I would like to use ELK to analyze user navigation patterns (ala Apache Access logs) and wondering if a User Flow graph similar to Google Analytics could be added as a visualization.

I have not quite figured out the document structure that could power that yet but I imagine that each document would be a session and it could maybe have 6 fields for the 1st visited page, 2nd visited page and so on...

Here's a sample User Flow graph from google analytics: