Re: Problem with simple graphics

[Bernard Abramson]

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