Re: org-babel-gnuplot broken today?

From: Nigel Beck <me@nigelbeck.com>
To: John Hendy <jw.hendy@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: org-babel-gnuplot broken today?
Date: Tue, 26 Oct 2010 18:22:22 -0400	[thread overview]
Message-ID: <87sjzsmw69.fsf@asusbsd.danakil.selfip.com> (raw)
In-Reply-To: <AANLkTi=0AMxsj0pCXL3ZMrxgBhSQ_VQ6P5adnMtRLdSc@mail.gmail.com> (John Hendy's message of "Tue, 26 Oct 2010 16:06:14 -0500")

John - thanks for the quick reply (and, btw, the very useful tutorial).

I ought to have noted that the example works fine when invoked directly
from the command line, with the only change being that I move the data
into a file (mainly because I don't know the correct gnuplot syntax for
putting table data into a variable!).

I haven't updated gnuplot since installing it, so I believe the org-mode
<-> gnuplot unfriendliness lies in some effect that a recent pull of
7.01trans has had. (I did updated emacs-w3m from cvs the other day, so I
suppose thats another possible source of error, but it seems unlikely).

I agree that it appears that the table data being handed to gnuplot
from org-mode is somehow being formatted in a way that gnuplot does not understand.

John Hendy <jw.hendy@gmail.com> writes:

> On Tue, Oct 26, 2010 at 3:10 PM, Nigel Beck <me@nigelbeck.com> wrote:
>
>     I refreshed today 7.01trans and noticed I couldn't get my gnuplots to
>     plot anymore: data from a table within the org file is no longer
>     digested nicely by gnuplot.
>
> That's odd. I wrote the tutorial and thus my heart skipped a beat for a moment!
>  
>
>     To test, I used the snippet below from the worg
>     http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-gnuplot.php:
>
>     ** Data Table Plot
>    
>     Plotting data points from a table could look like this:
>     #+tblname: basic-plot
>
> ---- 8< ----
>  
>
>     Exporting or executing the gnuplot piece, Gnuplot (Gnuplot 4.4 patch
>      level 1) complains:
>    
>     gnuplot> plot data u 1:2 w p lw 2 title 'x vs. y1', \
>
> ---- 8< ----
>  
>
>             No data in plot
>
>     So of course no basic-plot.png is created....
>    
>     As far as I know, my gnuplots were happy sometime within the past week
>     refreshing org-mode from git basically daily...
>
> That's odd indeed. I copied and pasted your exact table and code from the email and was able to generate the plot. The error is
> quite odd. It almost makes me wonder if something is different about how gnuplot is receiving the data. Like a syntax error or
> something. I would say that at this point it's not the table or code, per se, since I can generate the plot. Hopefully someone will
> chime in with more experience who may have seen this error?
>
> One thing to try in the meantime... Gather up some gnuplot test data file and try to run it from the command line perhaps? It would
> at least be one way to see if it's working outside of org-mode?
>
> Best regards,
> John
>  
>
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-- 
Nigel Beck
http://www.nigelbeck.com
+1-323-NDUGU-ME (323-638-4863)