Adding Conditional Columns with Letters in R Based on Hierarchical Conditions Using dplyr Library

Understanding and Correctly Declaring Encoding for Character Columns in R Data Frames: A Comprehensive Guide

How to Calculate Conditional Group Mean in R with Dplyr

Understanding How to Change Column Names in R Data Frames

Using `unnest` Function from Tidyr to Expand DataFrames in R

Renaming Columns in R: A Step-by-Step Guide Using the `rename()` Function

Expanding Rows in a Data.Frame Based on Column Values in R

Adding New Column to Pandas DataFrame Based on Multiple Conditions Using NumPy's np.select() Function

Understanding Time Series Data Analysis: A Comprehensive Guide

Conditional Assignment in R: Creating a New Column with an "if else" Structure