Calculating Aggregates by Multiple Criteria in R Using dplyr

Writing Per-Variable Counts with Data.tables in R: Efficient CSV File Output Using l_ply Function

Understanding How to Group and Remove Duplicate Values from Sparse DataFrames in R

Efficiently Merge Data Frames Using R's dplyr Library for Age Group Assignment

Understanding Consecutive Numbering of Data.Frame Segments: A Practical Guide with `plyr` and `dplyr` Libraries

Resolving Errors with dplyr: Understanding Conflicts and Renaming Functions for Efficient Data Manipulation

Using Dplyr to Generate Values Satisfying Multiple Conditions in R