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arXiv · 2507.04236

AnnoGram: An Annotative Grammar of Graphics Extension

Md Dilshadur Rahman·Md Rahat-uz- Zaman·Andrew McNutt·Paul Rosen
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Abstract

Annotations are central to effective data communication, yet most visualization tools treat them as secondary constructs -- manually defined, difficult to reuse, and loosely coupled to the underlying visualization grammar. We propose a declarative extension to Wilkinson's Grammar of Graphics that reifies annotations as first-class design elements, enabling structured specification of annotation targets, types, and positioning strategies. To demonstrate the utility of our approach, we develop a prototype extension called Vega-Lite Annotation. Through comparison with eight existing tools, we show that our approach enhances expressiveness, reduces authoring effort, and enables portable, semantically integrated annotation workflows.

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Md Dilshadur Rahman, Md Rahat-uz- Zaman, Andrew McNutt, Paul Rosen. 2025-07-06. AnnoGram: An Annotative Grammar of Graphics Extension. https://arxiv.org/abs/2507.04236

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