> For the complete documentation index, see [llms.txt](https://ezel.rustic.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ezel.rustic.dev/grammar-of-graphics/what-is-gog.md).

# What is GoG

### Other GoG Libraries

These are all well-made libraries. They slightly differ in the api naming and the usage of arithmetic operators (+, \*). For example, Altair uses + for concatenation of subplots, while Algebra of Graphics uses + for merging layers.

R

* ggplot2

Python

* Altair
* Plotnine

Julia

* [Algebra of Graphics](https://github.com/JuliaPlots/AlgebraOfGraphics.jl)