Past studies - Subjective Judgment in Statistical Analysis: An Experimental Study (D.J. Finney; 1951) and Eye Fitting Straight Lines (Mosteller et. al. 1981) - conducted graphics experiments to evaluate human perception of fitting best fit lines by eye through a set of points or a given trend. We bring this experiment into the modern era with r2d3, following a similar process to NYTimes You Draw It pages. In previous research, we conducted a graphical experimental task using lineups and visual inference to evaluate whether our ability to perceptually notice differences in exponentially increasing trends is impacted by the choice of scale.
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Interactive data visualization is a powerful visual format that allows users to experience and explore data and their patterns. One of the most popular tools for creating interactive data visualizations is the D3.js library. The r2d3 package in R provides an entry point for R users to utilize the D3 graphing library to create beautiful interactive visualizations. In this talk I will introduce the basics of D3 and the functionality behind the r2d3 package, and demonstrate how R and ggplot2 users can start learning how to use D3 for interactive visualizations.
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