bash 如何使“-persist”对 GNUPLOT 独一无二
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How to make "-persist" unique for GNUPLOT
提问by stringparser
I'm using bash to feed gnuplot from a script. How you pop up only one window? Let say you run
我正在使用 bash 从脚本中提供 gnuplot。你怎么只弹出一个窗口？假设你跑
#!/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?
您将获得相同图的 5 个窗口。有没有只能得到一个的选择？
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
上面有错误。那不是我正在做的那种运行时。更像是运行下一个脚本，比如 5 次
#!/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.
我刚刚意识到我想要做的是在创建新进程之前杀死最新的 gnuplot 进程。
Sorry for that. I'm sooo tired today :D
对不起。今天太累了 :D
回答by mgilson
the gnuplot x11 terminal uses a separate program called gnuplot_x11for displaying the results. From the help
gnuplot x11 终端使用一个单独的程序gnuplot_x11来显示结果。从帮助
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.
所以，如果你想杀死在 a 之后剩余的图gnuplot -persist，它应该足够了killall gnuplot_x11。
回答by byrondrossos
What about the following:
以下情况如何：
echo `for((i=1;i<6;i++))
do
echo 'plot sin(x)'
done` | gnuplot -persist
回答by jmbr
You might be interested in the iteration capabilities available in newer versions of Gnuplot (see the section Iteration in the user's guide)
您可能对较新版本的 Gnuplot 中可用的迭代功能感兴趣（请参阅用户指南中的迭代部分）
回答by user2159375
In one script one can
在一个脚本中可以
echo "set grid" > gpfile
tail -f gpfile | gnuplot '-'
then in another process one can write any gnuplot commands into the gpfile
然后在另一个进程中可以将任何 gnuplot 命令写入 gpfile
echo "plot \"whatever\" " >> gpfile
sleep 3
echo "replot" >> gpfile
...etc
...等等
Its useful for realtime process control display, where some status file
它对于实时过程控制显示很有用，其中一些状态文件
is being updated at intervals.
正在不时更新。
