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Full-Text Articles in Computer Sciences

An Evaluation-Guided Approach For Effective Data Visualization On Tablets, Peter S. Games, Alark Joshi Jan 2015

An Evaluation-Guided Approach For Effective Data Visualization On Tablets, Peter S. Games, Alark Joshi

Computer Science

There is a rising trend of data analysis and visualization tasks being performed on a tablet device. Apps with interactive data visualization capabilities are available for a wide variety of domains. We investigate whether users grasp how to effectively interpret and interact with visualizations. We conducted a detailed user evaluation to study the abilities of individuals with respect to analyzing data on a tablet through an interactive visualization app. Based upon the results of the user evaluation, we find that most subjects performed well at understanding and interacting with simple visualizations, specifically tables and line charts. A majority of the …


Visualization Of Off-Screen Data On Tablets Using Context-Providing Bar Graphs And Scatter Plots, Peter S. Games, Alark Joshi Jan 2013

Visualization Of Off-Screen Data On Tablets Using Context-Providing Bar Graphs And Scatter Plots, Peter S. Games, Alark Joshi

Computer Science

Visualizing data on tablets is challenging due to the relatively small screen size and limited user interaction capabilities. Standard data visualization apps provide support for pinch-and-zoom and scrolling operations, but do not provide context for data that is off-screen. When exploring data on tablets, the user must be able to focus on a region of interest and quickly find interesting patterns in the data. We present visualization techniques that facilitate seamless interaction with the region of interest on a tablet using context-providing bar graphs and scatter plots. Through aggregation, fisheye-style, and overview+detail representations, we provide context to the users as …