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The Making of Continuous Colormaps.

Pascal Nardini, Min Chen, Francesca Samsel

IEEE Transactions on Visualization and Computer Graphics

|December 25, 2019

Summary

Rainbow colormaps persist despite critiques due to a lack of specialized tools. This study introduces the Charting Continuous Colormaps (CCC) Tool, enabling users to create application-specific colormaps for better data visualization.

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Area of Science:

Data Visualization
Scientific Computing

Background:

Continuous colormaps are essential for visualizations like heat-maps and flow plots.
Rainbow colormaps remain prevalent despite known limitations, largely due to a lack of user-friendly creation tools.

Purpose of the Study:

To introduce a web-based software system, CCC-Tool, for creating, editing, and analyzing application-specific continuous colormaps.
To address the need for tools that allow users to design colormaps encoding specific application semantics.

Main Methods:

Development of the Charting Continuous Colormaps (CCC) Tool, a web-based system.
Introduction of the "colormap specification (CMS)" concept to define color mapping schemes.
Provision of utilities for constructing CMS, examining quality attributes, and exporting colormaps.

Main Results:

The CCC-Tool facilitates the creation and analysis of custom continuous colormaps.
The tool supports the design of colormaps with varying complexity and specific semantic encoding.
Case studies demonstrate the tool's utility for domain scientists and visualization experts.

Conclusions:

The CCC-Tool empowers users to move beyond generic colormaps and design application-specific ones.
This system aids in creating semantically rich visualizations, improving data interpretation.
The tool addresses a critical gap in visualization software by enabling tailored colormap design.