Flexibly reshape data: a reboot of the reshape package
DescriptionReshape lets you flexibly restructure and aggregate data using just two functions: melt and cast. Reshape (hopefully) makes it easy to do what you have been struggling to do with tapply, by, aggregate, xtabs, apply and summarise. It is also useful for getting your data into the correct structure for lattice or ggplot plots.
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Install this software package
If the package is available for the distribution you are currently using on your computer then install the software by clicking on…Install r-cran-reshape2