Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.graphics.apps.gnuplot > #691 > unrolled thread

-persist under ms windows echos input

Back to article view | Back to comp.graphics.apps.gnuplot

Contents

  -persist under ms windows echos input Martin Hegedus <martin.hegedus@gmail.com> - 2011-11-18 14:45 -0800
    Re: -persist under ms windows echos input Michi <michael.boelling@gmail.com> - 2012-02-02 05:22 -0800

#691 — -persist under ms windows echos input

For some reason gnuplot echos input when the -persist command line
argument is used with redirected standard input with windows xp
command prompt.  This is for version 4.4.3 of gnuplot.

For example, lets assume a file called gnuplot_in.txt contains the
following one line of input
plot sin(x) title 'sin(x)'

Then the following behave differently
c:\>gnuplot gnuplot_in.txt -persist
and
c:\>gnuplot -persist < gnuplot_in.txt

The first command will have only the gnuplot> prompt at the command
line and the plot will persist.
On the other hand, the second command will show
gnuplot> plot sin(x) title 'sin(x)'
gnuplot>
And the plot will not persist.

The echoing of the input when using the -persist causes JavaPlot to
fail since JavaPlot uses Javas exec() command with (by default) the -
persist command line argument to start gnuplot and then writes out the
plot commands to the procedures standard input, i.e.
OutputStreamWriter out = new
OutputStreamWriter(proc.getOutputStream());
out.write(comms);
out.flush();
out.close();
This methodology is similar to the second gnuplot execution mode shown
above.

[toc] | [next] | [standalone]

#892

I read that 
pause -1
added at the end could help

https://groups.google.com/group/comp.graphics.apps.gnuplot/browse_thread/thread/bd9e0ed78ca2cf42/b8ce4f2010019ccf?lnk=gst&q=persist#b8ce4f2010019ccf

but that could leave zombie processes which seems to get fixed by this post

http://groups.google.com/group/comp.graphics.apps.gnuplot/browse_thread/thread/2f637a729b8d2eb1/fdc1185f43941c5b#fdc1185f43941c5b

Do you have any other solutions that may help?

[toc] | [prev] | [standalone]

Back to top | Article view | comp.graphics.apps.gnuplot

csiph-web