Select "Microsoft Excel" and choose the file listed above to load into Tableau NOTE - this solution requires using Tableau 8.2 (see 8.1 solution below)įrom the initial Tableau screen click "Connect to data". If you would like to follow along you can download the data file here. Once this is loaded in Tableau the formulas are basically the same as my previous instructions here. This eliminates the data shaping that was previously needed. This is because the "Link" field in both worksheets inner joins the 100 rows with the 49 rows to create the 4,900 rows that are needed to plot the sankey. Using the default inner join this creates 4,900 rows. I added a field in both worksheets called "Link" and just populated the word "link" in both sheets. It simply contains 49 rows with the value of t going from -6 to 6 in. The second worksheet in the workbook is the Sankey Model. The first worksheet has the Sankey Data (100 rows from my Energy Sankey, 1 row for each 1%). The new data connectivity interface allows the user to import two Excel sheets from the same Workbook and apply various joins. ![]() By using the new and improved data connectivity it is possible to shape the data for the sankey diagram without needing to prepare it in Excel or SQL ahead of time. So the challenge is to take data for the sankey and apply the transformation without using the Excel Macro or SQL code that I've posted previously. If there are 10 Sankey visualizations, and when there’s new data, you don’t want to manually update the data and do the data transformation all over again in Excel." Is there a way to do that data transformation in Tableau directly? The reason is that of scalability. "The procedure you describe on how to do Sankey diagram requires the step to do data transformation in Excel. Today someone emailed me with an interesting question regarding building sankey diagrams in Tableau. It's been a few months since my original post on building sankey diagrams in Tableau, but I continue to get regular emails with examples and questions. ![]() Sankey diagram are now even easier with Tableau 8.2. NOTE: New blog post explaining new method and formula posted here using SIN() instead of Sigmoid function. Using Improved Data Connectivity in Tableau 8.2 to Build Sankey Diagrams
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