From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Eric Schulte" <schulte.eric@gmail.com>
Subject: Re: Ignore some lines when using org-plot/gnuplot
Date: Sat, 14 Nov 2009 20:34:55 -0700
Message-ID: <m2tywwa2aa.fsf@gmail.com>
References: <4af25aef.8702be0a.6969.5c14@mx.google.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1N9Vta-0007Sg-BK
	for emacs-orgmode@gnu.org; Sat, 14 Nov 2009 22:35:22 -0500
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1N9VtV-0007S5-Q5
	for emacs-orgmode@gnu.org; Sat, 14 Nov 2009 22:35:21 -0500
Received: from [199.232.76.173] (port=52729 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1N9VtV-0007Rv-IE
	for emacs-orgmode@gnu.org; Sat, 14 Nov 2009 22:35:17 -0500
Received: from mail-yx0-f191.google.com ([209.85.210.191]:64271)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <schulte.eric@gmail.com>) id 1N9VtV-0005Vc-64
	for emacs-orgmode@gnu.org; Sat, 14 Nov 2009 22:35:17 -0500
Received: by yxe29 with SMTP id 29so5015166yxe.14
	for <emacs-orgmode@gnu.org>; Sat, 14 Nov 2009 19:35:15 -0800 (PST)
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/emacs-orgmode>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
To: Darlan Cavalcante Moreira <darcamo@gmail.com>
Cc: org-mode Mailinglist <emacs-orgmode@gnu.org>

Darlan Cavalcante Moreira <darcamo@gmail.com> writes:

> Hi everybody,
>
> Is there a way to ignore some lines when using org-plot/gnuplot to plot a table
> in Org? I have a table with some expenses, but the last two lines are the total
> calculated from the previous lines. I'd like to plot only the expenses and
> ignore the last two lines.
>
> In the docs there is the option "deps" to specify which columns should be
> plotted but I can't find an equivalent for lines (there is a line option but I
> understand that it is used to send some extra command to gnuplot).
>

Hi Darlan,

Sorry about the extremely delayed reply.  I don't believe that what
you've described is possible in the current implementation of org-plot.
It is possible however using org-babel which supports gnuplot.
Org-babel now allows indexing into the values of variable assignments.

So for example a simple gnuplot example could graph the contents of a
table by assigning that table to a variable

#+tblname: squares
| 1 |  1 |
| 2 |  4 |
| 3 |  9 |
| 4 | 16 |
| 5 | 25 |
| 6 | 36 |

#+begin_src gnuplot :var data=squares :results silent
  plot data using 1:2 with lines
#+end_src

with this new change it is possible to assign only part of the table to
a variable as you've described above.  For example

#+tblname: squares-with-sum
|  1 |  1 |
|  2 |  4 |
|  3 |  9 |
|  4 | 16 |
|  5 | 25 |
|  6 | 36 |
|----+----|
| 21 | 91 |

#+begin_src gnuplot :var data=squares-with-sum[0:-3] :results silent
  plot data using 1:2 with lines
#+end_src

For more information on indexing see the documentation of the
`org-babel-ref-index-list' function.

Thanks for motivating this new feature -- Eric

>
>
> - Darlan
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Remember: use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode