Sankey charts (a.k.a. diagrams) are useful for visualizing the flow of data or information through a system or process. Here are some advantages of using a Sankey chart:
- Easy to understand (if used correctly): Sankey charts are visually appealing and easy to understand. They allow you to quickly see the flow of data or information from one point to another.
- Efficient use of space: Sankey charts use space efficiently, which makes them ideal for displaying complex systems or processes.
- Highlights key areas: By using color or thickness to represent the flow of data, Sankey charts can help to highlight key areas where there may be bottlenecks or where data is being lost.
- Allows for comparisons: Sankey charts can be used to compare different systems or processes side by side, making it easy to identify differences and similarities.
Sankey charts are ideal for situations where you need to visualize the flow of data or information, such as in:
- Energy and water usage
- Supply chain management
- Carbon emissions along the production chain
- Sales and marketing funnel analysis
- Website user behavior analysis
- Financial transactions
Overall, Sankey charts are a powerful tool for visualizing complex systems or processes and are particularly effective when you need to understand the flow of data or information, but should be used with caution (i.e. not just for its fancy effect).
To help with it, here are some common pitfalls to avoid when building a Sankey:
- Using too many nodes: Sankey charts can become cluttered and difficult to read if there are too many nodes. To avoid this, try to simplify the chart by grouping nodes or consolidating data.
- Not using consistent node names: Consistent node names are important for readability and accuracy. Ensure that all nodes are labeled consistently throughout the chart.
- Using too many colors: While color can be useful for highlighting specific flows, using too many colors can make the chart confusing and overwhelming. Stick to a limited color palette.
- Not using a clear hierarchy: Sankey charts work best when there is a clear hierarchy or flow from one node to another. Make sure that the nodes are arranged in a logical order and the flows are easy to follow.
- Not providing context: Without proper context, a Sankey chart can be difficult to understand. Include a title, labels, and explanatory text to provide context and help the viewer understand the chart's purpose and message.
- Not considering scalability: Sankey charts can become hard to read if they are too small or too large. Consider the scale of your chart and ensure that it's legible at different sizes.
By avoiding these common mistakes, you can create a clear Sankey chart that effectively communicates your data and insights.
Stay tuned for the next blog post, because we're going to showcase how to build a Sankey in Tableau!