Sure. What that guy is using is actually not the most-interesting diagram style, IMHO, for automatic layout of network maps, if you want large-scale stuff, which is where the automatic layout gets more interesting. I have some scripts floating around somewhere that will generate very large network maps — run a bunch of traceroutes, geolocate IPs, dump the results into an sqlite database, and then generate an automatically laid-out Internet network map. I don’t want to go to the trouble of anonymizing the addresses and locations right now, but if you have a graphviz graph and want to try playing with it, I used:
goes looking
Ugh, it’s Python 2, a decade-and-a-half old, and never got ported. Lemme gin up an example for the non-hierarchical graphviz stuff:
That’ll take a ton of graphviz edges and nicely lay them out, albeit not in that kind of hierachy shown. You can create massive network maps like this. Note that was last looking at graphviz’s automated layout stuff about 15 years ago, so it’s possible that they have better algorithms now, but this can deal with enormous numbers of nodes and will do reasonable things with them.
I just grabbed his example because it was the first graphviz network map example that came up.
tal@lemmy.today 1 month ago
It seems like a good time to learn graphviz’s dot format for the network layout diagrams, with automated layout.
blog.ipspace.net/kb/…/40-Network-Diagrams/
chM5tZ8zMp@lemmy.sdf.org 1 month ago
TIL. Thank you!
tal@lemmy.today 1 month ago
Sure. What that guy is using is actually not the most-interesting diagram style, IMHO, for automatic layout of network maps, if you want large-scale stuff, which is where the automatic layout gets more interesting. I have some scripts floating around somewhere that will generate very large network maps — run a bunch of traceroutes, geolocate IPs, dump the results into an sqlite database, and then generate an automatically laid-out Internet network map. I don’t want to go to the trouble of anonymizing the addresses and locations right now, but if you have a graphviz graph and want to try playing with it, I used:
goes looking
Ugh, it’s Python 2, a decade-and-a-half old, and never got ported. Lemme gin up an example for the non-hierarchical graphviz stuff:
graph.dot:
Processed with:
$ sfdp -Goverlap=prism -Gsep=+5 -Gesep=+4 -Gremincross -Gpack -Gsplines=true -Tpdf -o graph.pdf graph.dotGenerates something like this:
Image
That’ll take a ton of graphviz edges and nicely lay them out, albeit not in that kind of hierachy shown. You can create massive network maps like this. Note that was last looking at graphviz’s automated layout stuff about 15 years ago, so it’s possible that they have better algorithms now, but this can deal with enormous numbers of nodes and will do reasonable things with them.
I just grabbed his example because it was the first graphviz network map example that came up.