Title: Introduction
Sankey charts, also known as directed arc graphs, are a type of graph used to represent complex relationships and data in an organized and visually appealing manner. They are particularly useful for demonstrating relationships between different segments of a system, such as departments or supply chains. This article aims to explain the concept behind these graphical representations and their practical applications.
What is a Sankey Chart?
A Sankey chart is a diagram consisting of a network of interconnected arcs, where each arc represents a flow of a different type of material or information. The arcs are drawn in different directions, with each arc corresponding to a different flow, which can include physical materials, information, people, or money.
Where do Sankey Charts come from?
Sankey charts were developed by Hans Sankey in the 1930s as a visualization tool for demonstrating flow patterns in various types of systems. These charts were particularly useful in complex economic or business-related systems, such as production, transportation, or supply chains.
How are Sankey Charts created?
A Sankey chart is created through the use of software, such as Microsoft Visio or Adobe Illustrator. To create a Sankey chart, the analyst must first identify the different types of flows that need to be represented. Once identified, the analyst begins organizing the information in the chart’s network, using the arcs to represent different types of flow and the direction of each arc to show the flow direction.
How are SankeyCharts Used?
Sankey charts are used to visualize relationships between different segments of a system, such as departments or supply chains. They can be used to show how information flows within a system, or how materials flow between different departments. Sankey charts can also be used to visualize social or cultural relationships within a population.
Conclusions
Sankey charts are a powerful tool for visualizing complex relationships and data. They can be used to visualize relationships between different segments of a system or between different information flows within a system. By using a Sankey chart, one can more easily understand the relationships in a system and make more informed decisions about the direction of flow within it.

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