Re: [O] Table formula changes are not always necessary when moving rows

[Carsten Dominik]

On 28.2.2011, at 12:43, Tom wrote:

> I have a table in which I sum the values of all rows in the last
> row: vsum(@address@hidden). The problem is when move a row with M-up
> before the first row (e.g. I press M-up on the second row) then
> org modifies this formula to vsum(@address@hidden).
> 
> This is not always the expected behavior, because in this case I
> just want to move the data in the rows, but still want to sum the
> values of all the rows from the first to the last. A similar case
> is when I want to insert a row before the first row of such a
> table. In that case too the formulas should be left alone,
> because I still want to sum all the rows, including the newly
> inserted first row.
> 
> In such cases when the formula is modified Org should either
> print warning to the echo area, so the user notices when the
> formulas are changing because of the move, or it should ask the
> user what to do ("do you want to modify the formulas?").

Aside to Bastien's help for this issue, a variable that will
prompt you before the formulas are rewritten, consider this:
Most of the time is should be possible to rewrite the formula
in a stable way.  You did not show your example, but from the
formula I would assume that you start the table immediately
with data, without a header line org a horizontal separator line.
If you did, you could do vsum(@I..II) and have a formula that is
stable against row switches.

Hope this helps.

- Carsten