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

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

Splits a Pandas DataFrame into Sub-Dataframes Based on Pattern

Removing Rows by Reference in data.table for Efficient Data Manipulation in R

Creating a Shiny App to Select Data from an Existing DataFrame

Manipulating a Subset of a Column in DataFrame Using Expression

Accessing Nested Lists in R: A Deep Dive

Creating a Column 'min_value' in a DataFrame Using Pandas GroupBy and Apply Functions

Filtering and Subsetting a Data Frame in R Based on Specific Character Positions

Subsetting a Repetitive Indexed Dataframe Using Values from a Non-Repetitive but Similarly Indexed Smaller Dataframe in R with Base R and dplyr Libraries