# Tutorials

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

#### 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.

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.

#### How to Make Smoothed Density Maps in R

Too many points to plot often means obscured patterns in the clutter. Density maps offer a smooth alternative.

#### How to Read and Use Histograms in R

The chart type often goes overlooked because people don't understand them. Maybe this will help.

#### How to Map Geographic Paths in R

As people and things move through a place, it can be useful to see their connected paths instead of just individual points.

#### The Baseline and Working with Time Series in R

A big part of statistics is comparisons, and perhaps more importantly, to figure out what to compare things to. Perspective changes with the baseline.

#### How to Display Text in R

Text can provide much needed context to traditional visual cues and can be used as a visual cue itself in some cases.

#### Working with Line Maps, the Google Places API, and R

A frequent challenge of visualization is behind the scenes, to get the data and to mold it into the format you need. Do that. Then map.

#### How to Make a Connected Scatter Plot

The combination of a time series chart and a scatter plot lets you compare two variables along with temporal changes.

#### Small Maps and Grids

Maybe you want to make spatial comparisons over time or across categories. Organized small maps might do the trick.

#### How to Make Slopegraphs in R

Also known as specialized or custom line charts. Figure out how to draw lines with the right spacing and pointed in the right direction, and you've got your slopegraphs.

#### Small Multiples in R

Make a lot of charts at once, line them up in a grid, and you can make quick comparisons across several categories.

#### How to Make an Animated Growth Map in R

Although time series plots and small multiples can go a long way, animation can make your data feel more real and relatable. Here is how to do it in R via the animated GIF route.