Tutorials

Learn to visualize your data like an expert with these practical how-tos for presentation, analysis, and understanding.

How to Make and Use Bar Charts in R

The chart type seems simple enough, but there sure are a lot of bad ones out there. Get yourself out of default mode.

Making an Interactive Map with Category Filters

Let readers focus on the regions they care about to make their own comparisons and conclusions.

Loading Data and Basic Formatting in R

It might not be sexy, but you have to load your data and get it in the right format before you can visualize it. Here are the basics, which might be all you need.

Choropleth Maps and Shapefiles in R

Fill those empty polygons with color, based on shapefile or external data.

Working with Map Projections and Shapefiles in R

No need to settle for the mapping defaults in R. Apply map projections to show geographic data in a way most suitable for your work.

How to Download and Use Online Data with Arduino

Before you can do anything with data, you have to get it into the application. Working with an Arduino is no different. Although the process is changes, if you're used to working with desktop software.

Mapping With Shapefiles in R – Getting Started

Geographic data is often available as a shapefile, and there's plenty of heavy software to get that data in a map. R is an open source option, and as a bonus, much of the work can be done in a few lines of code.

Moving Past Default R Charts

Customizing your charts doesn't have to be a time-intensive process. With just a teeny bit more effort, you can get something that fits your needs.

How to Make Interactive Linked Small Multiples

Small multiples are great, and the right interactions can make them even better. A primer and a how-to.

How to Make an Animated, Self-Sorting List

You have a list of things that can be ordered by different values. Let them sort themselves out.

How to Make Dot Density Maps in R

Choropleth maps are useful to show values for areas on a map, but they can be limited. In contrast, dot density maps are sometimes better for showing distributions within regions.

How to Make an Interactive Treemap

Treemaps are useful to view and explore hierarchical data. Interaction can help you look at the data in greater detail.

How to Make Gridded Maps

For when your geographic data is evenly spread rather than aggregated by government boundaries.

Downloading Your Email Metadata

Email provides a window into who we interact with and what we do. This tutorial describes how to get that data in the format you want.

Detecting and Plotting Sequence Changes

Change detection for a time series can be tricky, but guess what, there's an R package for that. Then show the results in a custom plot.