Sankey charts are a popular type of visualization used to show the flow of data or substances between different entities. They are named after the British engineer and statistician H. Sankey, who developed the technique in the late 19th century. Sankey charts are useful for understanding the relationships between different variables and can be used to show the direction and magnitude of a flow.

Creating a Sankey Chart

Sankey charts can be created using a variety of software tools such as Excel, Python, or online Sankey chart generators. Here’s an example of how to create a Sankey chart using Excel:

1. Insert a Donut Chart Worksheet into your Excel document.
2. In the Data field, enter the data for the entities, the source and sink entities, the flow values, and the directions of flow.
3. Select the Donut Chart Worksheet and click on any of the entities or arrows to open the Sankey Chart Editor.
4. Customize the chart by adding shape lines, changing colors, and adjusting the size of the chart.
5. Save the chart to your document.

Applications of Sankey Charts

Sankey charts are useful for visualizationizing a variety of data flows, including:

1. Social Network Flow: Sankey charts can be used to visualize the flow of people between different social networks or groups.
2. Financial Flow: Sankey charts can be used to visualize the flow of money between different accounts or entities.
3. Traffic Flow: Sankey charts can be used to visualize the flow of traffic between different intersections or cities.
4. Inventory Flow: Sankey charts can be used to visualize the flow of inventory between different locations or suppliers.

Overall, Sankey charts are a powerful visualization tool that can be used to help understand complex data flows. With their ability to show the direction and magnitude of a flow, as well as their customizable properties, Sankey charts are an invaluable tool for data visualization.

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