Ledger register history to Sankey diagrams?

[Colin Dean]

Has anyone created a way to easily to Sankey diagrams with Ledger output in any way?

https://en.wikipedia.org/wiki/Sankey_diagram

I'm using Ledger's robust commodity support to track conference tickets issued to scholarship recipients. I'd like to create a Sankey diagram that shows the number of tickets that move through the system. The starting state is "Available", then they move through states such as "Offered", "Owed", "Issued", "Cancelled", "Attendance Verified".

I'd love to push a button and receive a Sankey diagram that shows the flow of tickets through the system but I'm not quite sure of how to approach the problem from within the Ledger ecosystem.

I'd be awesome if the output was something that could be input to Sankeymatic (http://sankeymatic.com/build/), e.g.

Wages [2000] Budget

Interest [25] Budget

Budget [500] Taxes

Budget [450] Housing

Budget [310] Food

Budget [205] Transportation

Budget [400] Health Care

Budget [160] Other Necessities

but anything that I could massage into a format like this would be great.

[Colin Dean]

A better example in my use case would be something like this:

Available [90] Offered

Offered [70] Owed

Offered [20] Refused

Owed [70] Issued

Issued [3] Canceled

Issued [67] Attendance Verified

Available [10] Unused