From: Eric Schulte <eric.schulte@gmx.com>
To: news1142@Karl-Voit.at
Cc: emacs-orgmode@gnu.org
Subject: Re: Generating boxplot (candlestick) diagrams (babel or org-plot)
Date: Sun, 08 Jan 2012 09:38:01 -0700 [thread overview]
Message-ID: <87k452176e.fsf@gmx.com> (raw)
In-Reply-To: <2012-01-08T16-41-37@devnull.Karl-Voit.at> (Karl Voit's message of "Sun, 8 Jan 2012 16:44:59 +0100")
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Karl Voit <devnull@Karl-Voit.at> writes:
> Hi!
>
> I'm new to babel/gnuplot/org-plot and want to generate classic
> Boxplot[1] diagrams.
>
> My tests failed so far:
>
> #+TBLNAME: mydata
> #+PLOT: title:"Boxplots of mydata" with:candlesticks
> | A | B |
> |---+---|
> | 5 | 5 |
> | 5 | 6 |
> | 4 | 5 |
> | 5 | 6 |
> | 2 | 4 |
> | 2 | 5 |
>
> ... with «org-plot/gnuplot» results in:
> #+begin_verse
> gnuplot-mode 0.6.0 (gnuplot 4.4) -- report bugs with "C-c C-u"
> Starting gnuplot plotting program...Done
>
> #+end_verse
>
> ... with nothing else.
>
>
> #+begin_src gnuplot :var data=mydata :file output.png
> set title "Plot Test"
>
> plot data using 1:2 with candlestick
> #+end_src
>
> ... results in empty output.png file.
>
In more complex examples like these I would recommend using a gnuplot
code block rather than using Org-plot. Gnuplot has an extremely
comprehensive built in help system, typing "help boxplot" at the gnuplot
REPL returns the following.
,----
| gnuplot> help boxplot
| Boxplots are a common way to represent a statistical distribution of values.
| Quartile boundaries are determined such that 1/4 of the points have a value
| equal or less than the first quartile boundary, 1/2 of the points have a value
| equal or less than the second quartile (median) value, etc. A box is drawn
| around the region between the first and third quartiles, with a horizontal line
| at the median value. Whiskers extend from the box to user-specified limits.
| Points that lie outside these limits are drawn individually.
|
| Examples
|
| # Place a boxplot at x coordinate 1.0 representing the y values in column 5
| plot 'data' using (1.0):5
|
| ...
`----
Also see the help for "candlestick". Using this information the
attached Org-mode file generates a candlestick plot using a Gnuplot code
block.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: candlestick.org --]
[-- Type: text/x-org, Size: 642 bytes --]
#+Title: Box-Plots with Gnuplot
#+Options: ^:nil
#+name: sample
| x | box_min | whisker_min | whisker_high | box_high |
|---+---------+-------------+--------------+----------|
| 1 | 2 | 0 | 6 | 4 |
| 2 | 3 | 1 | 7 | 5 |
| 3 | 4 | 2 | 8 | 6 |
| 4 | 5 | 3 | 9 | 7 |
| 5 | 6 | 4 | 10 | 8 |
| 6 | 7 | 5 | 11 | 9 |
#+begin_src gnuplot :var data=sample :results silent
set xrange [0:7]
plot data using 1:2:3:4:5 with candlesticks
#+end_src
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Best,
>
>
> What is the problem here? At least the second method should end up
> in an error message or a file with content I guess.
>
> 1. http://en.wikipedia.org/wiki/Boxplot
--
Eric Schulte
http://cs.unm.edu/~eschulte/
next prev parent reply other threads:[~2012-01-08 16:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-08 15:44 Generating boxplot (candlestick) diagrams (babel or org-plot) Karl Voit
2012-01-08 16:38 ` Eric Schulte [this message]
2012-01-08 17:30 ` Karl Voit
2012-01-08 18:05 ` Eric Schulte
2012-01-09 16:46 ` Karl Voit
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