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Johns Hopkins University

Building Data Visualization Tools

Johns Hopkins University via Coursera


The data science revolution has produced reams of new data from a wide variety of new sources. These new datasets are being used to answer new questions in way never before conceived. Visualization remains one of the most powerful ways draw conclusions from data, but the influx of new data types requires the development of new visualization techniques and building blocks. This course provides you with the skills for creating those new visualization building blocks. We focus on the ggplot2 framework and describe how to use and extend the system to suit the specific needs of your organization or team. Upon completing this course, learners will be able to build the tools needed to visualize a wide variety of data types and will have the fundamentals needed to address new data types as they come about.


  • Welcome to Building Data Visualization Tools
    • Before we get started, we'll take a quick overview of the course.
  • Plotting with ggplot2
    • Now, we'll dive into creating and customizing ggplot2 plots.
  • Mapping and interactive plots
    • Mapping is a critical part of many data visualizations. During this module, we'll teach you how to create simple and dynamic maps with ggplot2 and ggmap, how to overlay data, and how to create chloropleth maps of US counties.
  • The grid Package
    • The grid package in R implements the primitive graphical functions that underly the ggplot2 plotting system. In this module, you'll learn how to work with grid to build graphics.
  • Building New Graphical Elements
    • Building and modifying a theme in ggplot2 is a key feature of the ggplot2 package and system for building data graphics. In this final module, you'll learn to build a new theme and modifying existing themes with new features.

Taught by

Roger D. Peng, PhD and Brooke Anderson


4 rating at Coursera based on 156 ratings

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