Hello,

Many thanks to you,

Best wishes,
Jeremie



On Mon, Apr 24, 2017 at 6:43 PM, Charles C. Berry <ccberry@ucsd.edu> wrote:

> On Mon, 24 Apr 2017, Jeremie Juste wrote:
>
>
>>
>> Hello,
>>
>> I would like to use :prologue  and epilogue with latex output when using
>> R. Would it be possible to do something like the following?
>>
>>
> [...]
>
>> #+BEGIN_SRC R :results output latex :prologue \\begin{table} :epilogue
>> \\end{table} [...]
>>
>
> [...]
>
>
> Sure. But you do not need to; see my comment at bottom.  Try this:
>
> #+NAME: test1123
> #+HEADER: :prologue cat("\\begin{table}\n")
> #+HEADER: :epilogue cat("\\end{table}\n")
> #+BEGIN_SRC R :results output latex  :session *R* :dir tmp :cache no
> require(xtable)
> print(xtable(data.frame(a=rnorm(10),b=letters[1:10])),floati
> ng.environment=FALSE)
> #+END_SRC
>
> You might be better off using the :post header arg.
>
> Define a src block like this:
>
> #+name: add-table-env
> #+BEGIN_SRC emacs-lisp
> (format "\\begin{table}\n%s\n\\end{table}\n" *this*)
> #+END_SRC
>
> Then use
>
> #+HEADER: :post add-table-env()
>
> in place of the two header lines above.  The advantage is that you can if
> you want do more complicated moidification of the result.
>
> ----
>
> AFAIK, LaTeX has no FALSE environment.
>
> I think what you actually wanted was *not* :prologue and :epilogue but
> this R code:
>
> #+begin_src R
> print(xtable(data.frame(a=rnorm(10),b=letters[1:10])),floati
> ng.environment="table")
> #+end_src
>
>
> HTH,
>
> Chuck
>
>
>
>


-- 
Jérémie Juste