On Mon, Feb 1, 2010 at 2:56 PM, Eric Schulte <schulte.eric@gmail.com> wr= ote:

Hey Chao,

Chao Lu <chaol@princeton.edu&= gt; writes:

> Hey Eric,
>

> Now it works! Thank you soooo much. I'll r= ead through the reference, sorry to bother you
> so much, a little busy on research.
>

I'm happy to help.

>
> And, Could I ask for more... Say, are you using Org to generate LaTeX = or beamer, by any
> chance? If so, I'm trying to configure the LaTeX part, my Org has = been able to find the
> dvipng and latex bins, for it recognized the LaTeX blocks, and produce= d the images in
> the ltxpng dir. But problems the images it generated is just black, wi= th nothing... Do
> you have any idea?
>

Hmm, I do use org for both latex and Beamer presentations, it sounds<= br> like what you're describing is an issue during the preview of latex
fragments from within org-mode files?

I've had problems with that in the past, but they've mainly ended u= p
being issue with org finding and using my dvipng command. =A0I'd take a=
look at your messages buffer, and if you continue to have problems you
can submit a bug report to the org-mode mailing list.

Good Luck -- Eric

>
> Best,
>
> Chao
>
> On Mon, Feb 1, 2010 at 2:00 PM, Eric Schulte <schulte.eric@gmail.com> wrote:
>
> =A0 =A0 Hi Chao,
>
> =A0 =A0 Try the following alternative to your statement
>
> =A0 =A0 ----------
> =A0 =A0 #+begin_src emacs-lisp :exports results
> =A0 =A0 =A0(defun fibonacci (n)
> =A0 =A0 =A0 =A0(if (or (=3D n 0) (=3D n 1))
> =A0 =A0 =A0 =A0 =A0 =A0n
> =A0 =A0 =A0 =A0 =A0(+ (fibonacci (- n 1)) (fibonacci (- n 2)))))
>
> =A0 =A0 =A0(mapcar (lambda (row)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(mapcar #'fibonacci row)) fib-input= s)
> =A0 =A0 #+end_src
> =A0 =A0 ----------
>
> =A0 =A0 for more information on Org-babel see [1], and specifically fo= r more
> =A0 =A0 information on the use of header arguments like :exports see [= 2].
>
> =A0 =A0 Best -- Eric
>
> =A0 =A0 Chao Lu <chaol@princ= eton.edu> writes:
>
> =A0 =A0 > Hey Eric,
> =A0 =A0 >
> =A0 =A0 > Thanks again for your instruction, now it works well. But= could I ask more about
> =A0 =A0 > org-babel?
> =A0 =A0 >
> =A0 =A0 > Actually I tried to enabled it by:
> =A0 =A0 > -----------
> =A0 =A0 > (require 'org-babel-init)
> =A0 =A0 > (require 'org-babel-ditaa)
> =A0 =A0 > (org-babel-load-library-of-babel)
> =A0 =A0 > -----------
> =A0 =A0 >
> =A0 =A0 > Then tried to evaluate it by
> =A0 =A0 > ----------
> =A0 =A0 > #+begin_src emacs-lisp
> =A0 =A0 > =A0 (defun fibonacci (n)
> =A0 =A0 > =A0=A0=A0 (if (or (=3D n 0) (=3D n 1))
> =A0 =A0 > =A0=A0=A0=A0=A0=A0=A0 n
> =A0 =A0 > =A0=A0=A0=A0=A0 (+ (fibonacci (- n 1)) (fibonacci (- n 2)= ))))
> =A0 =A0 > =A0
> =A0 =A0 > =A0 (mapcar (lambda (row)
> =A0 =A0 > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 (mapcar #'fibonacci= row)) fib-inputs)
> =A0 =A0 > #+end_src
> =A0 =A0 > ----------
> =A0 =A0 >
> =A0 =A0 > But seems did not get what I want, which should be a seri= es of numbers, what I got
> =A0 =A0 from
> =A0 =A0 > is just a colored output when I export this file to html.=
> =A0 =A0 >
> =A0 =A0 > Would you mind explain a little bit?
> =A0 =A0 >
> =A0 =A0 > Many thanks,
> =A0 =A0 >
> =A0 =A0 > Chao
> =A0 =A0 >
> =A0 =A0 > On Mon, Feb 1, 2010 at 10:40 AM, Eric Schulte <schulte.eric@gmail.com> wrote: > =A0 =A0 >
> =A0 =A0 > =A0 =A0 Chao Lu <= loochao@gmail.com> writes:
> =A0 =A0 >
> =A0 =A0 > =A0 =A0 > Hey Eric,
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > Thanks for the tip, it works well here!
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > Yet another further question, is it possible= to assign the directory where
> =A0 =A0 the
> =A0 =A0 > =A0 =A0 picture
> =A0 =A0 > =A0 =A0 > should be exported to? For it is kind of mes= sy if all the figures goes to
> =A0 =A0 the root
> =A0 =A0 > =A0 =A0 > directory.
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 >
