Re: Problem with simple graphics

[Bernard Abramson]

On Feb 19, 2012, at 6:54 PM, Ben Abbott wrote:

> On Feb 19, 2012, at 1:55 PM, Bernard Abramson wrote:
> 
>> On Feb 19, 2012, at 12:26 PM, Bernard Abramson wrote:
>> 
>>> On Feb 19, 2012, at 11:19 AM, Ben Abbott wrote:
>>> 
>>>> *** please reply-all so that others may benefit from our exchange ***
>>>> 
>>>> *** also respond at the bottom so that the entire exchange can be read 
>>>> from top to bottom ***
>>>> 
>>>> On Feb 19, 2012, at 10:28 AM, Bernard Abramson wrote:
>>>> 
>>>>> On Feb 18, 2012, at 9:36 PM, Ben Abbott wrote:
>>>>> 
>>>>>> On Feb 18, 2012, at 5:40 PM, Bernard Abramson wrote:
>>>>>> 
>>>>>>> I have the current version of Octave (3.4.0) running on the current 
>>>>>>> version of Mac OS X.  I have installed Gnuplot.  I have corrected the  
>>>>>>> DYLD_LIBRARY_PATH problem in  Gnuplot-4.4.3.  However, when I appempt 
>>>>>>> to plot in Octave I obtain:
>>>>>>> 
>>>>>>> octave-3.4.0:1> sombrero(25)
>>>>>>> error: popen2: popen2 (child): unable to start process -- Operation not 
>>>>>>> permitted
>>>>>>> error: called from:
>>>>>>> error:   
>>>>>>> /Applications/Octave.app/Contents/Resources/share/octave/3.4.0/m/plot/__gnuplot_open_stream__.m
>>>>>>>  at line 30, column 44
>>>>>>> error:   
>>>>>>> /Applications/Octave.app/Contents/Resources/share/octave/3.4.0/m/plot/__gnuplot_drawnow__.m
>>>>>>>  at line 72, column 19
>>>>>>> sh: /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: /bin/sh: 
>>>>>>> bad interpreter: Operation not permitted
>>>>>>> error: `unset' undefined near line 2 column 1
>>>>>>> warning: broken pipe -- some output may be lost
>>>>>>> 
>>>>>>> Any suggestions?
>>>>>>> 
>>>>>>> Sincerely,
>>>>>>> 
>>>>>>> Bernard Abramson
>>>>>> 
>>>>>> What do you get when you type ...
>>>>>> 
>>>>>>  system ('which gnuplot')
>>>>>> 
>>>>>> ... I get ...
>>>>>> 
>>>>>>  /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot
>>>>>> 
>>>>>> If so, what happens when you type ? ....
>>>>>> 
>>>>>>  system gnuplot
>>>>>> 
>>>>>> By "current verrsion of MacOS X do you refer to 10.7.3?
>>>>>> 
>>>>>> Ben
>>>>>> 
>>>>> Ben,
>>>>> 
>>>>> Thanks for the quick reply.
>>>>> 
>>>>> system('which gnuplot')
>>>>> 
>>>>> yields the same answer you quoted.
>>>>> 
>>>>> system gnuplot
>>>>> 
>>>>> yields:
>>>>> 
>>>>> sh: /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: /bin/sh: 
>>>>> bad interpreter: Operation not permitted
>>>>> ans =  126
>>>>> 
>>>>> Yes, I'm using OS X 10.7.3
>>>>> 
>>>>> Any suggestions will be appreciated.  Whatever is wrong must be minor as 
>>>>> there ought to be many many successful installations of Octave on Mac.
>>>>> 
>>>>> Bernard
>>>> 
>>>> It looks like the change you made to the gnuplot script introduced a 
>>>> syntax error.
>>>> 
>>>> Any chance you edited the file below with Textedit ?
>>>> 
>>>>    /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot
>>>> 
>>>> If so, you'll need to be sure to save it as plain text. When saving be 
>>>> sure you select "Plain Text Encoding [Unicode (UTF-8)] and uncheck the box 
>>>> to make sure ".txt" isn't used as an extension.
>>>> 
>>>> If the gnuplot script was saved correctly, then I suspect you made a 
>>>> mistake in modifying it ... or the instructions you followed contained a 
>>>> mistake.
>>>> 
>>>> We recently updated the instructions for fixing gnuplot under Lion. See 
>>>> the README at the link below.
>>>> 
>>>> http://sourceforge.net/projects/octave/files/Octave%20MacOSX%20Binary/2011-04-21%20binary%20of%20Octave%203.4.0/
>>>> 
>>>> Ben
>>> 
>>> Ben,
>>> 
>>> Yes I did use TextEdit to make the 4 changes to the DYLD_LIBRARY_PATH in 
>>> gnuplot listed at 
>>> http://sourceforge.net/projects/octave/files/Octave%20MacOSX%20Binary/2011-04-21%20binary%20of%20Octave%203.4.0/
>>> 
>>> So I reinstalled gnuplot.app, edited the file gnuplot using emacs and 
>>> re-ran Octave.  This time no error message, AquaTerm started but no plot 
>>> window opened.  I think that I'm only one step away from having this 
>>> working so your help is much appreciated.
>>> 
>>> Bernard
>> 
>> OK, progress.  I included the line
>> 
>> setenv("GNUTERM","x11")
>> 
>> and obtained plots.  However,
>> 
>> setenv("GNUTERM","aqua")
>> 
>> causes Aquaterm to open but nothing is plotted.
>> 
>> Bernard
> 
> Try running gnuplot directly. 
> 
> If the terminal isn't set to aqua by default, type ...
> 
>       set terminal aqua
> 
> Then type
> 
>       plot sin(x)
> 
> Do you get a plot ?
> 
> Ben
> 


Thanks.  I set the terminal to aqua in Gnuplot.  When I entered 

plot sin(x)

Aquaterm starts but nothing happens.

If I set the terminal to x11 and enter the plot command I get the right output.

Bernard