Re: Trouble with Tables and Python

[John Kitchin <jkitchin@andrew.cmu.edu>]

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I should probably confess to having this in my .emacs files:

;; language specific headers. I think this comes before the defaults
(setq org-babel-default-header-args:emacs-lisp
      (cons '(:results . "value replace")
        (assq-delete-all :results org-babel-default-header-args)))

;; set default :results to output
(setq org-babel-default-header-args
      (cons '(:results . "output replace")
        (assq-delete-all :results org-babel-default-header-args)))

;; set default exports to both code and results
(setq org-babel-default-header-args
      (cons '(:exports . "both")
        (assq-delete-all :exports org-babel-default-header-args)))

These things change the default behaviors for the results. I almost always
want output as results, and not value (the regular default), except when
coding in emacs-lisp where the value make sense to me.

That would certainly be a point of confusion ;)

I also find you want :results output raw

if you are printing a table or printing org. This is something I have never
found satisfying, especially for long tables or outputs it is tedious to
have to delete the old output by hand before rerunning it. I have not found
any other sets of options that do what I want, e.g. changing raw to org
results in the section being wrapped in #+begin_org/end_org, which is
usually not what I want. I usually do want the raw output.

I hope that clarifies where some of your differences might be coming from.

John

-----------------------------------
John Kitchin
Associate Professor
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
http://kitchingroup.cheme.cmu.edu



On Tue, Apr 15, 2014 at 5:18 PM, Martin Schöön <martin.schoon@gmail.com>wrote:

> This is my first post here...
>
> I have been using org-mode as a pure TODO-tool for some time but this
> winter I realised it could be used for much more and I have been
> experimenting with mixing in LaTeX and Python for fun and because I find
> literate programming a particularly sane idea (I am a HW engineer).
>
> Less than I week ago I started to look into using tables for input and
> output to/from Python scripts. I was inspired by something I found at
> http://kitchingroup.cheme.cmu.edu/ . The enclosed example 1 file is a
> pruned version of the org-file I found there. If I run the embedded Python
> script using C-c C-c I don't get the table shown in the example. Instead I
> get "none" on the row following "#+RESULTS:"
>
> If I change ":results raw" to ":results output" I do get the table but
> 'wrapped' in "#+begin_example" and "#+end_example" as shown in  the
> enclosed example 2 file. I have done some further testing/changes in that
> file (adding some stuff to the top of the file and changing the formatting
> of the print statements) none of which changed the extra wrapping of the
> table. When I export to LaTeX -> PDF the table does not show up in the
> end result.
>
> Let's move over to the third example file and the real mystery. This all
> my own code. Reading data from the first table works just fine and the same
> goes for the calculations. The output table, however, is different from
> that of example 2. The 'wrapper' is gone but each row is starting with ":
> ". Where does that come from? Why does it differ from example 2? If my
> results differ from someone else's (different install/versions etc) --
> OK. But how can I get differences like this on my own? To my  un-trained
> eyes the print statements of examples 2 and 3 look very similar. (But, the
> first things that go blind are the eyes... probably something blatantly
> obvious once pointed out to me.)
>
> OS: #! Linux (Based on Debian stable, 64-bit)
> Emacs: 23.4.1
> Org-mode: 8.2.5h
> Python: 2.7.3
>
> TIA,
> --
> Martin Schöön
>
> http://hem.bredband.net/b262106/index.html
>

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