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  3. Plotly Tutorial: Plotly and R
  • 1

    Getting Started With Plotly

    This chapter will introduce you to plotly and how you can use R and plotly together to create stunning data visualizations.

  • 2

    Getting Fancy With Plotly

    In this chapter you will bring your plotly skills to the next level. Learn how to use plotly to create heatmaps and 3D surface plots, a choropleth map, and how to add slides. There is even a short meet and greet with ggplotly, the interactive sister of ggplot2.

Initializing

Exercise

An interactive airport map

Ever wonder how some data scientists make these beautiful geographical maps? This exercise shows you how they do it.

A map provides an easy way to visualize how a measurement varies across a geographic area or the level of variability within a region. An example of such a map is provided on the right. Run the first part of the code and you will see a map of the USA showing the most trafficked airports. Hover over each block to see the name of the airport, city, state and number of arrivals.

Let's highlight the most important pieces in the code:

  • To the lat and lon arguments your provide information regarding the latitude and longitude of the airports locations.
  • With add_markers() you can add trace(s) to a plotly visualization
  • In geo you set the reference between the provided geospatial coordinates and a geographic map (e.g. usa)
  • In layout() you modify the layout of a plotly visualization. For example, with title you tell plotly what title you want to appear above your plot.

Instructions

100 XP
  • Based on the code of the "Most trafficked US airports map", create a world map that maps all commercial airports in the world (airports).
  • For a map of the world, the scope is the world.
  • Each airport should be represented by a circle and on hover you should see the AirportID, City and Country of that aiport.
  • The color of the airport circle should depend on the country.