Re: org-exp-block patch and Graphviz Demo

From: "Eric Schulte" <schulte.eric@gmail.com>
To: emacs-orgmode@gnu.org
Subject: Re: org-exp-block patch and Graphviz Demo
Date: Wed, 10 Jun 2009 09:06:09 -0700	[thread overview]
Message-ID: <m2zlcg6pla.fsf@gmail.com> (raw)
In-Reply-To: <20090610152940.GA11193@thinkpad.adamsinfoserv.com> (Russell Adams's message of "Wed, 10 Jun 2009 10:29:40 -0500")

Russell Adams <RLAdams@AdamsInfoServ.Com> writes:

>> Since you would rather go to EPS as an intermediary step, then I would
>> recommend defining a new block type which can handle this two-stage
>> process.  There are instructions in org-exp-blocks.el, and I would
>> recommend using `org-export-blocks-format-dot' in
>> contrib/lisp/org-exp-blocks.el as your starting point.  It should be
>> possible to achieve the result your want with only one or two lines of
>> new elisp probably inserted right after the following line
>> 
>>   (shell-command (concat "dot " data-file " " args " -o " out-file))
>> 
>> Cheers -- Eric
>
> I'm still just teething in lisp, but I'll give it a peek.
>

This *should* be a good gentle introduction to lisp programming, and
probably shouldn't include much more than the introduction of another
call to `shell-command' which calls eps on the out-file.

If you run into problems feel free to email me off list, and I'd be
happy to try to share pointers.

>
> Have you compared the output between dot going straight to pdf, vs dot
> to eps to pdf?
>
> Attached are a pair of pdf's for comparison. The default font in eps
> is better, and the line style is blunted and looks better vs the
> arrows showing up going through the nodes.

I see what you mean, subtle but definitely looks nicer through EPS.

> 
> Perhaps I can control these in the dot file, I'll look into it.
>

Really it would probably be much easier to do this with a new block
type... what do the commands look like when you do this by hand?

Cheers -- Eric

>
> Thanks.
>
>
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