how to get back automatically continue a formula

[nhvideoguy]

At some revision of Excel and continuing into 2007 which is what I'm using now, I was happily surprised when Excel 'noticed' (for example) that in column C I was always doing a sum of columns A and B and the next time I entered data into columns A and B it automatically summed them in column C.

Or at least I think that happened Does this sound like anything Excel can do? If so, how do I turn it on again for certain columns?

I do know if I had continued the formula down column C that would do it, but I thought this happened without me doing that.

Any ideas?

Thanks,
\Dave

 

[jim may]

I think the selection of this might be (in xl2007) under The Office Button Excel Options..
Advanced Tab; Editing Options; Look for Extend Data Range Formats and Formulas.

 

[nhvideoguy]

I think the selection of this might be (in xl2007) under The Office Button Excel Options..
Advanced Tab; Editing Options; Look for Extend Data Range Formats and Formulas.

Yes, this sound like it based on this description:
Extend data formats and formulas When you add new rows of data to the end of a data range, Excel extends consistent formatting and formulas. Three of the five preceding cells must use the same format for a format to be extended. All of the preceding formulas must be consistent for a formula to be extended.
It is checked off in my options and it seems all my preceding formulas are consistent but it's not extending it... When they say "data range" does that imply something special or just a columns of numbers?


Hummm...

I would post an example if I knew how... Is linking to a file the only way?

 

[jim may]

sorry, not sure...