Multivariate cyclical data visualization using radial visual rhythms: A case study in phenology analysis

Author(s)

Mariano, Greice C. ^[1] ; Staggemeier, Vanessa G. ^[2] ; Cerdeira Morellato, Leonor Patricia ^[2] ; Torres, Ricardo da S. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Comp, Campinas, SP - Brazil

^[2] UNESP Sao Paulo State Univ, Inst Biosci, Dept Bot, Phenol Lab, Rio Claro, SP - Brazil

• Document type: Journal article
• Source: ECOLOGICAL INFORMATICS; v. 46, p. 19-35, JUL 2018.
• Web of Science Citations: 0

Abstract

Phenology is a traditional science that investigates the periodic phenomena of plants and animals and their relations to environmental conditions. Typically plant phenological studies are based on observations made by phenology experts in the field over time and the correlation with climate data collected by weather sensors. Although within the visualization community several approaches have been proposed for visualizing data that vary over time, many of them have a specific purpose and cannot be applied to phenology studies. Besides that, phenology experts increasingly need tools for managing appropriately long-term time series with many variables of different data types, as well as to identify cyclical temporal patterns. In this work, we propose a novel approach to visualize phenological data by combining radial visual structures along with visual rhythms. Radial visual structures are used to provide contextual insights regarding cyclical phenomena, while the visual rhythm encoding is used to summarize long-term time series into compact representations. We developed, evaluate, and validate our proposal with phenology experts using plant phenology direct observational data both at individuals and species levels. (AU)

• FAPESP's process: 14/50715-9 - Characterizing and predicting biomass production in sugarcane and eucalyptus plantations in Brazil
• Grantee: Rubens Augusto Camargo Lamparelli
• Support type: Research Grants - Research Partnership for Technological Innovation - PITE
• FAPESP's process: 13/50169-1 - Towards an understanding of tipping points within tropical South American biomes
• Grantee: Ricardo da Silva Torres
• Support type: Research Grants - Research Partnership for Technological Innovation - PITE
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• Grantee: Leonor Patricia Cerdeira Morellato
• Support type: Research Grants - Research Partnership for Technological Innovation - PITE
• FAPESP's process: 14/12236-1 - AnImaLS: Annotation of Images in Large Scale: what can machines and specialists learn from interaction?
• Grantee: Alexandre Xavier Falcão
• Support type: Research Projects - Thematic Grants
• FAPESP's process: 17/20945-0 - Multi-user equipment approved in great 16/50250-1: local positioning system
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• Support type: Multi-user Equipment Program
• FAPESP's process: 16/50250-1 - The secret of playing football: Brazil versus the Netherlands
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• Support type: Research Projects - Thematic Grants
• FAPESP's process: 09/18438-7 - Large-scale classification and retrieval for complex data
• Grantee: Ricardo da Silva Torres
• Support type: Regular Research Grants
• FAPESP's process: 13/50155-0 - Combining new technologies to monitor phenology from leaves to ecosystems
• Grantee: Leonor Patricia Cerdeira Morellato
• Support type: Research Program on Global Climate Change - University-Industry Cooperative Research (PITE)
• FAPESP's process: 15/24494-8 - Communications and processing of big data in cloud and fog computing
• Grantee: Nelson Luis Saldanha da Fonseca
• Support type: Research Projects - Thematic Grants