Browsing by Author "Fanea, Elena"
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- ItemOpen AccessEstablishing graphical and formal relationships between visualizations of multi-dimensional data(2006) Fanea, Elena; Carpendale, Sheelagh
- ItemOpen AccessAn Interactive 3D Integration of Parallel Coordinates and Star Glyphs(2005-04-29) Fanea, Elena; Carpendale, Sheelagh; Isenberg, TobiasParallel Coordinates are a powerful method for visualizing multidimensional data, however, with large data sets they can become cluttered and difficult to read. On the other hand, a Star Glyph can be used to display either the attributes of a data item or the values across all items for a single attribute. Star Glyphs may readily provide a quick impression; however, since the full data set will require multiple glyphs overall readings are more difficult. We present an interactive integration of the visual representations of Parallel Coordinates and Star Glyphs that utilizes the advantages of both representations to offset the disadvantages they have separately. We discuss the role of uniform and stepped color scales in the visual comparison of non-adjacent items and Star Glyphs. Our visualization provides capabilities for focus-in-context exploration of the data using two types of lenses, and interactions specific to the 3D space.
- ItemOpen AccessA Linguistic Formalism for Specifying Visual Representations(2005-04-29) Fanea, Elena; Carpendale, SheelaghWith the proliferation of access to digital media it is becoming increasingly common for people to present information visually. This has led to a myriad of new types of visual representations that frequently come into existence without an associated formalism. It is often difficult to retroactively fit a given formalism to an existing visual representation. We present a formalism that provides us with tools capable of describing visual representations. Using an analogy to natural languages, we build an alphabet composed of two types of ordered letters. With these letters we can develop several languages whose grammar is described by their morphology and syntax. Each language thus defined is capable of describing a family of visual representations. We illustrate this capability by specifying the morphology and syntax necessary to describe two different visual representations of multidimensional data, parallel coordinates and glyphs.