From help-octave-request at bevo dot che dot wisc dot edu Sat Jan 31 05:10:39 2004
Subject: Re: Misc problems with octave-2.1.53 / gnuplot interaction
From: Thorsten Meyer <thorsten dot meyier at gmx dot de>
To: help-octave at bevo dot che dot wisc dot edu
CC: octave-help-list <help-octave at bevo dot che dot wisc dot edu>
Date: Sat, 31 Jan 2004 12:06:36 +0100

Hi there,

I had the same problem with octave-2.1.45 together with gnuplot 3.8j on 
SUNOS. A workaround is to insert a
    pause(0.1)
command (or even pause(0.2)) after each plot statement.
It seems that gnuplot with mouse support switched on somehow doesn't 
manage to keep up with the stream of commands fed to it by octave.

best regards

Thorsten

Dmitri A. Sergatskov wrote:

> I have "gset mouse" (no quotes) in my .octaverc to
> enable mouse support for gnuplot 3.8j.
> Now, with octave-2.1.53 I have the following problem:
>
> <<<<
>
> octave:1> x=linspace(1,100,100);
> octave:2> y=sin(x);
> octave:3> plot(x,y)
> (that worked fine, now try to repeat it)
> octave:4> plot(x,y)
>
> gnuplot> et nopolar
> octave:5>          ^
>          line 0: invalid command
>
>
> gnuplot> 1 0.841470984807897
>          ^
>          "/tmp/oct-9EUfzs", line 5: invalid command
>
> >>>>
>
> It does not have to be the same command -- any consecutive plot 
> command fail
> with similar error. The problem goes away if I remove "gset mouse" 
> from .octaverc.
>
> OK. Now I want to debug it and discover that I cannot interject "tee" 
> into
> octave_binary:octave:1> gnuplot_binary
> gnuplot_binary = gnuplot
> octave:2> gnuplot_binary="tee /tmp/gnuplot-oct.cmd |gnuplot"
> gnuplot_binary = tee /tmp/gnuplot-oct.cmd |gnuplot
> octave:3> x=linspace(1,100,100);
> octave:4> y=sin(x);
> octave:5> plot(x,y)
> sh: line 1: tee /tmp/gnuplot-oct.cmd |gnuplot: No such file or directory
> warning: broken pipe
> sh: line 1: tee /tmp/gnuplot-oct.cmd |gnuplot: No such file or directory
> sh: line 1: tee /tmp/gnuplot-oct.cmd |gnuplot: No such file or directory
> sh: line 1: tee /tmp/gnuplot-oct.cmd |gnuplot: No such file or directory
>
> It appears that I cannot have any parameters to the binary name:
> octave:6> gnuplot_binary="tee -i"
> gnuplot_binary = tee -i
> octave:7> plot(x,y)
> sh: line 1: tee -i: command not found
> warning: broken pipe
> sh: line 1: tee -i: command not found
> sh: line 1: tee -i: command not found
> sh: line 1: tee -i: command not found
>
> It works though for straight "tee":
> octave:9> plot(x,y)
> octave:10> set data style lines
> set nologscale
> set nopolar
> pl '/tmp/oct-pJf0X6' t "line 1"
>
> OK. With that, see what happens if we put "gset mouse" back into 
> .octaverc.
> [dima at localhost dima]$ cat .octaverc
> gnuplot_binary="tee"
> gset mouse
>
> [dima at localhost dima]$
> [dima at localhost dima]$ octave
> GNU Octave, version 2.1.53 (i686-pc-linux-gnu).
> Copyright (C) 2004 John W. Eaton.
>
> ....
>
> Report bugs to <bug-octave at bevo dot che dot wisc dot edu> (but first, please read
> http://www.octave.org/bugs.html to learn how to write a helpful report).
>
> gnuplot_binary = tee
> octave:1> set data style lines
> set mouse
>
> octave:1> x=linspace(1,100,100); y=sin(x);
>
> octave:2> plot(x,y)
> set nologscale
> set nopolar
> octave:3> pl '/tmp/oct-tPnjcR' t "line 1"
>
> (I have to hit "Enter" to get the next prompt -- May this is the 
> problem, no "\n" at the end?)
> octave:3> plot(x,y)
> octave:4> set nologscale
> rep
> set nopolar
> rep
> pl '/tmp/oct-mTqTEa' t "line 1"
>
>
> ===========
> If I remove "gset mouse" everything looks pretty much the same:
>
> octave:1> x=linspace(1,100,100); y=sin(x);
> octave:2> plot(x,y)
> octave:3> set data style lines
> set nologscale
> set nopolar
> pl '/tmp/oct-ViUy5f' t "line 1"
>
> octave:3> plot(x,y)
> octave:4> set nologscale
> rep
> set nopolar
> rep
> pl '/tmp/oct-0bqBPU' t "line 1"
>
> octave:4>
>
> ===============
>
> This problem did not exist in 2.1.50 (I have not tested .51 and .52).
> (I do not know when "tee" problem has appeared, but it used to work
> at least few releases back.)
>
> Any help would be appreciated.
>
> Sincerely,
> Dmitri.
>
>
>
>
>
>
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