Resolving mirt simdata Errors: Understanding Probabilities and Item Response Models

Mastering Data Type Conversion with dplyr: A Solution to a Common Issue in R

Substituting Labels with First Characters Using Regular Expressions in R

Understanding Unlist() in R: A Deep Dive into Vector Creation and Observation Counts

Creating Custom Heat Maps with R: A Step-by-Step Guide

Extracting Variable Names from Modified Columns in R Data Frames with Indexing

Renaming Columns in R DataFrames: A Step-by-Step Guide

Using ggplot2 to Plot Histograms: Two Methods for Calculating Cumulative Sums in R

Calculating Spatial Distances in R using the sf Package for Accurate Results in Meters

Subsetting Data by Conjunction of Two Columns in R Using dplyr