Question

I’m using bash to feed gnuplot from a script. How you pop up only one window? Let say you run

#!/bin/bash 
for((i=1;i<6;i++)) do
  echo "plot sin(x)"
done | gnuplot -persist

you will get 5 windows of the same plot. Is there an option to get only one?

---

There was a mistake above. That wasn’t exactly the kind of run-time i’m doing. Is more like runing the next script, say, 5 times

#!/bin/bash 
echo "plot sin(x)"    

I just realized that what I want to do is kill the latest gnuplot process before make the new one.

Sorry for that. I’m sooo tired today 😀

Answer 1

the gnuplot x11 terminal uses a separate program called gnuplot_x11 for displaying the results. From the help

The `xlib` terminal driver supports the X11 Windows System.  It generates
 gnuplot_x11 commands, but sends them to the output file specified by
 `set output '<filename>'`. `set term x11` is equivalent to
 `set output "|gnuplot_x11 -noevents"; set term xlib.`
 `xlib` takes the same set of options as `x11`.

So, if you want to kill plots that are remaining after a gnuplot -persist, it should suffice to killall gnuplot_x11.