This Gist is there to help you creating a Sankey Diagram from your Google Spreadsheets.
- Open a spreadsheet
 - Click "Tools" -> "Scripts"
 - create the two files 
code.gsandindex.html - insert the document ID from the URL on line 10, 
code.gs - select which sheet is the base for the sankey diagram
 - the layout of the table should be
 
- Open the same document
 - Click "Zusatzfunktionen" -> "SankeyDiagram"
 
https://docs.google.com/spreadsheets/d/1IUmvhYuuBvfYEu8OfDczmW6LQW-xaeh5c6rklOg3x-o/edit?usp=sharing