I've been trying to make a table with the following structure: column 1
contains either a date or is empty; column 2 contains a date that's
calculated from the corresponding date in column 1 (if column 1 contains
a date) or is empty (if column 1 is empty). In the example below, column
2 is supposed to be the date 12 hours or 0.5 days after the date in
column 1 (assuming that it is non-empty).
I have tried various formulas as shown in the tables below where row 1
contains a date in column 1 and row 2 is supposed to be empty:
| start | ETA (start + 12 hrs) |
|------------------------+----------------------------|
| <2008-08-14 Thu 18:15> | <2008-08-15 Fri 06:15> |
| | <+1-01-01 Sat> ? 0 + 0.5 : |
#+TBLFM: $2=(date($1)?$1+0.5:string(""))
| start | ETA (start + 12 hrs)
|
|------------------------+---------------------------------------------------------|
| <2008-08-14 Thu 18:15> | <2008-08-14 Thu 06:15> ? <2008-08-14 Thu 06:15> +
0.5 : |
| |
|
#+TBLFM: $2=($1?$1+0.5:string(""))
| start | ETA (start + 12 hrs)
|
|------------------------+--------------------------------------------------------------|
| <2008-08-14 Thu 18:15> | 733269.76 != <+1-01-01 Sat> ? <2008-08-14 Thu 06:15>
+ 0.5 : |
| |
|
#+TBLFM: $2=(date($1)!=date(0)?$1+0.5:string(""))
| start | ETA (start + 12 hrs) |
|------------------------+---------------------------------|
| <2008-08-14 Thu 18:15> | <2008-08-15 Fri 06:15> |
| | <+1-01-01 Sat> != 0 ? 0 + 0.5 : |
#+TBLFM: $2=(date($1)!=date(<+1-01-01 Sat>)?$1+0.5:string(""))
but as you can see, there is no formula that gets both rows right. This
is a subset of all the trials that I have done: none seems to work. I'm
almost certain that the error (if it is indeed an error and not my own
stupidity) lies with calc-eval, not with org-table, but I am just not
ready to wade into those waters yet.
If somebody has a different formula, a work-around for any of the above
or some related formula, or can give me the proper head-whack to point
me in the right direction, I'd appreciate it very much.
BTW, I tried the if(a,b,c) form of the conditional as well, but it does
not make any difference afaict: they seem to be entirely
equivalent. That's what I would have expected, but desperate situations
call for desperate measures!-)
Thanks,
Nick
Version info:
Linux 2.6.24-19-generic #1 SMP Fri Jul 11 23:41:49 UTC 2008 i686 GNU/Linux
GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.12.9) of 2008-07-01
Org-mode version 6.06b
_______________________________________________
Emacs-orgmode mailing list
Remember: use `Reply All' to send replies to the list.
Emacs-orgmode@gnu.org
http://lists.gnu.org/mailman/listinfo/emacs-orgmode
