Visualizing hal nets with graphviz

I'm learning some python and I needed a quick hack to get a visual map on hal nets, so I made this little python script that reads input from "halcmd show" and outputs a graphviz file. Maybe you will find it useful.

You need to:
1) install graphviz, using "sudo apt-get install graphviz"
2) download the hal_sigs_graphviz.py attachment in a directory of your choice.
3) make a shell script inside the same dir, with the following lines in it and run it:
Attached is an example of what I get when running it with my (stepconf generated) hal configuration I use on my first cnc router. Tables are components and circles are nets.

I will probably add more features like colors and some fine tuning on how graphviz outputs the image, when I find some time to learn more about this excellent application. But it's probably good enough for a quick visualization as it is now.

Forum does not let me attach a .py file, so I renamed it as .txt. You need to rename it back as a .py

I also had to resize the image file.

-- DE --
DANKE für das kleine jedoch sehr Effiziente Tool.

Es hilft mir sehr die HAL Daten einzuordnen was ich erstelle oder auch nicht .

DANKE, machen Sie weiter so!

Beim Ausführen hatte ich Probleme, mir war nicht bewusst das LinuxCNC gestartet sein muss. Es wird die Aktuelle HAL von LinuxCNC dargestellt.

-- EN --
THANK YOU for the small but very efficient tool.

It helps me a lot to classify the HAL data what I create or not .

THANK YOU, keep up the good work!

I had problems running it, I wasn't aware that LinuxCNC had to be started. The current HAL of LinuxCNC is displayed.