From: Paul Stansell <paulstansell@gmail.com>
To: emacs-orgmode@gnu.org
Subject: using gnuplot's "splot" and "every" commands on org-mode table data
Date: Wed, 1 May 2013 15:39:56 +0100 [thread overview]
Message-ID: <CAMJKaZyDhvLkOEe7bLxtbTy3om4V2dWeJVoGkYZX-R_aKFnG9w@mail.gmail.com> (raw)
Hello everyone,
I'd be grateful if someone would offer me advice on using gnuplot's
"splot" and "every" commands when plotting data from a table within
org-mode.
As far as I can tell, these gnuplot commands do not work properly
because org-mode exports empty fields in tables as "" and gnuplot's
"every" and splot commands expect the data file to be formatted as a
datablock with blank lines marking the boundaries between datablocks.
(For the definition of a datablock, type "help glossary" at the
gnuplot prompt.)
I'm using org-mode version 8.0.2 and emacs version 24.2.1 on a
Fedora-18 system
To illustrate my point, consider a blocked datafile called "block.dat"
containing the following:
1 1 2
1 2 5
1 3 10
2 1 5
2 2 8
2 3 13
3 1 10
3 2 13
3 3 18
For this file the gnuplot command
#+begin_src gnuplot :var d="block.dat" :results silent
plot "$d" u 2:3 ev :::0::0, "" u 2:3 ev :::1::1, "" u 2:3 ev :::2::2
#+end_src
shows three separate lines of different colours as gnuplot
recognises the datafile as blocked data.
Also, the following command produces a surface plot
#+begin_src gnuplot :var d="block.dat" :results silent
splot "$d" u 1:2:3
#+end_src
However, if I put the same data in the table below
#+tblname: data
| 1 | 1 | 2 |
| 1 | 2 | 5 |
| 1 | 3 | 10 |
| | | |
| 2 | 1 | 5 |
| 2 | 2 | 8 |
| 2 | 3 | 13 |
| | | |
| 3 | 1 | 10 |
| 3 | 2 | 13 |
| 3 | 3 | 18 |
and use the following plot command
#+begin_src gnuplot :var d=data :results silent
plot "$d" u 2:3 ev :::0::0, "" u 2:3 ev :::1::1, "" u 2:3 ev :::2::2
#+end_src
the result is a plot of a single line of the same colour as gnuplot
joins all of the points in the data file. This seems to be because
org-mode exports the table as
"x" "y" "z"
1 1 2
1 2 5
1 3 10
"" "" ""
2 1 5
2 2 8
2 3 13
"" "" ""
3 1 10
3 2 13
3 3 18
and gnuplot does not recognise this as a blocked data file because it
contains no blank lines.
The same problem occurs for
#+begin_src gnuplot :var d=data :results silent
splot "$d" u 1:2:3
#+end_src
which does not produce a gridded surface plot.
Thanks for your help,
Paul
next reply other threads:[~2013-05-01 14:40 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-01 14:39 Paul Stansell [this message]
2013-05-03 16:09 ` using gnuplot's "splot" and "every" commands on org-mode table data Eric Schulte
2013-05-06 18:57 ` Achim Gratz
2013-05-09 12:54 ` Eric S Fraga
2013-05-09 20:23 ` Achim Gratz
2013-05-09 20:42 ` Eric S Fraga
2013-05-11 10:39 ` Achim Gratz
2013-05-11 12:20 ` Rick Frankel
2013-05-21 12:36 ` Eric S Fraga
2013-05-07 17:14 ` Paul Stansell
2013-05-07 18:25 ` Eric Schulte
2013-05-07 18:39 ` Paul Stansell
2013-05-08 12:46 ` Eric Schulte
2013-05-08 15:48 ` Paul Stansell
2013-05-13 21:43 ` Eric Schulte
2013-05-17 15:00 ` Eric Schulte
2013-05-17 20:18 ` Paul Stansell
2013-05-17 20:39 ` Eric Schulte
2013-05-17 21:33 ` Paul Stansell
2013-08-30 17:16 ` Paul Stansell
2013-08-30 19:13 ` Achim Gratz
2013-05-07 18:19 ` Paul Stansell
2013-05-08 12:41 ` Eric Schulte
2013-05-08 16:00 ` Paul Stansell
2013-05-12 18:55 ` Achim Gratz
2013-05-13 21:38 ` Eric Schulte
2013-05-14 7:06 ` Achim Gratz
2014-03-25 18:42 ` Achim Gratz
2013-05-11 10:51 ` Achim Gratz
2013-09-23 14:54 ` Paul Stansell
2013-09-23 23:32 ` Eric Schulte
2013-09-24 12:05 ` Paul Stansell
2013-09-25 18:21 ` Eric Schulte
2013-09-25 20:01 ` Paul Stansell
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