Sankey chart is a type of diagram that is used to represent networks of entities or objects that interact or are connected in a certain way. They are commonly used in disciplines such as engineering, economics, and social sciences to understand complex networks and systems. In this article, we will explore what a Sankey chart is, how it is created, and its application in understanding complex systems.

Sankey chart creation
Unlike other types of charts, Sankey diagrams are built from a topological perspective, meaning they use lines to show flow and direction. The diagram consists of two columns called source and target that are connected with a set of lines that show the amount of flow between the two columns. The line is designed to illustrate flow in a network of entities, allowing the reader to visualize the flow of information or data between them.

One unique feature of Sankey diams is that they enable the visualization of different quantities flowing between two nodes or flow between different nodes at different times or locations. This makes them a versatile tool for understanding complex networks.

The application of Sankey charts
The most common usage of Sankey charts is to show the flow of data or information between different components of a complex system. It is used extensively in social sciences for understanding the networks of interactions among social groups in society. It is also useful for understanding the flow of money between different sectors in the economy. For example, in the case of a company, the Sankey chart can be used to show how sales, production, and marketing flow into and out of the company.

Another commonly used application of Sankey charts is in the construction and maintenance of transportation networks, such as highways and railways, where flow of traffic and materials can be easily seen. A Sankey chart can also be used to show the flow of electricity, water, and gas networks, showing where the flow is happening and between what.

Conclusion
Sankey charts are a versatile tool that can be used to help understand complex networks and systems. They are created by using lines to show flow and direction and can be used to represent networks of entities in different ways. When it comes to applications, Sankey charts can be used to show flow of data or information, the flow of money, or the flow of energy within a complex system. With its unique features, it is not surprising that Sankey charts have become a powerful tool for understanding complex network patterns.

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