* formatting org-babel output
@ 2013-05-22 11:18 Joe Bogner
2013-05-22 13:12 ` Eric Schulte
2013-05-22 13:14 ` Jay Kerns
0 siblings, 2 replies; 4+ messages in thread
From: Joe Bogner @ 2013-05-22 11:18 UTC (permalink / raw)
To: emacs-orgmode
I am using org-mode and babel with R for reproducible research. I
would like certain numbers in the output tables to be formatted for
easier reading - such as eliminating decimals and adding commas for
readability.
The best I came up with is to use a TBLFM line at the bottom of my
results table using a function I found on the ElispCookbook on
emacswiki. A simple example is below that doesn't require R to
reproduce.
It's a two step process currently to execute the R code in org-babel
and then jump to the result table TBLFM line and Ctrl+c Ctrl+c to
format the table
Is there a better way to format table outputs for simple things like
currency? I would be content if it's only during the org export
process too
#+BEGIN_SRC emacs-lisp
(defun group-number (num &optional size char)
"Format NUM as string grouped to SIZE with CHAR."
; Based on code for `math-group-float' in calc-ext.el
(let* ((size (or size 3))
(char (or char ","))
(str (if (stringp num)
(number-to-string (string-to-number
(replace-regexp-in-string "," "" num)))
(number-to-string num)))
(pt (or (string-match "[^0-9a-zA-Z]" str) (length str))))
(while (> pt size)
(setq str (concat (substring str 0 (- pt size))
char
(substring str (- pt size)))
pt (- pt size)))
str))
#+END_SRC
#+RESULTS:
: group-number
#+NAME: example-table
| 100000000.55 | a |
| 23000 | b |
| 3000 | c |
| 40004 | e |
| 5000 | 3 |
This is the table I want formatted
#+BEGIN_SRC emacs-lisp :var data=example-table
data
#+END_SRC
#+RESULTS:
| 100,000,000.55 | a |
| 23,000 | b |
| 3,000 | c |
| 40,004 | e |
| 5,000 | 3 |
#+TBLFM: $1='(group-number $1)'
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: formatting org-babel output
2013-05-22 11:18 formatting org-babel output Joe Bogner
@ 2013-05-22 13:12 ` Eric Schulte
2013-05-22 16:27 ` Joe Bogner
2013-05-22 13:14 ` Jay Kerns
1 sibling, 1 reply; 4+ messages in thread
From: Eric Schulte @ 2013-05-22 13:12 UTC (permalink / raw)
To: Joe Bogner; +Cc: emacs-orgmode
[-- Attachment #1: Type: text/plain, Size: 1015 bytes --]
Joe Bogner <joebogner@gmail.com> writes:
> I am using org-mode and babel with R for reproducible research. I
> would like certain numbers in the output tables to be formatted for
> easier reading - such as eliminating decimals and adding commas for
> readability.
>
> The best I came up with is to use a TBLFM line at the bottom of my
> results table using a function I found on the ElispCookbook on
> emacswiki. A simple example is below that doesn't require R to
> reproduce.
>
> It's a two step process currently to execute the R code in org-babel
> and then jump to the result table TBLFM line and Ctrl+c Ctrl+c to
> format the table
>
> Is there a better way to format table outputs for simple things like
> currency? I would be content if it's only during the org export
> process too
>
You can use the recently introduced :post header argument to
post-process the output of a code block. The following example
demonstrates the use of this argument to apply your number-grouper
function to table output.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: post-processing.org --]
[-- Type: text/x-org, Size: 1966 bytes --]
#+BEGIN_SRC emacs-lisp :results silent
(defun group-number (num &optional size char)
"Format NUM as string grouped to SIZE with CHAR."
;; Based on code for `math-group-float' in calc-ext.el
(let* ((size (or size 3))
(char (or char ","))
(str (if (stringp num)
(number-to-string (string-to-number
(replace-regexp-in-string "," "" num)))
(number-to-string num)))
(pt (or (string-match "[^0-9a-zA-Z]" str) (length str))))
(while (> pt size)
(setq str (concat (substring str 0 (- pt size))
char
(substring str (- pt size)))
pt (- pt size)))
str))
#+END_SRC
The following code block will call the group-number Emacs Lisp
function on every cell in its input argument which is a number.
