Expanding a Dataset by Two Variables Using Tidyr's expand Function

Find Closest Date in One DataFrame to a Set of Dates in Another DataFrame and Calculating Time Difference Between These Two Dates

Masking Missing Values in Pandas: A Step-by-Step Guide to Imputing Values and Setting Flags

Checking if a Data Frame Contains a Value Defined in Another Data Frame Using R's Apply Function and Loop Approach

Merging a List of Data Frames in R: A Solution Using rbindlist and .id Argument

Handling Duplicate Values in Columns and Assigning Values to Other Columns Using Dplyr

Adding a Row Between Each Row in R Data Frames Using Various Methods

How to Use R's `read.table()` Function for Efficiently Reading Files

Filtering DataFrames in R Using Base R and Dplyr

Detecting Outliers Using the Interquartile Range Method in R