What Is A Tree Map?

Wednesday, May 17th 2023. | Sample Templates
Chapter 39 Without Borders Tree Map
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What is a Tree Map?

Tree maps are an incredibly useful tool for both data analysis and visualization. They are graphical representations of hierarchical data structures in which individual data points are nested within their respective categories. A tree map, or treemap, is a method for displaying hierarchical data using nested rectangles. The rectangles are arranged in a way that the area of each rectangle is proportional to the value of the data it represents. Tree maps are a great way to quickly and easily visualize large, complex datasets.

What are the Benefits of Tree Maps?

Tree maps offer several benefits over traditional bar charts, pie charts, and other forms of data visualization. They are very effective at visualizing large amounts of data and can be used to quickly identify patterns and trends. Additionally, tree maps are easy to interpret and understand, making them a great choice for presenting data to a wide audience. Finally, tree maps are interactive, allowing the user to zoom in and out to explore specific data points or view the entire data set in one view.

How to Create a Tree Map

Creating a tree map is a straightforward process. First, the data to be visualized must be organized into a hierarchy. This could be a product or service category, geographic region, or any other type of data with a hierarchical structure. Once the data has been organized, it can be entered into a tree map software program. This will automatically generate a treemap with the data points represented as rectangles. As the user zooms in and out, the rectangles will expand and contract, allowing the user to explore the data in more detail.

Example of Tree Map

Below is an example of a tree map using data from the US Census Bureau. This example shows the population of each state in the US in 2020. Each rectangle represents a state, and the size of the rectangle is proportional to the population of that state. By zooming in, the user can see the population of each state in more detail.

Tree Map Example


In conclusion, tree maps are an effective method of data visualization and analysis. They are easy to understand, can handle large amounts of data, and are interactive. By using tree maps, users can quickly identify patterns and trends in their data and make better-informed decisions.