Hi Nigel, Org-mode gnuplot code blocks do make use of user variables [1] for passing arguments into gnuplot. I believe that this feature may only be available in later versions of gnuplot. I'm using gnuplot 4.4 locally and I've had no problems using gnuplot from Org-mode code blocks which I do most every day.
the syntax for defining variables is fairly simple, try the following directly in the gnuplot terminal, if your gnuplot does have variable support it should graph a straight line of y=10 #+begin_src gnuplot a=10 plot a #+end_src Best -- Eric Nigel Beck <m...@nigelbeck.com> writes: > 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.he...@gmail.com> writes: > >> On Tue, Oct 26, 2010 at 3:10 PM, Nigel Beck <m...@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 >> >> >> _______________________________________________ >> Emacs-orgmode mailing list >> Please use `Reply All' to send replies to the list. >> Emacs-orgmode@gnu.org >> http://lists.gnu.org/mailman/listinfo/emacs-orgmode >> >> _______________________________________________ >> Emacs-orgmode mailing list >> Please use `Reply All' to send replies to the list. >> Emacs-orgmode@gnu.org >> http://lists.gnu.org/mailman/listinfo/emacs-orgmode Footnotes: [1] http://www.gnuplot.info/docs/gnuplot.html#x1-3100013.4 _______________________________________________ Emacs-orgmode mailing list Please use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
