Selecting Rows with Common id_name Values Across Multiple Groups in a Grouped Data Frame

Change Entry Values in Certain Variables to NA while Preserving Rest of Data

How to Mutate Values Within a Tibble in R Using left_join()

Performance of Row-Wise Operations on Partially Similar Columns Using Tidyverse

R Code Modifications for Splitting Dataset Based on Depth Column

Performing Interval Left Joins Among Multiple DataFrames in R

Counting Stages in R: A Step-by-Step Guide

Combining Series of Columns in R: A Step-by-Step Guide Using lapply, paste0, and rename_all

Separating Categorical Variables in R Using separate()

Creating Conditional Variables in R: A Step-by-Step Guide for Data Analysis and Manipulation