Re: Re: From state table to state diagram

From: Rainer M Krug <r.m.krug@gmail.com>
To: emacs-orgmode@gnu.org
Subject: Re: Re: From state table to state diagram
Date: Sat, 25 Sep 2010 09:40:47 +0200	[thread overview]
Message-ID: <AANLkTimO9ONx5Z=uMuT8ek+Q0OHfZB_NgfmVEBjcHTJw@mail.gmail.com> (raw)
In-Reply-To: <i7fq5l$p6k$1@dough.gmane.org>

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Hi

I really like the idea of this conversion from a State Transition Table to a
State Transition Diagram as it is much easier to make a table then a graph.
Unfortunately I don't know enough of python to help here.
Could you please publish your solution here (and on worg) as it would be a
very useful addition to org.

Cheers,

Rainer

On Thu, Sep 23, 2010 at 5:02 PM, Gary <emacs-orgmode@garydjones.name> wrote:

> Sorry, I've been rather lax on this :( I got dragged onto other stuff,
> went on training courses, and all sorts of other things.
>
> Eric Schulte wrote:
> > Babel does support generating diagrams with graphviz via "dot" code
> > blocks.  Babel is also capable of converting Org-mode tables to list
> > objects in a number of languages, so I'd recommend writing a table->dot
> > script in your favorite language, and then using babel to handle the
> > coordination and Org-mode integration.
>
> That's all very easy for you to say :))
>
> > I'm happy to help in this regard, the first step would be something like
> > the following example which assumes python is your preferred scripting
> > language (as you can see I have no idea what your state table may look
> > like)...
>
> Well, wikipedia suggests the following[1] (and goes into further detail
> as well[2])
>    | Current State -> | State | State | State |
>    | Input   v        |   A   |   B   |   C   |
>    |------------------+-------+-------+-------|
>    | x                |   B   | ...   | ...   |
>    | y                | ...   |   C   | ...   |
> which basically says that when the machine is in State A and receives
> 'x' then it transitions to State B, and when it receives a 'y' in State
> B it transitions to State C.
>
> > #+results: state-table
> > | 1 | 2 |
> > | 3 | 4 |
> >
> > #+source: table-to-dot
> > #+begin_src python :var table=state-table
> >   python code here
>
> Okay. What should this python code here do? :) I know, it converts a
> table to dot-script, but are there any examples I could look at which
> take a table as input and output something (anything), just so I can see
> how the python code should expect its input?
>
> > #+end_src
> >
> > #+begin_src dot :var text=table-to-dot(table=state-table)
> >   graph{
> >     $text
> >   }
> > #+end_src
> >
> > Once this is working I think it could make a great addition to the
> > library of babel [1] (a collection of generally useful code blocks).
>
> Sure :)
>
> [1]
> http://en.wikipedia.org/wiki/Finite-state_machine#Concepts_and_vocabulary
> [2] http://en.wikipedia.org/wiki/State_transition_table
>
>
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Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys. (Germany)

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