Reshaping data with the reshape package

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Authors Hadley Wickham
Journal/Conference Name Journal of Statistical Software
Paper Category
Paper 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.
Date of publication 2007
Code Programming Language R
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