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Swirl 1.1

Course video 43 of 45

Week 4 is all about the Course Project, producing a Shiny Application and reproducible pitch.

Développement de produits de données

Université Johns-Hopkins

Cours 9 de 10 dans Science des données Spécialisation

A data product is the production output from a statistical analysis. Data products automate complex analysis tasks or use technology to expand the utility of a data informed model, algorithm or inference. This course covers the basics of creating data products using Shiny, R packages, and interactive graphics. The course will focus on the statistical fundamentals of creating a data product that can be used to tell a story about data to a mass audience.

Visualiser le programme de cours

Compétences que vous apprendrez

Interactivity, Plotly, Web Application, R Programming

Enseigné par

Brian Caffo, PhD
Professor, Biostatistics
Jeff Leek, PhD
Associate Professor, Biostatistics
Roger D. Peng, PhD
Associate Professor, Biostatistics

Transcription

Hello, I'm Sean Cross and I'm going to show you

how to start writing your own Swirl courses and Swirl lessons with Swirlify.

If you're not familiar with Swirl,

it's an R package that turns the R console into an interactive learning environment.

Let me give you a short tour of Swirl in case you haven't used it before.

So let me load the Swirl package and

then I can just start up Swirl by using the swirl function.

And as you can see, the R console starts talking to me and

asking me some questions.

So you can call me Sean.

I don't want to.

I was working on a lesson before.

As you can see, I get a selection,

I get a couple options to pick a Swirl course to start, so

I'm going to pick R Programming, and then within that course I can pick a lesson.

I'm going to start the, first lesson, Basic Building Blocks.

So the R console starts displaying some text as I get into the Swirl lesson.

The console in Swirl wants me to

type in 5 + 7 and I did that correctly,

so I got the question right so we can move on to further questions.

Now Swirl wants me to assign the value of 5 + 7 to a variable x.

So I'm going to do the wrong things to show you what happens.

I'm going to assign 5 + 8.

And as you can see, it says, nice try,

I didn't get the question right, and it shows me a hint.

So I'm going to follow that hint's advice and type 5 + 7.

All right, so it's a short introduction to Swirl.

There are several different kinds of questions that

the R console can ask a student.

So I'm going to exit out of this lesson right now, and

I did that using the Escape key, by the way.

And, I'm going to show you how you can start writing your own Swirl lessons with

Swirlify.

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