Title: Introduction
Data visualization is an essential tool for understanding complex information. Sankey chart is a type of diagram that can be used to display and analyze data in a visually appealing and organized manner. In this article, we will explore how sankey charts work, their benefits, and common applications in data visualization. We will also provide step-by-step instructions for creating sankey charts and best practices for interpreting and using them.
What Is a Sankey Chart?
A sankey chart is a type of diagram that shows how different entities are related to one another. It is named after its originator, Guglielmo Sankey, who is known for his statistical work on hydrography. A sankey chart typically consists of a series of paths, also referred to as ‘links,’ and nodes, also referred to as ‘seals,’ that represent the flow of information or resources between different entities. The path length or size of the link indicates the volume of flow, while the seal size indicates the amount of information or resource possessed by the entity.
Benefits of Sankey Charts
Sankey chart is a powerful tool for understanding complex data flows. It is useful for displaying data in a simple, clear, and easy-to-understand manner. Also, it is a versatile chart that can be used to visualize different types of information, including flow, transfer, or circulation of resources. It is also an effective tool for identifying patterns and trends in large sets of data.
Applications of Sankey Charts
Sankey chart has many applications in data visualization, including:
– Analyzing the flow of information or resources in different sectors.
– Identifying resource availability and use in different locations or sectors.
– Tracking the progress of a project or program.
– Visualizing the balance of different components in a system.
– Visualizing the flow of money, assets, or resources in financial models.
Steps to Create a Sankey Chart
Creating a sankey chart is easy if you follow these basic steps:
1. Gather the data you want to visualize.
2. Analyze the data and decide how to represent it on a sankey chart.
3. Draw the sankey diagram, starting with the seal. Start with the node that represents the entity that is receiving the most resources.
4. Insert the links between the nodes. The link length or size represents the volume of flow or the amount of information or resources being exchanged.
5. Add labels or symbols to each link, or seal, to indicate what the link represents and what it flows with.
6. Adjust the layout of the sankey diagram to ensure that the flow of information or resources is clear and easy to understand.
Best Practices for Interpreting and Using Sankey Charts
Interpreting and using sankey charts requires good attention to detail and visualization skills. Here are some best practices for interpreting and using sankey charts:
– Carefully read the legend to understand how the symbols or labels are used.
– Pay attention to the length and size of the links to understand their volume of flow or amount of information being exchanged.

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