From: "Eric Schulte" <schulte.eric@gmail.com>
To: Darlan Cavalcante Moreira <darcamo@gmail.com>
Cc: org-mode Mailinglist <emacs-orgmode@gnu.org>
Subject: Re: Ignore some lines when using org-plot/gnuplot
Date: Sat, 14 Nov 2009 20:34:55 -0700 [thread overview]
Message-ID: <m2tywwa2aa.fsf@gmail.com> (raw)
In-Reply-To: 4af25aef.8702be0a.6969.5c14@mx.google.com
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
>
>
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next prev parent reply other threads:[~2009-11-15 3:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-05 4:56 Ignore some lines when using org-plot/gnuplot Darlan Cavalcante Moreira
2009-11-15 3:34 ` Eric Schulte [this message]
2009-11-16 1:54 ` Darlan Cavalcante Moreira
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