Hi Marilyn, Brent & others, Thanks you for your responses.
> Do you need to ssh -X to enable X data through from the server, or > an xhosts + to let the workstation display X data from a remote > server? Yes, I made sure X11 forwarding is enabled. I ran xterm to check it. So this is not the problem. I am not sure that OpenDX works that way: that the OpenDX server opens a regular X11 window. I suspect that the server communicates with the GUI, and GUI is responsible for displaying the image. I think that way, because when I ran my program the GUI opened a black window for an image. The window remained open after I killed the server. Best, Irek
