Thread by @WeAreRLadies

Now that you know how a general package structure looks like, we can start building a package 👩🏼‍💻

#RStudio is great, just follow these steps: Select "File", "New Project...", "New Directory" and select "R Package". You can now give your R package a meaningful name, select a path and hit "Create project".

You're now ready to go! Once executed, you have a fully functional package structure in your #Rproject (that we already discussed) 😊 Now it's time to move your function to your "R/" folder and populate it!

Let's do this with our make_sum() function. We add a new file called "make_sum.R" in our "R/" folder and copy-paste the code from make_sum. You already have very first function that lives in your package 🤩 Calling now devtools::load_all() allows us to use the function

This is the very beginning of a package - and also what the GIF shows. There is an R file called "make_sum.R" with the function code to calculate the sum. We run "devtools::load_all()" and call "make_sum(1,3)" and get our result ("4")

📑 If you want a detailed step-by-step guide how to further populate your package (unit tests, change the DESCRIPTION, ...) and much more, @d_hammers and I wrote a blog post about our experience when building our package #overviewR: bit.ly/r-package-deve… #rstats

@d_hammers (and it also comes with a checklist that I always use when I update our package and before sending it to #CRAN)

@d_hammers 👩🏼‍🏫 I also collected these steps to develop your package (and more) in my talk at @CorrelAid's CorrelCon last year: bit.ly/pkg-development