Sankey Diagrams

A similar Sankey-style diagram to the one I presented in my last post can be found on the visualcomplexity.com website.

It shows the estimated budgeted costs and earnings and was published by IBM back in 1940 (original source: H. Arkin, Graphs: How to make and use them (Harper & Brothers Publishers, New York, ed. Revised, 1940).

I am not sure if this fully qualifies as a Sankey diagram, since the flows are not directional. The earnings from sales of different products are broken down into arrows of different magnitude from/to the left. Costs for producing the products and overhead costs are on the right side. This chart thus constitutes a graphical representation of an accounting system, with values given in percent rather than as absolute figures.

Manuel Lima’s visualcomplexity website has more interesting diagrams, and one can spend hours browsing the projects. I will be presenting a few more of them that qualify as Sankey diagrams here on the blog in the future.