Reshaping Data with the<b>reshape</b>Package
Hadley Wickham
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.
Topics & Concepts
R packageCastingComputer scienceFrame (networking)Advice (programming)Melting temperatureData miningComputational scienceMaterials scienceProgramming languageMetallurgyComposite materialTelecommunicationsData Analysis with R