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Re: Examples doesn't seems to work
From: |
Henry F. Mollet |
Subject: |
Re: Examples doesn't seems to work |
Date: |
Thu, 06 Sep 2007 12:48:47 -0700 |
User-agent: |
Microsoft-Entourage/11.1.0.040913 |
I was not clear. I have no problems on my mac regarding gnuplot_x11. I
assume that the path to gnuplot_x11 was set up when I installed gnuplot-4.0
(some time ago) and more recently gnuplot-4.2.2 app.
Henry
on 9/6/07 11:31 AM, Jim Langston at address@hidden wrote:
> Need a little more info on the env. - could be running on a server which may
> not have a graphics card, most of these hardware installations don't
> install X drivers
> by default, need something like xvfb , but this is just a guess.
>
> Jim
>
> /////////////////////////
>
> Henry F. Mollet wrote:
>> 1) The integration results are in the workspace
>> rwd x 200x2 3200 matrix
>> Type x at the octave prompt and they will appear on your screen. You can
>> also delete the ';' at the end of the following code line, which supresses
>> the output
>> x = lsode ("f", x0, t);
>>
>> 2) Your version of octave (on your platform) cannot find the X11 driver. Not
>> sure why your gnuplot cannot find it as my .gnuplot has no directions on
>> where to look.
>>
>> [~] -bash-2.05b 512$ locate gnuplot_x11
>> /Applications/GnuPlot.app/Contents/Resources/libexec/gnuplot/4.2/gnuplot_x11
>> /usr/local/libexec/gnuplot/4.0/gnuplot_x11
>>
>> [~] -bash-2.05b 511$ cat .gnuplot
>> set mouse
>> set loadpath "/usr/local/share/gnuplot/demo/" "/usr/local/bin/gnuplot"
>>
>> Henry
>>
>>
>> on 9/5/07 11:06 AM, Abdul Rahman Riza at address@hidden wrote:
>>
>>
>>> Dear All,
>>>
>>> I just installed octave and run an examples in
>>> http://www.gnu.org/software/octave/doc/interpreter/Simple-Examples.html#Simp
>>> le
>>> -Examples
>>>
>>> After invoke this command:
>>>
>>> octave:1> function xdot = f (x, t);
>>>
>>>> r = 1.4;
>>>> k = 1.4;
>>>> a = 1.5;
>>>> b = 0.16;
>>>> c = 0.9;
>>>> d = 0.8;
>>>> xdot(1) = r*x(1)*(1 - x(1)/k) - a*x(1)*x(2)/(1 + b*x(1));
>>>> xdot(2) = c*a*x(1)*x(2)/(1 + b*x(1)) - d*x(2);
>>>> endfunction
>>>>
>>> octave:2> x0 = [1; 2];
>>> octave:3> t = linspace (0, 50, 200)';
>>> octave:4> x = lsode ("f", x0, t);
>>> octave:5> plot (t, x)
>>> octave:6> Expected X11 driver: /usr/lib/gnuplot/gnuplot_x11
>>> Exec failed: No such file or directory
>>> See 'help x11' for more details
>>>
>>>
>>> My Question:
>>>
>>> Why there's no integration result?
>>> Why can't I get the plot of the function?
>>> Regards,
>>> Riza
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ---------------------------------
>>> Bergabunglah dengan orang-orang yang berwawasan, di bidang Anda di Yahoo!
>>> Answers
>>> _______________________________________________
>>> Help-octave mailing list
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>>>
>>
>>
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>