how to generate graph ?

GAMS
1

Hi,
How do I create a graph like this?
image.png
2 Nodes whose color is different, Differs from other nodes.

thanks.

2

Hi

You could start with the techniques used in the following two models from the GAMS model library:

  • Triangular Graph Circle Packing (TRICP,SEQ=395)
  • Traffic Equilibrium Problem (TRAFFIC,SEQ=169)
    In these models graphs are defined using mappings. (see here in the documentation.

Cheers
Renger