> =A0 =A0 > =A0 =A0 Yes, just add it to the :file name, i.e.
> =A0 =A0 >
> =A0 =A0 > =A0 =A0 #+begin_src ditaa :file data/communication.png :e= xports results
> =A0 =A0 >
> =A0 =A0 > =A0 =A0 Best -- Eric
> =A0 =A0 >
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > Thanks a lot for your help,
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > Chao
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > On Sat, Jan 30, 2010 at 7:46 PM, Eric Schult= e <schulte.eric@gmail.com&= gt;
> =A0 =A0 wrote:
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 Hi Chao,
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 I don't believe that it is curre= ntly possible to customize the file
> =A0 =A0 > =A0 =A0 > =A0 =A0 names in the ways you have described= using the standard begin_ditaa
> =A0 =A0 > =A0 =A0 > =A0 =A0 blocks. =A0It is possible to have co= mplete control over the file names
> =A0 =A0 > =A0 =A0 > =A0 =A0 using org-babel, in which case the c= orresponding block would look like
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 --------
> =A0 =A0 > =A0 =A0 > =A0 =A0 #+begin_src ditaa :file communicatio= n.png :exports results
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 =A0blabla
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 #+end_src
> =A0 =A0 > =A0 =A0 > =A0 =A0 --------
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 then the image will be created on ex= port, and you can also preview the
> =A0 =A0 > =A0 =A0 > =A0 =A0 image by pressing C-c C-o on the blo= ck.
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 To activate org-babel add the follow= ing to your Emacs configuration
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 (require 'org-babel-init)
> =A0 =A0 > =A0 =A0 > =A0 =A0 (require 'org-babel-ditaa)
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 Best -- Eric
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 Chao Lu <loochao@gmail.com> writes:
> =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Dear all,
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > When I'm using the ditaa in= a org file called pearl.org= , by
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > --------
> =A0 =A0 > =A0 =A0 > =A0 =A0 > #+begin_ditaa communication.png=
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > blabla
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > #+end_ditaa
> =A0 =A0 > =A0 =A0 > =A0 =A0 > --------
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > It generates a file called
> =A0 =A0 > =A0 =A0 > =A0 =A0 communication_5e2f49c31c46339e8e3af9= ef8a2fd2dfa3d1fe74.png,
> =A0 =A0 > =A0 =A0 > =A0 =A0 > but this picture is right locat= ed at the same file as the org file(
> =A0 =A0 pearl.org > =A0 =A0 > =A0 =A0 ). Is
> =A0 =A0 > =A0 =A0 > =A0 =A0 it
> =A0 =A0 > =A0 =A0 > =A0 =A0 > possible to let it go to certai= n dir like the latex pictures do? And
> =A0 =A0 is it
> =A0 =A0 > =A0 =A0 > =A0 =A0 possible to
> =A0 =A0 > =A0 =A0 > =A0 =A0 > let the generated picture has t= he prefix of the org file name
> =A0 =A0 automatically,
> =A0 =A0 > =A0 =A0 like
> =A0 =A0 > =A0 =A0 > =A0 =A0 > org_communication_5e2f49c31c463= 39e8e3af9ef8a2fd2dfa3d1fe74.png?
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Thanks,
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Chao
> =A0 =A0 > =A0 =A0 > =A0 =A0 >
> =A0 =A0 > =A0 =A0 > =A0 =A0 > _______________________________= ________________
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Emacs-orgmode mailing list
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Please use `Reply All' to s= end replies to the list.
> =A0 =A0 > =A0 =A0 > =A0 =A0 > Emacs-orgmode@gnu.org
> =A0 =A0 > =A0 =A0 > =A0 =A0 > http://lists.gnu.org/mai= lman/listinfo/emacs-orgmode
>
> =A0 =A0 Footnotes:
> =A0 =A0 [1] =A0http://orgmode.org/worg/org-contrib/babel/
>
> =A0 =A0 [2] =A0http://orgmode.org/worg/org-contrib/babel/re= ference.php