[Jprogramming] Plotting date labels

[Björn Helgason]

   lab
+----+----+----+----+----+----+----+----+----+----+----+----+-----+
|2Jan|2Feb|1Mar|1Apr|4May|1Jun|1Jul|2Aug|1Sep|1Oct|1Nov|1Dec|31Dec|
+----+----+----+----+----+----+----+----+----+----+----+----+-----+


2010/11/27 PackRat <packrat at anet.com>

> I'm stumped again!  Except for the j,m,d data values below, this date
> label code comes from some other J source code (the "2004 London Gold
> Fix USD" plot demo), and so, theoretically, it ought to work correctly,
> but the case below does not:
>
> -------------------------------------------------------------
> MTH3=. _3[\'JanFebMarAprMayJunJulAugSepOctNovDec'
> j=. 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008
> m=. 1 1 1 2 2 2 3 3 3 4 4
> d=. 1 2 3 1 2 3 1 2 3 1 2
> lab=. (":each d) ,each (m-1) { MTH3
> ...
> pd 'xlabel ',; ' ',each lab
> -------------------------------------------------------------
>
> I think  lab  is supposed to look like this:
>
> 1Jan
> 2Jan
> 3Jan
> 1Feb
> 2Feb
> ...
>
> Unfortunately, it looks like this:
>
> +--+--+--+
> |1J|1a|1n|
> +--+--+--+
> |2J|2a|2n|
> +--+--+--+
> |3J|3a|3n|
> +--+--+--+
> |1F|1e|1b|
> +--+--+--+
> |2F|2e|2b|
> +--+--+--+
> ...
>
> As I said, I got the critical code from an existing J source, and I
> can't quite figure out exactly what it's supposed to be doing or why
> it's doing what it's doing.  I'm trying to get my whole (short) project
> going so that I can create charts of my blood glucose data for my
> doctor's appointment on Tuesday.  (I've prepared charts previously, but
> not with date info along the bottom.)  Any help would be appreciated!
> Thanks in advance!
>
> Harvey
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>



-- 
Björn Helgason, Verkfræðingur
Fornustekkum II
781 Hornafirði,
t-póst: gosinn at gmail.com
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sími: +3544781286
http://groups.google.com/group/J-Programming


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          /|_      .-----------------------------------.
         ,'  .\  /  | Með léttri lund verður        |
     ,--'    _,'   | Dagurinn í dag                     |
    /       /       | Enn betri en gærdagurinn  |
   (   -.  |        `-----------------------------------'
   |     ) |         (\_ _/)
  (`-.  '--.)       (='.'=)   ♖♘♗♕♔♙
   `. )----'        (")_(") ☃☠