Calculating Weekly Differences in Purchase History for Each PAN ID and Brand ID

Line Plot with Multiple Lines Using Data from Excel in R

Accessing Data from CDATA Sections in XML Files using R

Plotting ACF Values for Linear Mixed Effects Models Using the nlme Package in R

Using ggplot to Summarize Mann Kendall Test Results in a Graph

Parsing PubMed Data with XPathApply: A Deep Dive into Handling Multiple Nodes

Counting Letters in All Permutations of Words in R

Using Loops to Modify Data Frames in R: A Deeper Dive into the For Loop

Calculating Averages Based on Column Values in R Using dplyr and Manual Multiplication

Run-Length Encoding for Vector Analysis: A Simplified Approach to Identify Consecutive Equal Numbers