V 0.3.0 … almost
Version 020 was blobs. David Harel called nodes-as-sets “blobs”. They make graphs very expressive, particularly when you are trying to understand or model a complex topic. You can make high level general associations alongside...
Category: Higraph
Posts relating to the semantics and development of a tool to graphically edit Higraphs.
qtPyGraphEdit V0.1.0 – now with multipoint lines
For the last few months, I have been working on adding decent edges to the editor. When I mentioned it to a very technical friend, he was a little surprised that I would put...
qtPyGraphEdit V0.0.0-alpha is out.
After about 150+ hours of wrestling with Qt, I have a “Minimum Viable Product” of a GUI graph editor. It can be found on github It surprises me that in 2025, the bulk of...
A blast from the past – 1999 version of Higraph!
I was looking for an icon for the editor software, and I thought to look for the 1990’s tool – which had one. I had to fire up a Windows 98 VM to run...
Developing a Higraph Editor
In the mid 1990s I was given a copy of David Harel’s paper “On Visual Formalisms“, where he described an extension to graph theory where nodes become sets – or ‘blobs’ as he called them,...