"Theory is when you know everything, but nothing works. Practice is when everything works, but you don't know why. Here, we combine practice and theory : nothing works, and nobody knows why!" ~ A. Einstein
I read your posts yesterday (sorry, I am new to DokuWiki) and decided to give it a shot. I used the grapher code posted by andi and created a new plugin mindmap that turns pages and (optionally) media files of specified namespaces into a mindmap.
Using your requests, I created two possible outputs:
a graphviz dot file turned into a PNG using the Google Chart Tools.
an XML file conforming to the Graph Exchange XML Format.
depth=<number>, search depth (linkage, etc)
format=<string>, available formats: dot, gexf
include_media=<string>, available values: ns, all, none
height=<number>, image height (for PNG output)
width=<number>, image width (for PNG output)
use_cached_pages=<onoff>, optional turning off using cached pages only. Will slow things down considerable when using high depth value.