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Re: [O] using a table from one org-file as a variable in a code block in

From: Eric Schulte
Subject: Re: [O] using a table from one org-file as a variable in a code block in another org-file
Date: Mon, 26 Nov 2012 10:32:02 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

John Kitchin <address@hidden> writes:

> Hi everyone,
> I have been using tables as variables for codeblocks on an org-file, e.g.
> #+tblname: class-data
> | user      | oxide | xc |
> | jkitchin  | TiO2  | LDA|
> ...
> #+BEGIN_SRC python :var data=class-data
> from pylab import *
> import numpy as np
> vol = [x[1]  if x[1] != '' else np.nan for x in data]
> B = [x[2] if x[2] != '' else np.nan for x in data  ]
> scatter(vol, B)
> xlabel('Volume ($\AA^3$)')
> ylabel('Bulk modulus (GPa)')
> title('All polymorphs of all oxides for all functionals')
> show()
> This is a fantastic feature, since I can have some code that is
> expensive to run create the table, but then have analysis code that is
> quick, since it only reads the table.
> But, sometimes the tables are defined in other org-files.  Is there a
> way to specify a table from another org-file in the variable header?
> Something like this would be pretty handy:
> :var ./org-file.org::class-data
> Especially if I could click on it, and have it open the other org-file
> with point at the table!
> Any thoughts? Thanks,

Hi John,

This feature does exist, and your guess at the syntax is almost correct.
To reference a variable named foo1 in a file named foo.org you would use
the following syntax, ":var data=foo.org:foo1".

See the attached foo.org and bar.org files for an example (in order to
work they must be in the same directory).

I'll make a note to mention this functionality in the documentation.


Attachment: foo.org
Description: Text Data

Attachment: bar.org
Description: Text Data

> 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

Eric Schulte

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