How to Install Older Packages in R: Workarounds for Obsolete Packages

Calculating Time Differences by Condition for Workers with Multiple Shifts Using dplyr and R

Removing Columns of Equal Variance after dplyr::group_by and before prcomp for PCA

Indexing a DataFrame with Two Vectors to Add Metadata Using Classical and Functional Programming Approaches in R

Handling Errors When Joining on Empty Dataframes: Best Practices for Data Manipulation

Calculating Time Elapsed Between Timestamps in data.table Using Conditions

Filling Missing Values in DataFrames Using R's Fill Function

Using rlang for Dynamic Column Modification with Variable Column Name

Data Merging and Filtering: A Comprehensive Guide to Removing Non-Matching Rows

Summary of dplyr: A Comprehensive Guide to Summary Over Combinations of Factors