I have recently been researching diagrams to represent the Narrative Arc. My memoir, based partly on childhood memories, needed to be restructured. I’m not one of these clever writers who map out their story-line up front.
One diagram, from the Storyboard That site for teachers and students, was clean and simple, based on Freytag’s Pyramid. There are many examples of narrative arc diagrams—all originating from Aristotle’s ideas on Poetics—often with only minor variations.
I then drew up my own diagram (The Narrative Arc) based on one I found on the widbook writers’ site (See Above). It seems to fit my particular story well.