes knowledge discovery. We apply
the method on a real world data set, U.S. stock mutual fund data of
year 2006, to demonstrate its capability and success for conveying
perceptual information and assisting in financial analysis.