Counting Fridays and Mondays in R Using lubridate Package

Extracting Specific Columns from a Data Frame as Vectors: A Comprehensive Guide to Vectorization, Function Composition, and Beyond

Understanding Magrittr Pipe Operator and Task Callbacks: Mastering Custom Debug and Development Features in R

Creating Columns in a Data Frame from a Character Vector Using R Functions and Matrix Subset

Creating Multiple Variables in a For Loop Increasing Each One by 3 Months in R Using lubridate Package

Recoding a Range of String Values in a Factor Using mutate in dplyr: A Practical Guide to Handling Numeric Conversion Without Typing Out Each Value Manually

Understanding and Resolving the `str_replace_all` Function Error in R: A Step-by-Step Guide to Mastering Regular Expressions

Finding Pairs of Duplicate Columns in R Using Various Methods and Techniques

Here is the code with explanations and improvements.

Correlation Analysis Between Monthly Precipitation and Tree Ring Data: A Step-by-Step Guide