Creating a Single Data Point for Each Village and Week in R Data Frames Using ddply

Conditional Row Indexing in R: A Comparative Analysis of Three Methods

Filling Columns Based on Conditions Using sum() for Matches in R

Conditional Update of a DataFrame Based on Another Column: A Targeted Approach Using ifelse().

Understanding Conditional Logic with SQL IF Statements: A Deep Dive into `IF EXISTS`

Conditional Statement for Evaluating and Creating New Columns in Dataframes

Understanding IF...ELSE Statements in R

Mastering Conditional Statements in R: A Guide to if and ifelse

Determining State Transition Matrix for a Markov Chain Using R

Creating a New Variable Based on Multiple "OR" Conditions in R Using `%in%` Operator