I want to understand better how ggplot2 is implemented. I have read through ggplot2-book.org and use ggplot2 for a few years. Any suggestions about how to read the ggplot2 source code?
The whole sourcecode can be found in the github repository here: https://github.com/tidyverse/ggplot2/
You can also write the name of a function (without the parentheses) an press enter in the command line of press F2 over a function.
Another good resource is the "Extending ggplot2" vignette (https://cran.r-project.org/web/packages/ggplot2/vignettes/extending-ggplot2.html) which guides you through some aspects of ggplot2's internal workings.
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