Tuesday, May 9, 2023

Multi-Level Sankey with the New Sankey Chart Type in Tableau

Through my previous post on the new Sankey chart type, I got in touch with Wilson, the product manager leading the development of this new chart type. I made some comments on creating multi-level Sankey via cascading of single Sankey's. He told me it can be done already by dropping more dimensions into the Level card. How could I overlook that functionality when exploring? Maybe it's because there are only two level bars in the Level card icon? Or did I have a fixation on building multi-level Sankey via a Lego approach?

Oh well, I am really happy that we can build multi-level Sankey charts with a few drag and drops!

Below are a few varieties of multi-level Sankey chart built with the new chart type.

1.Multi-Level Sankey via Chart Type

We only need 5 drag-n-drops to create this chart: 4 dimensions and 1 measure.

2.Multi-Level Sankey with Level Padding

In the Level card, we can set the option to add vertical space between members of a level dimension. This is called Level Padding.

3.Multi-Level Sankey without Level Bars

In the Level card, we can set the option to hide/minimize the vertical bars.

4.Multi-Level Sankey Showing Labels when Selected or Highlighted

We can set the option in the Label card to show labels on links that are selected or higlighted.

Comments

Overall, the creation of multi-level Sankey chart is a breeze.

My only observations are as follows.
  • Can we have more options in setting the colors of links and bars? 
  • Can we support Funnel chart through this chart type? People ask me about Funnel chart often.
  • In my experience, one decimal percentage is enough.
The above chart can be viewed here. And it can be explored in web edit. The workbook can't be downloaded because it's a pilot program.

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