Sankey charts are a visual representation of flow networks that can be used to showcase data in a highly understandable and informative way. Developed in the late 1800s by Alexander Sankey, they are used in many fields, including science, engineering, economics, social sciences, and business, among others. In this article, we will take an in-depth look at the creation and applications of Sankey charts.
Creating a Sankey Chart: The Overview
To create a Sankey chart, first, identify the data that you want to visualize. For example, in a flow network, you would identify the source, destination, and the items or objects moving through each connection. Next, draw the nodes, which represent the source and destination nodes, and the arcs that connect these nodes. Then, connect the arcs to represent the flow of data or objects between the source and destination nodes. Finally, label the arcs and nodes to give them names and descriptions.
Some Tips for Creating a Sankey Chart
– Use clean, simple designs: A clear and visually appealing design will make your Sankey chart stand out.
– Consider the flow direction: The flow direction on a Sankey chart should be clearly indicated, either from right to left or left to right.
– Choose the correct symbols for your data: For example, if you are visualizing the flow of income, you could use a dollar symbol to represent the flow.
– Consider the color scheme: A vibrant, eye-catching color scheme can make your Sankey chart more appealing.
Applications of Sankey Charts
Sankey charts can be used in various fields to represent different kinds of data. Here are some examples:
– Science and Engineering: In science and engineering, Sankey charts can be used to represent the flow of energy, information, or materials between different processes. For instance, you could use a Sankey chart to visualize the flow of water from the tap to the kitchen sink, helping you understand the amount of water being used.
– Economics: In economics, Sankey charts can be used to visualize the flow of capital, labor, and goods between different firms and sectors. For example, you could use a Sankey chart to illustrate the flow of data between different industries, showing how data is used to make decisions in the economy.
– Social Sciences: In the social sciences, Sankey charts can be used to visualize complex relationships between different populations or groups of people. For example, you could use a Sankey chart to visualize the flow of immigration between different countries, showing how people are moving between countries.
– Business: In business, Sankey charts can be used to visualize the flow of information and resources between different departments or teams. For example, you could use a Sankey chart to visualize the flow of sales data between different departments, helping you understand the efficiency and effectiveness of the sales process.
Conclusion
Sankey charts are a powerful visual representation of flow networks that can be used to showcase data in a highly understandable and informative way. Whether you are using them for science and engineering, economics, social sciences, or business, you can leverage the insights and connections they can reveal. By following the steps outlined in this article, you will be able to create attractive, informative, and effective Sankey charts.

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