ggpal2

The purpose of {ggpal2} is to have an LLM assistant specifically for ggplot2. This is an extension of the {chores} library which uses {ellmer}. This way you can specify which LLM you would like to use for this task.

ggpal2 currently has one pal called “ggplot2”. The {chores} is a replacement assistant, meaning you highlight code or text and the pal should be able to replace with a ggplot2.

ggpal2 is currently prompt engineered to help with three different methods:

• highlighting a non-ggplot2 plot, replacing with ggplot2
• highlighting a chunk of text explaining a plot, replacing with ggplot2
• highlighting a ggplot2, which will edit in-place, cleaning syntax and recommending color-blind friendly colors

Installation

You can install the development version of ggpal2 like so:

# devtools::install_github("frankiethull/ggpal2")
install.packages("ggpal2", repos = c('https://frankiethull.r-universe.dev', 'https://cloud.r-project.org'))

local LLM

If interested in using a local LLM, set up your .Rprofile (usethis::edit_r_profile()) with the following snippet & restart your session:

options(
  .chores_chat = ellmer::chat_ollama(model = "phi4:latest")
)

where “phi4” is a model that can be pulled for use with locally installed ollama.

cloud LLM

If interested in using a cloud hosted LLM, set up your .Rprofile with a cloud hosted chat_* snippet, usethis::edit_r_environ() to set the API key, GEMINI_API_KEY="my_api_key" in this case, then restart your session:

options(
  .chores_chat = ellmer::chat_google_gemini(model = "gemini-2.5-flash")
)

Finally, run the ggplot2 chore with Ctrl+Alt+C