Re: org-babel and gnuplot

[John Hendy <jw.hendy@gmail.com>]

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Nick,

How about this?? Just fiddled around a little and wonder what you think.
There might be a better way, but essentially, I've done the following:

- Left y-axis = distance
- Right y-axis = time
- I couldn't get the xtic(1) option to work, so I replaced things with what
I've found to work x:y:xticlabels(col#)
- Beefed up the points to make them a little easier to see
- Used your data to "calibrate" your speed
--- The left y-axis is from 9-21min
--- The right y-axis is from 1.5min - 3.5min
--- This means the axes are 'calibrated' to 10mph

What does the "calibration" do? It means that at a quick glance you can see
your speed based on a target rate you set:
- if speed/distance are on top of each other, you're right at your target
- if speed (green) is higher than distance (red), you were faster than your
target
- if speed (green) is lower than distance (red), you were slower than your
target

Resetting your target is as easy as changing (in the code below):
- Time: yrange [y1:y2]
- Distance: y2range [y3:y4]

All you have to do is make sure that y3/y1 = y4/y2 = target speed

Also, remove the references to L/R and Red/Green if you'd like from the
labels. I just tried to make the labels as easy as possible to follow so
that no matter where you looked for a reference you would be forced to see
what color/axis matched what value.

I attached a sample graph. Sorry if I overstepped my bounds -- I realize
it's *your* workout tracker. Take what you like and ditch the rest. I wanted
to know how to do two different y axes anyway so it helped me learn. Code is
here:

------------------- gnuplot code -----------------------

#+tblname: sessions
| Date        | ID |  Time | Distance |
|-------------+----+-------+----------|
| 9/1/2010    |  1 | 14:00 |      2.4 |
| 9/2/2010    |  2 | 15:13 |      2.5 |
| 9/10/2010   |  3 | 13:45 |      2.3 |
| 9/11        |  4 | 12:20 |      2.0 |
| Spd > 10mph |  5 | 16:35 |      2.8 |
| Spd = 10mph |  6 |    10 |    1.666 |
| Spd < 10mph |  7 |    20 |      2.8 |

#+begin_src gnuplot :var data=sessions :file org-running.png :exports both
  reset
  set title "Running Stats"
  set size ratio square

  set xlabel "Date"
  set xtics nomirror rotate by -45

  set yrange [9:21]
  set ylabel "Time (min) -- Red"
  set ytics nomirror

  set y2range [1.5:3.5]
  set y2label "Distance (mi) -- Green"
  set y2tics 0,0.5,3.5

  set style data points
  plot data u 2:3:xticlabels(1) axis x1y1 lw 3 title 'Time (L axis)', \
       data u 2:4 axis x2y2 lw 3 title 'Distance (R axis)'
#+end_src

------------------- end gnuplot code ---------------------


Best regards,
John

On Wed, Sep 8, 2010 at 11:52 AM, Nick Parker <nickp@developernotes.com>wrote:

> John,
>
> I am reworking the gnuplot script, it is not done at this point, but this
> is what I currently have:
>
> #+begin_src gnuplot :var data=sessions :file org-running.png :exports both
>   set title "Running Stats"
>   set xtics nomirror rotate by -45
>   set key noenhanced
>   set style data linespoints
>   plot "$data" using 2:xtic(1) title columnheader(1), \
>   for [i=2:3] '' using i title columnheader(i)
> #+end_src
>
> Nick Parker
> www.developernotes.com
>
>
> On Wed, Sep 8, 2010 at 9:39 AM, John Hendy <jw.hendy@gmail.com> wrote:
>
>> Nick,
>>
>>
>> This got me curious to see the output. I tried to generate it on my
>> computer and get this in the *gnuplot* buffer after running the code:
>>
>> -----
>> gnuplot> plot data using 1:2:3 notitle
>>                                ^
>>          warning: Skipping data file with no valid points
>>                                       ^
>>          x range is invalid
>> -----
>>
>> This is working for you, though?
>>
>> #+tblname: sessions
>> | Date       |  Time | Distance |
>> |------------+-------+----------|
>> | 09/02/2010 | 15:13 |      2.5 |
>> | 09/01/2010 | 14:00 |      2.4 |
>>
>> #+begin_src gnuplot :var data=sessions :file org-running.png :exports both
>>   set title "Running Stats"
>>   set auto x
>>   set style data histogram
>>   set style fill solid border -1
>>   set boxwidth .9
>>   set xlabel "Date"
>>   set ylabel "Time"
>>   plot data using 1:2:3 notitle
>> #+end_src
>>
>>
>> John
>>
>> On Wed, Sep 8, 2010 at 8:10 AM, Nick Parker <nickp@developernotes.com>wrote:
>>
>>> Erik,
>>>
>>> That was the issue, the :file reference needed to be on the line above.
>>>  Thanks.
>>>
>>>
>>> Nick Parker
>>> www.developernotes.com
>>>
>>>
>>> On Tue, Sep 7, 2010 at 10:27 PM, Erik Iverson <eriki@ccbr.umn.edu>wrote:
>>>
>>>> On 09/07/2010 10:12 PM, Nick Parker wrote:
>>>>
>>>>> Hi John,
>>>>>
>>>>> I would actually like to plot different lines per distance, each
>>>>> that correlate to a date and elapsed-time (x and y axis respectively).
>>>>>  I get an error with the :file notation, though I read that in a sample
>>>>> babel gnuplot example for generating graphs of commit history on the
>>>>> org-mode git repository.  I tried to reference the variable data
>>>>> without
>>>>> the quotes and $ sign without any success.  I will continue to fiddle
>>>>> with it, I am new to gnuplot.
>>>>>
>>>>
>>>> AFAIK, you can't break source code header argument lines across
>>>> multiple lines.  Is that how you actually have it in your
>>>> org file?
>>>>
>>>>
>>>>         #+begin_src gnuplot :var data=sessions
>>>>>           :file org-running.png :exports both
>>>>>           set title "Running Stats"
>>>>>           set auto x
>>>>>           set style data histogram
>>>>>           set style fill solid border -1
>>>>>           set boxwidth .9
>>>>>           set xlabel "Date"
>>>>>           set ylabel "Time"
>>>>>           plot "$data" using 1:2:3 notitle
>>>>>        #+end_src
>>>>>
>>>>>        Nick Parker
>>>>>        www.developernotes.com <http://www.developernotes.com>
>>>>>
>>>>>
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>>
>

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