How to a) get the files needed for each chapter in class and b) how to follow along with each chapter/code through.
The files for this class will include the raw data, the scripts, and r markdown files.
There are a few options to download them:
Each chapter has a prompt to download the files associated with each one.
Hopefully, you’ve created a New Project on your computer in your
Documents folder called
learning-r or something like that. This will create a .rProj file and keep the working directory relative to that folder and all data and scripts should go in there.
Once you’ve set your working directory (with maybe
setwd()) then you can run these commands in your console to download the correct folders and data:
install.packages("usethis") # This is for chapter 2 files and folders usethis::use_course("https://github.com/r-journalism/learn-chapter-2/archive/master.zip")
These project files work because the working directory will be relative to the project/chapter folder and not to an absolute folder path. Double click the .rProj file in each project/chapter folder to open it in RStudio.
Each repo that begins with
learn-chapter-X has files and folders for each chapter we’re going through. You can clone or repo each one and open the .Rproj file in each of those folders to follow along.
Alternatively, you could create the files yourself from scratch with the correct folder structure. This is pretty tough for beginners but useful to really understand how project and folder structures work.
Each sub chapter has a .Rmd file that contains the scripted code for each walk through.
This is an R Markdown file, which we will explain in detail in chapter 6.
But for now, the important thing to understand is that it’s a mix of markdown text and R code.
The R code sections are indicated by the grayed out areas.
Each section can be executed with the green triangle button on the right.
If you get an error, it might be because you didn’t run a chunk of code above. This is essentially an R script broken up into pieces and separated by text. Code depends on code executing above it successfully.
Here’s how to run code above a current chunk:
Do as much manually as you can.
After you get the files and folders, open a new script file and write out the code written in each video and sub chapter code through. An R script of only the code for each section is also in each folder. Avoid using that unless you have to.
Avoid just running code chunks in R Markdown.
Avoid copying and pasting the code.
Avoid passively learning.
Manually typing out your code starts the muscle memory and problem solving training.
That being said, if you get stuck, use that code that I’ve provided however you want.
© Copyright 2018, Andrew Ba Tran
© Copyright 2018, Andrew Tran