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Abstract Details

Activity Number: 85
Type: Contributed
Date/Time: Sunday, July 29, 2012 : 4:00 PM to 5:50 PM
Sponsor: Section on Statistics and the Environment
Abstract - #306404
Title: Glyph-Maps for Visually Exploring Temporal Patterns in Climate Data and Models
Author(s): Charlotte Wickham*+ and Hadley Wickham and Heike Hofmann and Dianne H Cook
Companies: Oregon State University and Rice University and Iowa State University and Iowa State University
Address: Department of Statistics, Corvallis, OR, 97331, United States
Keywords:
Abstract:

Understanding the multiple aspects of climate data is a challenge. There are both spatial and temporal components to examine, and often multivariate dependencies. This paper proposes a new display for climate data: glyph-maps. Glyph-maps are a specialization of multivariate glyph plots; each spatial location is displayed with one glyph that represents the measurements recorded over time at that location. Glyph-maps allow the discovery of both local and global structure, with a particular focus on temporal relationships.

The instructions for computing and displaying glyph-maps are described, along with the design of reference frames, and the effects of different scaling of the data on perception of structure. The methods are developed for rectangularly gridded data, but with some clever processing, which is explained, it is possible get good glyph-maps of irregularly gridded data.


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