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| {{Quotation|Time dependent data is characterized by data elements being a function of time. In general, data takes the form | | {{Quotation|Time dependent data is characterized by data elements being a function of time. In general, data takes the form |
| :''d = f(t)'' | | :''d |
| ''For data defined at discrete time stamps t<sub>i</sub>, this relation can be represented as:''
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| :''D = {(t<sub>1</sub>, d<sub>1</sub>),( t<sub>2</sub>, d<sub>2</sub>), ..., (t<sub>n</sub>, d<sub>n</sub>)}''
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| :''where''
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| :''d<sub>i</sub> = f(t<sub>i</sub>)''|[Müller and Schumann, 2003]}}
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| Time-series are a part of the broader field of time-oriented data:
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| {{Quotation|Time series data is characterized by data elements being a function of time. In general, this data takes the following form:
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| :''D = {(t<sub>1</sub>, y<sub>1</sub>),( t<sub>2</sub>, y<sub>2</sub>), ..., (t<sub>n</sub>, y<sub>n</sub>)}''
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| :''with''
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| :''y<sub>i</sub> = f(t<sub>i</sub>)''|[Weber et al., 2001]}}
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| == Synonyms ==
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| *temporal data
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| *time-oriented data
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| *time-varying data
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| *time-dependent data
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| == References ==
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| *[Daassi et al., 2004] Chaouki Daassi, Laurence Nigay, and Marie-Christine Fauvet. Visualization Process of Temporal Data, ''Lecture Notes in Computer Science'', 3180, Springer-Verlag Heidelberg, 2004.
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| *[Jensen and Snodgrass, 1999] Christian S. Jensen and Richard T. Snodgrass. Temporal Data Management, ''IEEE Transactions on Knowledge and Data Engineering'', 11:36-44, 1999.
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| *[Müller and Schumann, 2003] W. Müller and H. S. Schumann. Visualization Methods for Time-dependent Data - an Overview, In ''Proceedings of Winter Simulation 2003'', New Orleans, USA, 2003
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| *[Weber et al., 2001] Marc Weber, Marc Alexa, and Wolfgang Müller. Visualizing Time-Series on Spirals, In ''Proceedings of the IEEE Symposium on Information Visualization 2001 (InfoVis 2001)'', p. 7-14, October 2001.
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| [[Category: Glossary]]
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Temporal data refers to data, where changes over time or temporal aspects play a central role or are of interest.
Definitions
Temporal data is data that varies over time.
[Jensen and Snodgrass, 1999]
A temporal data denotes the evolution of an object characteristic over a period of time.
[Daassi and Nigay, 2004]
{{Quotation|Time dependent data is characterized by data elements being a function of time. In general, data takes the form
- d