Calculating Logarithmic Growth Rates and Grouping by Two Variables: A Comprehensive Guide with R

Determining Joint Occurrences of Row Values in a Data Table: Finding Co-occurring PRIM Values within a Given Time Frame

Identifying Missing Value Equality to Mean Within Group: A Statistical Approach

Removing Consecutive Zeros from Time Series in R: A Two-Method Approach

Applying the `apply` Function Over Character Vectors Inside `data.table`: A Flexible Solution for Data Manipulation

Automatically Determining and Converting Value Types in R Datasets Using Data Tables

How to Use Predict Function with Data.table and Linear Regression in R

Understanding Column Names and Dynamic Generation in Data Tables using R

Understanding the Basics of data.table in R: Mastering the .() group by Syntax with `as.numeric()`

Addressing Data.table Columns Based on Two grep() Commands in R