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Re: [O] Selectively export RESULTS


From: Matthew Landis
Subject: Re: [O] Selectively export RESULTS
Date: Fri, 2 Mar 2012 17:24:44 +0000 (UTC)
User-agent: Loom/3.14 (http://gmane.org/)

 <cberry <at> tajo.ucsd.edu> writes:

> 
> Eric Schulte <eric.schulte <at> gmx.com> writes:
> 
> >>> Does this do what you want?

> >
> > Have you looked at the :cache header argument [1], from my understanding
> > of your use case it should be exactly what you are after.
> >
> 
> Its a step in the right direction.
> 
> It seems I have to set :cache yes on every block I use before I invoke
> it. My attempt to use a buffer-wide PROPERTY setting for cache did not
> pan out. 
> 

I'd like to put in a vote for the kind of functionality that cberry is 
describing.  I have a very similar situation - a large org file that uses R to 
do a lot of time consuming data manipulation and model fitting, resulting in 
statistical tables and graphs.  I run a lot of the code blocks as I'm writing 
it, resulting in :results in the org file.  

In the end, I'd like to export the org file to html or ODT, but I'd like to be 
able to choose buffer-wide whether to rerun all of the code blocks or just use 
the results that are already in the buffer.  I tried setting #+PROPERTY: eval 
no 
at the top of the buffer in the hopes that on export, it would ignore all my 
code blocks and just incorporate the :results, but this was ignored and my code 
blocks were rerun.

The cache argument only partially deals with the problem, as this example 
illustrates:

#+begin_src R :session :cache yes
x <- rnorm(100)
#+end_src

#+begin_src R :session :results graphics :exports results :file hist.png :cache 
yes
hist(x)
#+end_src

Now after the first export, I change code block 2, but not code block 1.  If I 
understand how cache works correctly, code block 2 will be rerun, but it will 
fail because code block 1 is not rerun, so x doesn't exist in the R session.  

For this reason, I'd prefer to be able to decide whether to re-run on a file-
wide basis.

Many thanks to all of you who have created such an amazing system.  

M





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