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From: tsd@tsdye.com (Thomas S. Dye)
To: Eric Luo <eric.wenbl@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: was this intentional with the default header ":results value"
Date: Sat, 14 Jul 2012 17:33:39 -1000	[thread overview]
Message-ID: <m1r4sdaeb0.fsf@tsdye.com> (raw)
In-Reply-To: <87d33xn8iu.fsf@gmail.com> (Eric Luo's message of "Sun, 15 Jul 2012 09:00:09 +0800")

Hi Eric,

I don't know any way to do this in Org-mode.  Here is a workaround in R
that might do what you want.

#+name: luo
#+BEGIN_SRC R :results output org
  library(ascii)
  df <- data.frame(c1="123456789123456789000",c2=2)
  df$c1 <- as.vector(df$c1)
  print(ascii(df),type="org")
#+END_SRC

#+RESULTS: luo
#+BEGIN_ORG
|   | c1                    | c2   |
|---+-----------------------+------|
| 1 | 123456789123456789000 | 2.00 |
#+END_ORG

All the best,
Tom

Eric Luo <eric.wenbl@gmail.com> writes:

> tsd@tsdye.com (Thomas S. Dye) writes:
>
> Thanks, it's clear to me with the difference between "value" and
> "output" now.
>
> whether there is a way to tell emacs-lisp that "123456789123456789" is a
> string rather than a number.
>
> emacs-lisp handles the output as expected if the c1 has any character
> other than numbers as the following.
> ,----
> | #+BEGIN_SRC R
> |   df <- data.frame(c1="c123456789123456789",c2=2)
> |   df$c1 <- as.vector(df$c1)
> |   df
> | #+END_SRC
> | 
> | #+RESULTS:
> | | c123456789123456789 | 2 |
> | 
> `----
>
>> Aloha Eric,
>>
>> Eric Luo <eric.wenbl@gmail.com> writes:
>>
>>> Hi, 
>>> Why in the following code block, c1 was printed as scientific notation
>>> rather then characters.
>>> ,----
>>> | 
>>> | #+BEGIN_SRC R :results value
>>> |   df <- data.frame(c1="123456789123456789",c2=2)
>>> | #+END_SRC
>>> | 
>>> | #+RESULTS:
>>> | | 1.2345678912345678e+17 | 2 |
>>> `----
>>
>> With :results value the results are passed from the source language into
>> emacs-lisp and then displayed in the buffer.  So, the representation of
>> things like very large numbers depends on how that was done in
>> emacs-lisp, independent of the source language conventions.  In this
>> case, I suspect the number was written with a formatting string and ‘%g’
>> which uses scientific notation if that is a shorter representation.
>>
>>
>>> But if the header :results output, the result was expected.
>>> ,----
>>> | 
>>> | #+BEGIN_SRC R :results output 
>>> |   df <- data.frame(c1="123456789123456789",c2=2)
>>> |   df
>>> | #+END_SRC
>>> | 
>>> | #+RESULTS:
>>> | :                   c1 c2
>>> | : 1 123456789123456789  2
>>> `----
>>>
>>
>> With :results output the results aren't translated into emacs-lisp.
>> Instead, the output from the source language is collected and displayed
>> in the buffer.  Thus, the output conventions of the source language are
>> respected. 
>>
>> hth,
>
>
>

-- 
Thomas S. Dye
http://www.tsdye.com

next prev parent reply	other threads:[~2012-07-15  3:33 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-13 14:24 was this intentional with the default header ":results value" Eric Luo
2012-07-14 16:44 ` Thomas S. Dye
2012-07-15  1:00   ` Eric Luo
2012-07-15  3:33     ` Thomas S. Dye [this message]
2012-07-15  3:54       ` Thomas S. Dye
2012-07-15  9:18         ` Eric Luo

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