Calculating Time Between First and Last Event in SAS with Multiple Duplicates of ID

Using parameterized functions in dplyr: A flexible approach to data manipulation and analysis in R

Inserting Variable Number of Rows into a Dataframe Using dplyr

How to Subset an Index from a Pandas DataFrame Using Different Methods

Plotting Dates in Pandas with Line Connecting Duration Using Plotly's Timeline Function

Using the Apply Function in R: A Comprehensive Guide to Simplifying Data Analysis

Rearranging Data Frame for a Heat Map Plot in R: A Step-by-Step Guide Using ggplot2

Merging Dataframes Based on Multiple Conditions Using R and lubridate Package

How to Convert Integer Column to Date in R: A Step-by-Step Guide

Subset Dataframe Rows Based on Character Vector When "%in%" and "which" Are Not Working Correctly in R