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Error: EDGEMATCH: Bad nbit argument (GETMAP)

Solution or Workaround

Why does EDGEMATCH returns this message?
BAD NBIT ARGUMENT (GETMAP)

Answer:

The nodes probably have the value "0" for their ids. Edgematch expects the nodes to have unique IDs.

Run the command RENODE prior to EDGEMATCH. EDGEMATCH will not work if node numbers have not been assigned to the nodes. RENODE will assign unique node numbers to each node. You must run BUILD after RENODE.