I am trying to install nam-1.12 and xgraph-12.1 for NS-2 simulation on Fedora 8, GNOME. The installation is fine, but when I try to use it. The following error messages are shown.
'nam: no display name and no $DISPLAY environment variable'
'xgraph: cannot open display `'
Should it mean that I am trying to launch nam/xgraph out of a X11 graphical session. How can I solve this problem?
Thank you for any clues