# Narvis: Authoring Narrative Slideshows for Introducing Data Visualization Designs

## TL;DR

Narvis is a specialized slideshow tool designed to help data visualization experts create tutorials that effectively introduce complex visual designs to non-expert audiences, enhancing understanding and learning.

## Contribution

The paper introduces Narvis, a novel authoring tool tailored for explaining data visualizations to non-experts, with automatic component detection and structured slideshow creation.

## Key findings

- Narvis improves the efficiency of creating visualization tutorials.
- Users find Narvis helpful for organizing and explaining complex visual components.
- Preliminary evaluations suggest Narvis enhances understanding of data visualizations.

## Abstract

Visual designs can be complex in modern data visualization systems, which poses special challenges for explaining them to the non-experts. However, few if any presentation tools are tailored for this purpose. In this study, we present Narvis, a slideshow authoring tool designed for introducing data visualizations to non-experts. Narvis targets two types of end-users: teachers, experts in data visualization who produce tutorials for explaining a data visualization, and students, non-experts who try to understand visualization designs through tutorials. We present an analysis of requirements through close discussions with the two types of end-users. The resulting considerations guide the design and implementation of Narvis. Additionally, to help teachers better organize their introduction slideshows, we specify a data visualization as a hierarchical combination of components, which are automatically detected and extracted by Narvis. The teachers craft an introduction slideshow through first organizing these components, and then explaining them sequentially. A series of templates are provided for adding annotations and animations to improve efficiency during the authoring process. We evaluate Narvis through a qualitative analysis of the authoring experience, and a preliminary evaluation of the generated slideshows.