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From: Gunnar Wolf <gwolf@gwolf.org>
To: Nick Dokos <ndokos@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Tables for attendance lists - A problem understanding TBLFM?
Date: Tue, 9 Apr 2013 10:31:50 -0500	[thread overview]
Message-ID: <20130409153150.GE115357@gwolf.org> (raw)
In-Reply-To: <CANU-iVAkPXo1rcFYyCpDKsmmeHK3bo359FFJtPmBGdkq4ojN+Q@mail.gmail.com>

(Quoting in full to preserve mail readability without resorting to too
much context)

> > > #+CAPTION: Attendances for April
> > > |---------+-------------------+---+---+---+---+----+-------|
> > > | Account | Name              | 1 | 3 | 5 | 8 | 10 | Total |
> > > |---------+-------------------+---+---+---+---+----+-------|
> > > |    1234 | Cárdenas, Lázaro  | X |   | X | X |    |     3 |
> > > |    5678 | Madero, Francisco | X | X | X | X |    |     4 |
> > > |    1544 | Villa, Pancho     |   |   |   |   |    |     0 |
> > > |    0113 | Zapata, Emiliano  |   | X | X |   |    |     2 |
> > > |---------+-------------------+---+---+---+---+----+-------|
> > > #+tblfm: @II+1$>..@III-1$>='(length (delq "" '($<<<..$>>)))
> >
> > Interesting, my org-mode version behaves differently, and still gives
> > '1' for the empty row with your version:
> >
> > Substitution history of formula
> > (...)
> > @r$c-> '(length (delq "" '("0")))
> > $1->   '(length (delq "" '("0")))
> > Result: 1
> >
> Check the formula again: you seem to have captured the 0 from the last
> column, instead of stopping at the penultimate column. The range should
> be $3..$>> or $<<<..$>>  - also, you should have posted the whole
> substitution history so we could see the range, instead of me guessing. The
> motto should be "More information is better than less", but of course that
> should be tempered by common sense :-)

Trying with:

#+tblfm: @II+1$>..@III-1$>='(length(delq "" '($3..$>>)))

The full substitution history is:

Substitution history of formula
Orig:   '(length(delq "" '($3..$7)))
$xyz->  '(length(delq "" '($3..$7)))
@r$c->  '(length(delq "" '("0")))
$1->    '(length(delq "" '("0")))
Result: 1
Format: NONE
Final:  1

Changing the $3 for $<<< yields the exact same result. I cannot see
any "0" - As far as I can understand, the evaluation of an empty
vector for (length ...) gives this "0" ?

next prev parent reply	other threads:[~2013-04-09 15:33 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-08 23:57 Tables for attendance lists - A problem understanding TBLFM? Gunnar Wolf
2013-04-09  0:25 ` Suvayu Ali
2013-04-09  2:21   ` Gunnar Wolf
2013-04-09  3:31     ` Nick Dokos
2013-04-09  3:34       ` Nick Dokos
2013-04-09 12:40       ` Michael Brand
2013-04-09 14:57         ` Gunnar Wolf
2013-04-09 17:06         ` Bastien
2013-04-11 12:15           ` Michael Brand
2013-04-14  8:04           ` Michael Brand
2013-04-14 10:11             ` Bastien
2013-04-14 11:17               ` Michael Brand
2013-04-14 23:28                 ` Bastien
2013-04-09 14:55       ` Gunnar Wolf
2013-04-09 15:10         ` Nick Dokos
2013-04-09 15:31           ` Gunnar Wolf [this message]
2013-04-09 15:34           ` Michael Brand
2013-04-09 15:50             ` Michael Brand
2013-04-09 16:03               ` Nick Dokos
2013-04-09 16:13                 ` Gunnar Wolf
2013-04-09 12:41 ` Michael Brand

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