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Reshaping Data with the reshape Package

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  • Wickham, Hadley

Abstract

This paper presents the reshape package for R, which provides a common framework for many types of data reshaping and aggregation. It uses a paradigm of 'melting' and 'casting', where the data are 'melted' into a form which distinguishes measured and identifying variables, and then 'cast' into a new shape, whether it be a data frame, list, or high dimensional array. The paper includes an introduction to the conceptual framework, practical advice for melting and casting, and a case study.

Suggested Citation

  • Wickham, Hadley, 2007. "Reshaping Data with the reshape Package," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 21(i12).
    • Handle: RePEc:jss:jstsof:v:021:i12
    DOI: http://hdl.handle.net/10.18637/jss.v021.i12
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