I just discovered that gnuplot has an
xterm terminal output mode
which uses xterm's tektronix emulator (since gnuplot
4.2.6). This is useful if you have logged into a remote
machine and want to plot something, but you didn't have the foresight
ssh -Y to bring along a connection to your X server. I used to use
gnuplot> set term dumb
but often the low resolution available with standard terminal characters left the resulting output almost unintelligible. With
gnuplot> set term xterm
xterm will pop up a new window in tektronix mode, in which you
get very nice monochrome graphics.
Besides the “forgot to tunnel X” use case outlined above, this output would also be useful if you wanted to avoid exposing yourself to X vulnerabilies while logging into an untrusted machine.
Obviously, you'll have to be running
xterm for any of this to work ;).