Data Manipulation and Filtering in R: A Case Study on Multiplying Column Values within a Date Range While Replacing Old Values

Sorting Data via If Statement in R for Identifying Workout Numbers Based on Specific Conditions and Time Windows

Mutating Across Multiple Columns Based on a Condition in dplyr

Creating DataFrames by Conditions Using dplyr and R: A Step-by-Step Guide

Using "for", "if", and "else if" Functions to Create a New Variable in R: A Better Alternative Using max.col()

Understanding Consecutive Row Operations in Pandas DataFrames: A Comprehensive Guide

Creating Binary Variables for Working Hours and Morning Status Using R: A Step-by-Step Guide

Creating a Local Variable Based on Multiple Similar Variables in R

Combining ifelse Statements and For Loops in R for Efficient Acceptance Status Updates

Understanding Syntax Errors in VBA Code: Fixing and Preventing Common Issues