webR with Quarto HTML Standalone Document Proof of Concept

Experiments with an Interactive Quarto Document using webR v0.1.0

Background

This is not my work. Forked from and go there to see how this works James J Balamuta: https://github.com/coatless-r-n-d/webR-quarto-demos

This was created by JJB to explore how WebR can be embedded in a Quarto Document for the purposes of teaching R.

Setup

The yaml includes this. Note the webr-setup.html and _webr-setup.qmd` files.

---
title: "the title"
engine: knitr
execute:
  echo: true
  error: true
embed-resources: true
format:
    html: 
      toc: true
      include-in-header: webr-setup.html
editor: source
---

{{< include _webr-setup.qmd >}}

Calling WebR

Use {webr} rather than {r} for your code.

Linear Regression

We’ll first start with the WebR team’s demo example or the statistician way of saying, “Hello world!”… Aka linear regression:

Retrieving prior objects

Each WebR cell appears to be connected to each other. Thus, we can access the fit outcome:

Mixing active and non-active R code

Summarize Data

Glancing at data frames yields:

Errors and Warnings

Base graphics

Graphing with base R

More advanced base R graphing…

ggplot2 Graphics

There is an extra step of installing packages that are not part of the base.

CLICK RUN AND WAIT LIKE 1 MINUTE. When you see output, it means it is loaded. Be patient.

Now we can use ggplot2 in the qmd.