How do I run an R script from within RStudio's built-in R console?

Question

I'm assuming it's like Python's import statement, but I'd like a quick answer, since I'm in the middle of an introduction class right now.

This was the closest I got, but it didn't seem to match the question, as it shows how to run an R Script from the system CLI, not the blue RStudio > prompt:

Run an R-script from command line and store results in subdirectory

Answer 1

Short Answer using source() function

Once you download, install, and open the RStudio, you'll see a part in the lower left with blue greater than symbols >.

In the part of RStudio's GUI with the blue >, enter the following

> setwd('/folder/where/the/file/is/')
> source('file_name')`
...output, if any, appears below...

Example:

Let's assume I have a file at /home/myusername/prj/r/learn_r/insurance_data.r that I want to run.

I would start up RStudio, and enter the following in the little window it has labeled Console:

---

Annoyingly long answer with screenshots using source() function

Well, it turned out to be much simpler than I expected to run this from RStudio's built-in console. I was surprised that this had not already been asked about RStudio, before. If it has, I guess I'll have a burned question.

Anyway, a little trial and error showed me how to do this:

Yay, output has appeared below.

Make sure to set your working directory, first.

I did this as follows from inside RStudio 1.0.143 on my Ubuntu 16.04 LTS environment:

setwd("~/proj/r/learn_r")

Next, you can enter help(source), you can search for the syntax of the source() function, and you can just type it in to the RStudio console for a prompt:

Answer 2

If you want to run a specific line from the R script, put the cursor somewhere in the line and press command+enter (on other pc I think is ctrl+enter). If you want to run the whole script or some parts, select the part and command+enter.