Counting Entries in a Data Frame in R: A Comprehensive Guide

Counting Rows Per Group in R Data Frames Using Multiple Methods

Summarizing Multiple Columns with dplyr: A Categorical Version

Counting Number of Each Factor Grouping by Another Factor in a Dataset Using R.

Rolling Time Window with Distinct Count in Big SQL using DENSE_RANK() Function

Enumerating Successive Instances of Variable Combinations in R Using dplyr

Counting Frequencies of Values in Two Columns Using R