Re: [O] Conditional in table formula with times

[Sebastien Vauban]

"Loris Bennett" wrote:
> I'm trying to keep track of total time spend at work, but I am having
> trouble with a conditional in table formula:
>
> | *Day*            | *Came* | *Went* | *Worked* | *Required* |   *Diff* |
> |------------------+--------+--------+----------+------------+----------|
> | [2014-01-06 Mon] |   8:00 |  17:00 | 09:00:00 |   00:00:00 | 09:00:00 |
> | [2014-01-07 Tue] |        |        | 00:00:00 |   00:00:00 | 00:00:00 |
> | [2014-01-08 Wed] |   8:10 |  16:30 | 08:20:00 |   00:00:00 | 08:20:00 |
> | [2014-01-09 Thu] |   7:55 |  17:05 | 09:10:00 |   00:00:00 | 09:10:00 |
> | [2014-01-10 Fri] |   8:00 |  17:05 | 09:05:00 |   00:00:00 | 09:05:00 |
> #+TBLFM: $4=$3-$2;T::$5=if($4 > 0,"8:18:00","00:00:00");T::$6=$4-$5;T
>
> Can anyone enlighten me as to why I get "00:00:00" in the first case?

Not answering your question...

Just wanted to mention that, for this type of task, you probably should
have a look at the "clocking" mechanisms (C-c C-x C-i and the like), and
use them to generate tables like the above, or bills for clients, etc.

Using proper clocking brings you many advantages, whose main (IMO) is
the "clock check" feature, where you can check that you don't have
unintended clocking gaps during the day, nor clocking overlap...

Best regards,
  Seb

-- 
Sebastien Vauban