From: "L.C. Karssen" <lennart@karssen.org>
To: Org Mode <emacs-orgmode@gnu.org>
Subject: Trying to use :post header argument to set #+ATTR_LATEX: line
Date: Mon, 22 Oct 2018 16:43:45 +0200 [thread overview]
Message-ID: <3f496b8f-3ffb-af0d-278a-21669e4e0aca@karssen.org> (raw)
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Dear list,
I'd like to create several tables from R and export those to a LaTeX
document. Because only input variable differs for the R code that
generates the tables, I thought I could use the :post header argument to
add the #+ATTR_LATEX: line I need to each of the outputs of my R source
code blocks.
I tried to follow the Org manual (section 14.8.2.27), but that doesn't
seem to work. My R results blocks all get colons in front of the output
and if I set :results drawer, I get the following error:
org-babel-R-evaluate-session: Wrong type argument: listp,
followed by a double quoted string containing the data, excluding the
#+ATTR_LATEX line.
I have attached an example Org file that illustrates what I am trying to
achieve and where it goes wrong. I tested this using Emacs 26.1 of
2018-05-29 and Org 9.1.13 from elpa (2018-06-25).
In short, I'm trying the following:
#+name: attr_wrap
#+begin_src R :var data="" :results output
cat("#+ATTR_LATEX: :environment tabularx :width \\textwidth :align
Xrrr", "\n")
data
#+end_src
#+name: create_table2
#+begin_src R :rownames yes :colnames yes :var brand="Mazda" :post
attr_wrap(data=*this*)
mtcars[grepl(brand, rownames(mtcars)), c("mpg", "cyl", "disp")]
#+end_src
And call it:
#+call: create_table2(brand="Toyota")
#+RESULTS:
: #+ATTR_LATEX: :environment tabularx :width \textwidth :align Xrrr
: X mpg cyl disp
: 1 Toyota Corolla 33.9 4 71.1
: 2 Toyota Corona 21.5 4 120.1
Note that the whole results block is preceded by a colon, instead
of the table being formatted by Org.
Thanks for any help!
Best regards,
Lennart.
--
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
L.C. Karssen
's-Hertogenbosch
The Netherlands
lennart@karssen.org
http://blog.karssen.org
GPG key ID: A88F554A
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#+TITLE: Testing the :post header arg
# Set some Org Babel values for the whole document
#+PROPERTY: header-args:R :session *myR*
* Introduction
In this document I explore the use of the =:post= header argument
for Org mode source code blocks. My aim is to create several tables
for export to LaTeX and have the =ATTR_LATEX= blocks automatically
added to the output of the source code blocks.
For these tests we wil use the =mtcars= data set that comes with R.
* Testing the =:post= header argument
The following block is supposed to be used in a =:post= call to set
the =ATTR_LATEX= line.
#+name: attr_wrap
#+begin_src R :var data="" :results output
cat("#+ATTR_LATEX: :environment tabularx :width \\textwidth :align Xrrr", "\n")
data
#+end_src
The idea is to use this as a named src block so it can be reused for
each table I want to create (here still without =:post= to show the
regular output).
#+name: create_table
#+begin_src R :rownames yes :colnames yes :var brand="Mazda"
mtcars[grepl(brand, rownames(mtcars)), c("mpg", "cyl", "disp")]
#+end_src
This works using =#+call:=:
#+call: create_table(brand="Hornet")
#+RESULTS:
| | mpg | cyl | disp |
|-------------------+------+-----+------|
| Hornet 4 Drive | 21.4 | 6 | 258 |
| Hornet Sportabout | 18.7 | 8 | 360 |
Define a slightly different src block that actually uses the =:post=
header argument:
#+name: create_table2
#+begin_src R :rownames yes :colnames yes :var brand="Mazda" :post attr_wrap(data=*this*)
mtcars[grepl(brand, rownames(mtcars)), c("mpg", "cyl", "disp")]
#+end_src
And call it:
#+call: create_table2(brand="Toyota")
#+RESULTS:
: #+ATTR_LATEX: :environment tabularx :width \textwidth :align Xrrr
: X mpg cyl disp
: 1 Toyota Corolla 33.9 4 71.1
: 2 Toyota Corona 21.5 4 120.1
Note that the whole results block is preceded by a colon, instead
of being formatted by Org.
Using the Shell code from the Org manual doesn't work either, it
adds a comma in front of the =#+ATTR_LATEX= line.
#+name: attr_wrap2
#+begin_src sh :var data="" :results output
echo "#+ATTR_LATEX: :environment tabularx :width \\textwidth :align Xrrr"
echo "$data"
#+end_src
New =create_table= function:
#+name: create_table3
#+begin_src R :rownames yes :colnames yes :var brand="Mazda" :post attr_wrap2(data=*this*)
mtcars[grepl(brand, rownames(mtcars)), c("mpg", "cyl", "disp")]
#+end_src
And call it:
#+call: create_table3(brand="Toyota")
#+RESULTS:
: #+ATTR_LATEX: :environment tabularx :width \textwidth :align Xrrr
: Toyota Corolla 33.9 4 71.1
: Toyota Corona 21.5 4 120.1
Observe that now the column names have completely disappeared.
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next reply other threads:[~2018-10-22 14:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-22 14:43 L.C. Karssen [this message]
2018-10-22 16:42 ` Trying to use :post header argument to set #+ATTR_LATEX: line Berry, Charles
2018-10-23 20:12 ` L.C. Karssen
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