Skip to contents

typeR

CRAN status CRAN downloads

typeR is an R package that simulates typing effects on R script files, making it ideal for live coding presentations, interactive teaching, or creating animations. It supports R scripts, R Markdown, and Quarto presentations (including reveal.js slides).

Installation 

# Install from CRAN
install.packages("typeR")

# Or get development version

# Install devtools if you don't already have it
install.packages("devtools")

devtools::install_github("Fgazzelloni/typeR")

Usage

Basic R Scripts

Here’s an example of how to use the typeR package:

library(typeR)

# Create a test script for demonstration
writeLines(c(
  "# Testing typeR",
  "x <- 1:10",
  "y <- x*2",
  "plot(x, y)"
), "test_script.R")

# Simulate typing the script (display only)
typeR("test_script.R", delay = 0.05)

# Type AND execute the code
typeRun("test_script.R", delay = 0.05)

Quarto Presentations

Perfect for live coding in presentations! Works seamlessly with Quarto reveal.js slides:

# Use the included example presentation
demo_file <- system.file("examples/demo-presentation.qmd", package = "typeR")
typeRun(demo_file)

# Or create your own Quarto presentation
typeRun("my-presentation.qmd", delay = 0.08, max_print = 5)

See the Quarto Presentations vignette for detailed examples and best practices.

Features

  • Typing Animation: Simulates realistic typing of R code character by character
  • Live Execution: typeRun() executes code in real-time as it types
  • Multiple Formats: Supports .R, .Rmd, and .qmd (Quarto) files
  • Quarto Presentations: Perfect for reveal.js slides and other Quarto formats
  • Interactive Control: Press ESC to pause, then resume or stop
  • Smart Output: Handles plots, models, and long outputs intelligently
  • Customizable Speed: Adjust delay and jitter for natural typing rhythm
  • Teaching-Friendly: Ideal for courses, workshops, and conference presentations

Contributing

Contributions are welcome! Please open an issue or submit a pull request.

License

This package is licensed under the MIT License. See the LICENSE file for details.