Removing Columns of Equal Variance after dplyr::group_by and before prcomp for PCA

Understanding dplyr Filter: How to Exclude Data Using Complement Logical Conditions

Splitting and Transforming Wide-Form Data into Long-Form with R's Tidyverse

Using Variables from tidy Select within Paste: A Flexible Approach to Combining Strings and Vectors

Estimating Lag Between Time Series Data in R for COVID-19 Vaccine Doses Administered

Replacing Missing Values in Numeric Columns Using dplyr’s mutate_if Function

Data Merging and Filtering: A Comprehensive Guide to Removing Non-Matching Rows

Calculating Matrix Determinant for Each Data Frame Row in R: A Comprehensive Guide

Here is the complete code:

Creating Dynamic Column Names Within Dplyr Functions: A Comparative Approach