collapse::collapse_and_dplyr | collapse and dplyr: Fast (weighted) Aggregations, Transformations and Time-Series/Panel Computations in a dplyr Workflow | HTML | source | R code | |
collapse::collapse_and_plm | collapse and plm: Fast Transformation and Exploration of Panel Data | HTML | source | R code | |
collapse::collapse_intro | Introduction to collapse: Advanced and Fast Data Transformation in R | HTML | source | R code |