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From: "Eric Schulte" <schulte.eric@gmail.com>
To: Eric S Fraga <e.fraga@ucl.ac.uk>
Cc: emacs-orgmode@gnu.org
Subject: Re: Plotting date on xaxis
Date: Tue, 23 Feb 2010 17:05:45 -0700	[thread overview]
Message-ID: <87ljejsdk6.fsf@gmail.com> (raw)
In-Reply-To: <87vddntvig.wl%ucecesf@ucl.ac.uk> (Eric S. Fraga's message of "Tue, 23 Feb 2010 22:52:39 +0000")

Eric S Fraga <ucecesf@ucl.ac.uk> writes:

[...]
>
> I have narrowed down what causes the problem although I don't
> understand why (I haven't had any time to look at the elisp code).
> Basically, the problem with Johan's initial table was the extra empty
> row at the end:
>

Ah,

Thanks for isolating the issue.

It looks like the empty last row is tricking org-plot.el into thinking
that the entire Date column contains text labels, so it tries to use the
values of that column to label the data with xticlabels [1].  This is
useful for histograms such as the "Citas" graph in [2].

So all in all I'd say this is fine behavior for something like org-plot
which tries to guess the user's intentions.

Best -- Eric

>
> #+PLOT: title:"Weight" ind:1 deps:(2) type:2d with:linespoints set:"xdata time" set:"timefmt '%Y-%m-%d'" set:"yrange [90:]"
> |       Date |   Kg |
> |------------+------|
> | 2010-02-21 | 95.0 |
> | 2010-02-22 | 93.0 |
> | 2010-02-23 | 92.0 |
> | 2010-02-24 | 91.5 |
> | 2010-02-25 | 91.0 |
> | 2010-02-28 | 92.0 |
> |            |      |
>
> With the empty row there, the "using 1:2" option to the gnuplot plot
> command is not generated correctly, instead generating "using
> 1:xticlable(1)" which gnuplot doesn't like!  If the last row is
> deleted, everything works just fine (even if February doesn't have 29
> days in 2010 ;-).
>
> HTH,
> eric

Footnotes: 
[1]  http://www.gnuplot.info/docs/node135.html

[2]  http://orgmode.org/worg/org-tutorials/org-plot.php

next prev parent reply	other threads:[~2010-02-24  0:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-22 18:31 Plotting date on xaxis Johan Ekh
2010-02-23  9:52 ` Eric S Fraga
2010-02-23 14:47 ` Eric Schulte
2010-02-23 16:27   ` Johan Ekh
2010-02-23 17:15     ` Dan Davison
2010-02-23 17:33       ` Eric Schulte
2010-02-23 22:52   ` Eric S Fraga
2010-02-24  0:05     ` Eric Schulte [this message]
2010-02-24  8:07       ` Eric S Fraga
2010-02-25 17:44         ` Eric Schulte
2010-02-25 20:11           ` Eric S Fraga
2010-02-26 15:09             ` Johan Ekh
2010-05-15 13:47 ` Ivan Vilata i Balaguer

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