How to Sample Rows with Two Observations per ID from a Data Frame in R

Subset Data in R: A Comprehensive Guide to Understanding Basics and Advanced Techniques

Subsetting Text between Vectors in R: A Step-by-Step Guide

Subsetting Quosures with dplyr's strip() Function in R

Filtering Rows in a DataFrame Where All Values Meet a Condition Using R

Finding Rows of a Data Frame Where Certain Columns Match Those of Another Using R's Merge Function

Rearranging Time Series Data for Efficient Analysis in R

Finding the Index and Value of Non-NA List Elements in R Lists Using Various Approaches

Passing Column Name as Parameter to data.table::setkey() When Some Columns Are Not in the Data.Table: col_name

Filtering Dataframes with dplyr: A Step-by-Step Guide in R