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Vega-Lite: A Grammar of Interactive Graphics | IEEE Journals & Magazine | IEEE Xplore

Vega-Lite: A Grammar of Interactive Graphics


Abstract:

We present Vega-Lite, a high-level grammar that enables rapid specification of interactive data visualizations. Vega-Lite combines a traditional grammar of graphics, prov...Show More

Abstract:

We present Vega-Lite, a high-level grammar that enables rapid specification of interactive data visualizations. Vega-Lite combines a traditional grammar of graphics, providing visual encoding rules and a composition algebra for layered and multi-view displays, with a novel grammar of interaction. Users specify interactive semantics by composing selections. In Vega-Lite, a selection is an abstraction that defines input event processing, points of interest, and a predicate function for inclusion testing. Selections parameterize visual encodings by serving as input data, defining scale extents, or by driving conditional logic. The Vega-Lite compiler automatically synthesizes requisite data flow and event handling logic, which users can override for further customization. In contrast to existing reactive specifications, Vega-Lite selections decompose an interaction design into concise, enumerable semantic units. We evaluate Vega-Lite through a range of examples, demonstrating succinct specification of both customized interaction methods and common techniques such as panning, zooming, and linked selection.
Published in: IEEE Transactions on Visualization and Computer Graphics ( Volume: 23, Issue: 1, January 2017)
Page(s): 341 - 350
Date of Publication: 10 August 2016

ISSN Information:

PubMed ID: 27875150

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