Re: Org-plot/org-babel-gnuplot not working

[John Hendy <jw.hendy@gmail.com>]

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Greetings,


Just took a look at the worg page and gave it a whirl in the style of
Org 8.x. Indeed, the babel/setup section is oudated, and I'm not sure
if 7.9.3f is on the "old style" or new style. I thought there was a
sort of "pre-8.0" version of Org that still adhered to the newer
syntax. In any case, take a look at the attached .org file with my
minimal setup which works successfully for me. Hopefully it's
self-explanatory. I attached my pdf export as well.

I was going to update worg while I was at it... but it seems to be
down for me, at least intermittently. Very odd, as
downforeveryoneorjustme.com says orgmode.org is up... but I can't ping
it and get webpage not available in both Chrome and Firefox??

In any case, hopefully this gets you going and I'll update the worg page.

Please note the section about gnuplot.el. Perhaps at one time this
needed to be downloaded from somewhere else. It shipped with my linux
package, and I downloaded gnuplot right from their site, which also
contains gnuplot.el, so you should be all set as long as you have
gnuplot installed/in your path (try going `$ gnuplot --version` from a
terminal) and copy gnuplot.el to one of your load-path locations.
Redundant to put that in the email as it's in the attached, but for
skimmers who aren't going to download I thought I'd say it twice :)


Best regards,
John

On Mon, Nov 3, 2014 at 7:44 PM, Garreau, Alexandre
<galex-713@galex-713.eu> wrote:
> Hello, when I do `org-plot/gnuplot' on a org-plot figure it says
> “org-plot/gnuplot: Cannot open load file: gnuplot”.
>
> I also tried org-babel-gnuplot, and on an example code, C-c C-c says
> “org-babel-execute-src-block: No org-babel-execute function for
> gnuplot!”.
>
> I’m under Debian Testing (Jessy), have version "GNU Emacs 24.3.1
> (i586-pc-linux-gnu, GTK+ Version 3.12.2) of 2014-09-07 on babin,
> modified by Debian", with Org version 7.9.3f, I’ve installed gnuplot-x11
> package via distro, then gnuplot-mode via distro *and* elpa, then org-babel
> via ELPA (not found in distro), and I put some come in my init.el to
> activate gnuplot, according this:
> <http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-gnuplot.html>.
>
> What could be the cause?

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* setup

- Created the following (saved to =~/Desktop/gnuplot-test/min-config=)

#+begin_src min-config

(add-to-list 'load-path "~/.elisp/org.git/lisp/")
;;(add-to-list 'load-path "~/.elisp/org.git/contrib/lisp")
(add-to-list 'load-path "~/.elisp/site-lisp")

(org-babel-do-load-languages
 'org-babel-load-languages
 '((gnuplot . t)))

#+end_src

- installed gnuplot (Arch linux repo)
- the pkg shipped with a =/usr/share/emacs/site-lisp/gnuplot.el=
  - I downloaded gnuplot-4.6.6 from the official site; it alco contains gnuplot.el
  - I don't think downloading it elsewhere is necessary[fn:1]
- copied this file to =~/.elisp/site-lisp= (which is in load-path above)

Ran this file as follows:
- =$ emacs -Q=
- =M-x load-file RET ~/Desktop/gnuplot-test/min-config=
- =C-x C-f ~/Desktop/gnuplot-test/gnuplot-test.org=
- Tried both on the contents in the next headling:
  - =C-c C-c= on each block, checking .png output
  - =C-c C-e l p= to export to Latex, which also worked

That's it!


* a couple tests

table:

#+tblname: data-table
| x | y1 | y2 |
|---+----+----|
| 0 |  3 |  6 |
| 1 |  4 |  7 |
| 2 |  5 |  8 |


plot code

#+begin_src gnuplot :var data=data-table :export both :file table.png
reset

plot data u 1:2 w lines lw 2 title 'Data Set 1'

#+end_src

#+RESULTS:
[[file:table.png]]


#+begin_src gnuplot :exports both :file functions.png
reset

set title "Putting it All Together"

set xlabel "X"
set xrange [-8:8]
set xtics -8,2,8


set ylabel "Y"
set yrange [-20:70]
set ytics -20,10,70

f(x) = x**2
g(x) = x**3
h(x) = 10*sqrt(abs(x))

plot f(x) w lp lw 1, g(x) w p lw 2, h(x) w l lw 3
#+end_src

#+RESULTS:
[[file:functions.png]]

* Footnotes

[fn:1] For example, googling "gnuplot.el" led me to https://github.com/bruceravel/gnuplot-mode/



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