Aloha Eric Fraga,

Is it OK with you to put a modified version of the emacs-lisp code for  
LaTeX GANTT charts in the Library of Babel?  I agree with Eric S. (see  
below) that this would be the best location for it in the context of  
org-article.cls.

You can see my version of your code here:

http://orgmode.org/worg/org-contrib/babel/examples/article-class.php#sec-3_4_5_1

My changes to your code were minor.

1) I've taken off the header arguments.   AFAICT, header arguments in  
the Library of Babel aren't used as the defaults when the function is  
called, so there is no reason to have them there in this context.

2) I've taken out the code that generates #+begin_latex and # 
+end_latex.  This makes it possible to use the function in the Org- 
mode buffer:

#+lob: elispgantt(table=gantttesttable) :results output latex

and also within a LaTeX source code block:

#+lob: elispgantt(table=gantttesttable) :results output raw

Thanks very much for the useful code, BTW.  We're writing an annotated  
bibliography of Hawaiian history at work and I'm pretty sure we can  
use a GANTT chart to show a timeline of historians over the last  
century and a half.

All the best,
Tom

On Oct 17, 2010, at 11:25 AM, Eric Schulte wrote:

> Hi Tom,
>
> I think this code should live in the main library-of-babel.org  
> file.  I
> don't see any reason why it would be overwritten in that file, and  
> that
> way it will be available by default for anyone who already loads the
> library of babel.
>
> Best -- Eric
>
> "Thomas S. Dye" <tsd@tsdye.com> writes:
>
>> Hi Eric,
>>
>> Thanks for asking about the Library of Babel.  I'm still figuring out
>> the best way to use it and welcome your advice.
>>
>> Here is the approach I've drafted.  Do you think this is a reasonable
>> way to go?
>>
>>> The GANTT Emacs lisp code can either be placed in the buffer with  
>>> the
>>> GANTT chart table or it can be installed in the
>>> [[http://orgmode.org/manual/Library-of-Babel.html#Library-of-Babel
>>> ][Library of Babel]].
>>> Installing local code in the Library of Babel is best accomplished  
>>> by
>>> establishing one or more Org-mode files for this purpose and keeping
>>> them in a place that won't be overwritten when Org-mode is updated.
>>> For each of these local files, place a line like the following in
>>> =.emacs= to make the source code blocks accessible to the Library:
>>>
>>> #+source: load-local-lob
>>> #+begin_src emacs-lisp :exports code
>>>  (org-babel-lob-ingest "~/org/local-lob.org")
>>> #+end_src
>>
>> If this is off the mark, and the code should go in the main Library,
>> then I'd want to check with Eric F. first about the changes I made.
>>
>> All the best,
>> Tom
>>
>> On Oct 17, 2010, at 8:22 AM, Eric Schulte wrote:
>>
>>> BTW: Do you still intend to add the elispgantt code to the library  
>>> of
>>>    babel distributed with Org-mode?  If so I'm happy to handle the
>>>    commit if you send me the code or a patch.