Re: Empty plot

[John B. Thoo]

On Dec 17, 2010, at 5:19 AM, Ben Abbott wrote:

> On Dec 16, 2010, at 10:39 PM, John B. Thoo wrote:
> 
>> Hi.  I'm sorry if this is a FAQ, but I haven't been able to find an answer.
>> 
>> I'm using Octave 3.2.3 on Mac OS X 10.6.4 in X11.  When I try to plot, I get 
>> an empty plot window and this:
>> 
>> octave-3.2.3:1> getenv ("GNUTERM")
>> ans = x11
>> octave-3.2.3:2> x = 0:0.1:pi;
>> octave-3.2.3:3> plot (x, sin(x))
>> octave-3.2.3:4> 
>> gnuplot> set palette file "-" binary record=64 using 1:2:3:4;
>>                                                           ^
>>        line 0: Gray scale not sorted in gradient.
>> 
>> 
>> octave-3.2.3:4>
>> 
>> When I start gnuplot on its own, I see that I have Version 4.2 patchlevel 5.
>> 
>> Any help would be appreciated.  Thanks.
>> 
>> ---John.
>> 
>> -----------------------------------------------------------------------
>> "There are no atheists in foxholes."
>> ---Fr. William T. Cummings, M.M. (WWII, Philippines)
>> [_The Grunt Padre_, CMJ Marian Pub., p. 56]
> 
> http://atheism.about.com/od/atheismmyths/a/AtheistsFoxhole.htm
> 
> John, please tell us where you got your Octave. Was it from MacPorts, Fink, 
> Sourceforge, or somewhere else?
> 
> Also it is possible to have more than one version of gnuplot. Please check 
> which one Octave is using by typing ...
> 
>       __gnuplot_version__
> 
> Since you're set up to use X11, please make sure the X11.app is running 
> before you try to plot. I've had some troubles in X11 on MacOS X, and often 
> have to quit X11 and start it again.
> 
> Ben

Hello, Ben.  Thanks for your reply.

I'm using Thomas Treichi's binary of Octave from sourceforge.  The thing is 
that I could plot in X11 using Thomas's previous version on my former PowerBook 
12".  It was only after upgrading to Octave 3.2.3 i386 because I had gotten a 
MacBook Pro that plotting broke.

I had asked about this previously

<http://octave.1599824.n4.nabble.com/set-palette-file-quot-quot-binary-record-64-using-1-2-3-4-td2292036.html>

but didn't get any reply then.  Unfortunately, I haven't been able to figure 
out the problem since, either.

By the way, this is what Octave returns for gnuplot version:

octave-3.2.3:1> __gnuplot_version__
ans = 4.2.5
octave-3.2.3:2>

Thanks again for your reply.

---John.

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