By using OpenGL to represent relationships, I can get a quicker indication of the inter-relationship of parts. It suffers for the screen capture and uploading to Google and needs to be seen in action to be appreciated. In this case it is using a set of transparent test textures as indicators of conditions.
By cycling the action it allows me to see how these different measures interact over time. It does represent many more dimensions of a problem than a static graph, or even a 3D graph of a relationship.