Flexibly restructure and aggregate data using just two functions: melt and 'dcast' (or 'acast').
copied from cf-staging / r-reshape2conda install conda-forge::r-reshape2
conda install conda-forge/label/cf201901::r-reshape2
conda install conda-forge/label/cf202003::r-reshape2
conda install conda-forge/label/gcc7::r-reshape2