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Visualization Image Gallery
Cell Size Indicates Variable Contribution
The University of North Carolina at Chapel Hill developed this treemap visualization using SAS JMP software to show that certain buildings and classes of buildings are responsible for more greenhouse gas emissions than others. Treemaps are not designed to convey numerical quantities; the intent is to show relative rankings. Treemaps can be more effective than pie charts and other forms of area charts that often do a poor job of classifying data points and communicating the relative differences of their values.
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Photograph by The University of North Carolina at Chapel Hill
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