#+name: table-number-grouper
#+BEGIN_SRC emacs-lisp :var data='()
(mapcar (lambda (row)
(if (equalp row 'hline) 'hline
(mapcar (lambda (cell) (if (numberp cell) (group-number cell) cell))
row)))
data)
#+END_SRC
Here's a simple shell code block which produces the table (this is a
stand in for your R code block).
#+begin_src sh
cat <<EOF
100000000.55 a
23000 b
3000 c
40004 e
5000 3
EOF
#+end_src
#+RESULTS:
| 100000000.55 | a |
| 23000 | b |
| 3000 | c |
| 40004 | e |
| 5000 | 3 |
Above is the poorly formatted output of your block. Below we add the
"post" header argument to your block, which will use the
"table-number-grouper" code block above to post-process your results.
#+begin_src sh :post table-number-grouper(*this*)
cat <<EOF
100000000.55 a
23000 b
3000 c
40004 e
5000 3
EOF
#+end_src
#+RESULTS:
| 100,000,000.55 | a |
| 23,000 | b |
| 3,000 | c |
| 40,004 | e |
| 5,000 | 3 |
[-- Attachment #3: Type: text/plain, Size: 55 bytes --]
Cheers,
--
Eric Schulte
http://cs.unm.edu/~eschulte
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: formatting org-babel output
2013-05-22 11:18 formatting org-babel output Joe Bogner
2013-05-22 13:12 ` Eric Schulte
@ 2013-05-22 13:14 ` Jay Kerns
1 sibling, 0 replies; 4+ messages in thread
From: Jay Kerns @ 2013-05-22 13:14 UTC (permalink / raw)
To: Joe Bogner; +Cc: emacs-orgmode
Hi Joe,
On Wed, May 22, 2013 at 7:18 AM, Joe Bogner <joebogner@gmail.com> wrote:
> I am using org-mode and babel with R for reproducible research. I
> would like certain numbers in the output tables to be formatted for
> easier reading - such as eliminating decimals and adding commas for
> readability.
>
[snip]
Have you considered doing your formatting in R before it ever gets to
the org table? The format function is very powerful. For instance,
> format(163328361.2423, nsmall = 2, big.mark =",")
[1] "163,328,361.24"
Just an idea.
--
Jay
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: formatting org-babel output
2013-05-22 13:12 ` Eric Schulte
@ 2013-05-22 16:27 ` Joe Bogner
0 siblings, 0 replies; 4+ messages in thread
From: Joe Bogner @ 2013-05-22 16:27 UTC (permalink / raw)
To: Eric Schulte; +Cc: emacs-orgmode
Eric - That is perfect. It's exactly what I was looking for. Thank you
for very much!
Jay - format is a good option too.I also found the scales packages
> scales::comma(scales::dollar(55555))
[1] "$55,555"
In the end, the org-mode post solution feels more automatic and in the
right layer - since I'm using org-mode for presentation of the R
results.
Thanks again
Joe
On Wed, May 22, 2013 at 9:12 AM, Eric Schulte <schulte.eric@gmail.com> wrote:
> Joe Bogner <joebogner@gmail.com> writes:
>
>> I am using org-mode and babel with R for reproducible research. I
>> would like certain numbers in the output tables to be formatted for
>> easier reading - such as eliminating decimals and adding commas for
>> readability.
>>
>> The best I came up with is to use a TBLFM line at the bottom of my
>> results table using a function I found on the ElispCookbook on
>> emacswiki. A simple example is below that doesn't require R to
>> reproduce.
>>
>> It's a two step process currently to execute the R code in org-babel
>> and then jump to the result table TBLFM line and Ctrl+c Ctrl+c to
>> format the table
>>
>> Is there a better way to format table outputs for simple things like
>> currency? I would be content if it's only during the org export
>> process too
>>
>
> You can use the recently introduced :post header argument to
> post-process the output of a code block. The following example
> demonstrates the use of this argument to apply your number-grouper
> function to table output.
>
>
>
> Cheers,
>
> --
> Eric Schulte
> http://cs.unm.edu/~eschulte
>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-05-22 11:18 formatting org-babel output Joe Bogner
2013-05-22 13:12 ` Eric Schulte
2013-05-22 16:27 ` Joe Bogner
2013-05-22 13:14 ` Jay Kerns
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