Applying Functions to Specific Columns in a data.table: A Powerful Approach to Data Manipulation

Creating New Column with Conditional Value by ID in R Using data.table Package

Finding the Nearest Date in R using Data Tables and VLOOKUP

Subset of Data.table Excluding Specific Columns Using Various Methods in R

Resolving Unused Argument Errors While Grouping within Functions in R

Removing Rows by Reference in data.table for Efficient Data Manipulation in R

Writing Data to an Existing File without Overwriting: Append by Columns using fwrite() and Alternative Approaches for Data Integrity

Calculating Relative Row Index Based on a Variable Value in R Using Data.table and dplyr

Overcoming Binary Operator Errors in Subsetted Data.tables: 4 Alternative Solutions

Handling Long Column Names with Symbols in R's Data Table Package