Unclogging the Stream: Mastering Sankey Charts for Process Visualization

Visualizing processes can be a challenge, but Sankey charts offer a powerful solution to this problem. They are particularly helpful in showing the flow of materials, waste, or other types of inputs and outputs in a process, providing a clear and intuitive representation of the relationship between different variables. In this article, we will explore the basics of Sankey chart creation, as well as some common applications and best practices.

What is a Sankey Chart?

A Sankey chart, also known as a Sankey diagram, is a flowchart that uses arrows to represent the flow of materials or information between different nodes. The chart consists of a set of nodes, each depicting a process or system, and a set of arrows connecting these nodes to represent the flow of materials or information. The chart is often used to show the inputs and outputs of a system, and the direction and volume of these flows.

How to Create a Sankey Chart

There are a few different tools and techniques you can use to create a Sankey chart. Here are some common steps:

Choose a software program: There are many software programs that can be used to create Sankey charts, including Microsoft Visio, Lucidchart, and draw.io. Choose a program that you are comfortable using and that has the features you need.
Add nodes: Open the software program and create a new document. Add a set of nodes to the document by clicking and dragging the nodes icon onto the canvas. You can then give each node a name and select its properties, such as color and size.
Connect nodes: Once you have added the nodes, you can connect them using arrows. The arrows will automatically appear as you hover over the nodes, and you can adjust their positions and directions as needed.
Customize the chart: After you have added the nodes and arrows, you can customize the chart by changing the appearance of the chart, adding tags or labels, and formatting the chart elements as needed.

Applications of Sankey Charts

Sankey charts are an effective way to visualize various types of processes, including:

Material flow: Sankey charts can be used to show the flow of materials between different nodes in a production process, such as raw materials entering a manufacturing facility and becoming finished products that are shipped out.
Waste management: Sankey charts can be used to show the flow of waste materials through a waste management system, highlighting areas where waste can be reduced or recycled.
Information flow: Sankey charts can be used to show the flow of information between different nodes in a system, such as an organization or a complex network.
Resource consumption: Sankey charts can be used to show the flow of resources, such as energy or water, between different nodes in a system.

Best Practices for Creating Sankey Charts

Here are some best practices to keep in mind when creating Sankey charts:

Use clear and concise labels: Make sure that all nodes in the chart have clear and concise labels that accurately describe the process or system they represent.
Use different colors or symbols: Consider using different colors or symbols to distinguish between different types of processes or materials in the chart.
Keep the chart simple: Try to keep the chart simple and easy to understand, avoiding unnecessary complexity or clutter.
Use arrows to show direction and volume: Use arrows to show the direction and volume of the flow of materials or information between nodes in the chart, as this will help to make the chart easier to interpret.
Review and revise: Review the chart carefully once it is complete, making any necessary revisions or improvements to ensure that it accurately represents the process or system it is intended to visualize.

Conclusion

Sankey charts are a powerful tool for process visualization, offering a clear and intuitive representation of the flow of materials, waste, or information in a process. By following best practices and using a program that is suited to your needs, you can create effective Sankey charts that help you to better understand and optimize complex systems.

SankeyMaster

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