From: "Charles C. Berry" <ccberry@ucsd.edu>
To: Rainer M Krug <Rainer@krugs.de>
Cc: Bastien <bzg@gnu.org>,
"emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>,
Eric Schulte <schulte.eric@gmail.com>
Subject: Re: [babel][PATCHES] ob-R patches for review
Date: Fri, 16 May 2014 11:22:36 -0700 [thread overview]
Message-ID: <alpine.OSX.2.00.1405161008070.314@charles-berrys-macbook.local> (raw)
In-Reply-To: <m2y4y2f499.fsf@krugs.de>
On Fri, 16 May 2014, Rainer M Krug wrote:
> Sorry for coming back to your suggestions so late, but I did some
> thinking about the approach. Comments inline below.
No problem. I am about to leave town and my email for a couple of weeks,
so I might not be able to reply to further correspondence till June.
Comments inline below.
Chuck
>
> "Charles C. Berry" <ccberry@ucsd.edu> writes:
>
>> On Mon, 12 May 2014, Rainer M Krug wrote:
>>
>>> Eric Schulte <schulte.eric@gmail.com> writes:
>>>
[...]
[Rainer writes]
>>> My idea is to have all R code in one directory and to let ESS load it
>>> upon initialization of ESS (which is a dependency of running R from org
>>> anyway, if I am not mistaken).
>>
[Chuck]
>> Not quite. You can run R src blocks without (require 'ess) if they require
>> no session. (I do not claim that anyone actually runs R src blocks who
>> lacks a working ESS installation, just saying...)
>
[Rainer again]
> Hm - would it then be possible to add ESS as a requirement for running R
> code, as it is already mentioned on [1] as a requirement?
I'd be surprised if it would have any impact on users. Who uses R and
org-mode without ESS? But as you say it is listed as a requirement.
[...]
>
> I am now leaning towards the following approach:
>
> New behavior (environment):
> 1) Define the R code in emacs variables, i.e. customizable in emacs.
> 2) Define a function to load the code into an R environment - not customizable.
>
> ## upon creation of the R session (i.e. only once for each R session)
Maybe wait till the first variable transfer is called, if it ever is.
>
> 3) use the load function to load the code from the emacs variables into
> an R environment called "org:functions"
> 4) load all .R files in the directory ~/.orgFunctions/ into
> "org:functions". This will mean that when functions of the same name as
> loaded earlier will be overwritten, i.e. the functions are customizable
> by R code only.
>
> ## before variable transfer at each execution of a code block
Only if there is a variable transfer, of course.
>
> 5) source all .R files in the directory RWorkingDirectory/.orgFunctions/
> i.e. they are not loaded into a specific environment. Reasoning: further
> customization possible, kind of an "R package light" approach.
>
> 6) use the load functions (as defied initially in (4), (3) or in () from
> to load the variables. If they are loaded into an environment or not
> depends on the definition of the functions.
>
> Concerning old versus new behavior, I would actually suggest to put this
> into the R functions: one could add an argument "variablesInEnvironment"
> which would, if set, be the name of the environment, i.e. default value
> "org:variables", if NULL it would load into .GlobalEnv, i.e. the old
> behaviour. In org, one could have a variable
> org-babel-R-variable-transfer-type (or whatever the proper name should
> be) and to make it user configurable:
>
> - null :: old behaviour
> - "org:variables" (default) :: variables into environment called
> "org:variables"
> - other string :: name of the environment to be used
>
> As stated earlier, as I think that name clashes are more unlikely with
> the new approach, I would suggest to make "org:variables" the default.
>
The above sounds good.
If you do not wish to implement the `org-babel-R-assign-elisp-function'
variable approach I suggested, I'll make it a TINYCHANGE when I return in
June. It will not impact on what you propose. However, if your
implementation makes it possible for arbitrary elisp variables to be
handled in R - I might not bother.
[...]
>>>
>>> True - but I like the simplicity of being able to customize the
>>> behavior of org-babel-R by writing an R function without having to thin
>>> about elisp. But maybe there is a way of doing both...
>>>
>>
>> noweb will do it. Quote the chunk like this:
>>
>> #+BEGIN_SRC emacs-lisp :noweb yes :tangle elisp-R.el
>> (setq rlines "
>> <<r-code>>")
>> #+END_SRC
>
> I must admit, I have never used macros and noweb expansion...
>
> If you could give me your opinions on this approach, I would look into
> implementing it.
It is just a labor saving suggestion for you -- it would not show up
in the final elisp. Put all your elisp and R code in src blocks in a
*.org file. You can edit and format the R code in R src blocks and
likewise the elisp. A src block like the one above will import the R
into elisp as a string. You only tangle the elisp. So the benefit is
you have ease of editting R and writing unit tests for it for R code
that appears in elisp.
IMO, noweb is a good way to mix languages in org-mode. I use the R
`inline' package to write C functions that R can call. R needs the code as
strings. I write the C code in C src blocks then assign it in as an R
character string in an R src block. I can write an R wrapper and unit test
for each little snippet of C code, then when it all looks good join up the
snippets by putting multiple noweb references on successive lines.
>
>
> Footnotes:
> [1] http://orgmode.org/worg/org-contrib/babel/languages.html
>
[...]
next prev parent reply other threads:[~2014-05-16 18:23 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-29 12:43 [babel][PATCHES] ob-R patches for review Rainer M Krug
2014-04-29 18:15 ` Charles Berry
2014-04-30 12:28 ` Rainer M Krug
2014-04-30 22:49 ` Charles C. Berry
2014-05-01 9:10 ` Rainer M Krug
2014-05-07 10:27 ` Eric Schulte
2014-05-08 2:26 ` Charles Berry
2014-05-08 10:02 ` Rainer M Krug
2014-05-09 9:11 ` Rainer M Krug
2014-05-09 12:02 ` Rainer M Krug
2014-05-08 9:57 ` Rainer M Krug
2014-05-09 13:03 ` Bastien
2014-05-09 13:45 ` Rainer M Krug
2014-05-09 14:34 ` Eric Schulte
2014-05-12 8:33 ` Rainer M Krug
2014-05-12 12:23 ` Suvayu Ali
2014-05-12 12:41 ` Rainer M Krug
2014-05-12 14:01 ` Queestion concerning lists - was: " Rainer M Krug
2014-05-12 15:23 ` Eric Schulte
2014-05-12 15:21 ` Eric Schulte
2014-05-12 19:08 ` Rainer M Krug
2014-05-12 22:05 ` Charles C. Berry
[not found] ` <m2y4y2f499.fsf@krugs.de>
2014-05-16 18:22 ` Charles C. Berry [this message]
2014-06-06 16:11 ` Eric Schulte
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.OSX.2.00.1405161008070.314@charles-berrys-macbook.local \
--to=ccberry@ucsd.edu \
--cc=Rainer@krugs.de \
--cc=bzg@gnu.org \
--cc=emacs-orgmode@gnu.org \
--cc=schulte.eric@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.