“They are like the real thing. Dataquest shows you exactly what you need to learn and then helps you apply it.”

Eddie Kirkland

Principal Data Scientist @ICF

Course overview

First, you’ll learn techniques like string indexing and concatenation to interpret, process, and analyze text data. Next, you’ll leverage the lubridate package to overcome the unique difficulties of working with dates and times in R. Finally, you’ll learn how to vectorize a function using the map function.

Best of all, you’ll learn by doing — you’ll practice and get feedback directly in the browser. At the end of the course, you’ll work on the second part of a guided project that will enable you to apply control flow loops and functions to create a reusable data workflow.

Key skills

  • Interpreting, processing, and analyzing text data
  • Working with strings, dates, and times in R
  • Employing the map function from the purrr package
  • Completing an in-depth data analysis project workflow using R

Course outline

Specialized Data Processing in R [4 lessons]

String Manipulation in R: Fundamentals 1h

Lesson Objectives
  • Manipulate string data for data analysis
  • Identify typical string manipulation operations
  • Define a regular expression

Date and Time Manipulation in R: Fundamentals 1h

Lesson Objectives
  • Format dates and times in R
  • Employ the lubridate library with dates and times

The Map Function in R 1h

Lesson Objectives
  • Define the map function
  • Employ the multiple input variations of the map functions
  • Employ the type-specific variations of the map functions
  • Define a list-column

Projects in this course

Guided Project: Creating An Efficient Data Analysis Workflow, Part 2

For this project, you’ll be a data analyst at a book company using R to clean sales data and analyze if a new program successfully boosted purchases and review sentiment.

The Dataquest guarantee


Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.


We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Master skills faster with Dataquest

Go from zero to job-ready

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Showcase your path certification

Impress employers by completing a capstone project and certifying it with an expert review.

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Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”


Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”


Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”

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